PHILIPS AUDIO service bulletins and tips

SYMPTOM:Replacement of CDM12.1 for 7-Disc Changer

CURE:Production of CDM12.1 will stop. For service purpose CDM12.1 (4822 691 30278) will be replaced by service kit VAM1201 (4822 310 11263) when stock depletes. As an alternative, the CDM12.1 can be replaced by CDM12.1/T (4822 691 30343) without any further modifications.

SYMPTOM:Replacement of CDM12.1 for 7-Disc Changer

CURE:Replacement of CDM12.1 for 7-Disc Changer - Production of CDM12.1 will stop. For service purpose CDM12.1 (4822 691 30278) will be replaced by service kit VAM1201 (4822 310 11263) when stock depletes. For the above mentioned sets with 7-Disc Changer the new VAM1201 does not fit. As an alternative, the CDM12.1 can be replaced by CDM12.1/T (4822 691 30343) without any further modifications.

SYMPTOM:Modification

CURE:Modification During production the spring pos. 70 has been modified from 16mm length to 14mm to match a similar change in the bracket pos. 2. This makes matching between the bracket and spring necessary during repair.For this reason a new service 12NC for pos 70 is created for the new spring.Below shows both spring (pos. 70) and their ordering 12NCs. Service codesDescription ============== =========== 4822 492 42713 Spring 16mm 4822 492 11413 Spring 14mm

SYMPTOM:Codenumber information

CURE:Codenumber information From now on Dolby testcassette MTT-150 is available with service codenumber 4822 397 30271. Also the Dolby testcassette TCC-130 has become a service ordernumber 4822 397 30269. With one of these cassettes the Dolby adjustment can be achieved.

SYMPTOM:improve the CD start-up behaviour

CURE:In order to improve the CD start-up behaviour, following parts have been changed: • Capacitor 2815 deleted • Capacitor 2823, 47pF (4822 122 33761) added • Resistor 3830 changed to 1k (4822 051 30102) REMARKS : Modification is implemented from production start onwards.

SYMPTOM:improve the CD start-up behaviour

CURE:In order to improve the CD start-up behaviour, following parts have been changed: • Capacitor 2815 deleted • Capacitor 2823, 47pF (4822 122 33761) added • Resistor 3830 changed to 1k (4822 051 30102) REMARKS : Modification is implemented from production start onwards.

SYMPTOM:improve the CD start-up behaviour

CURE:In order to improve the CD start-up behaviour, following parts have been changed: • Capacitor 2815 deleted • Capacitor 2823, 47pF (4822 122 33761) added • Resistor 3830 changed to 1k (4822 051 30102) REMARKS : Modification is implemented from production start onwards.

SYMPTOM:ADDITIONAL INFORMATION TO SERVICE INFORMATION

CURE:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-550 - 4822 303 14019Aerial 4822 443 10344Battery Cover 4822 101 11476Volume Control 4822 267 31921Earphone Jack 4822 240 10145Speaker 2.25 8 ohm

SYMPTOM:ADDITIONAL INFORMATION TO SERVICE INFORMATION

CURE:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-550 - 4822 303 14021Aerial 4822 443 10345Battery Cover 4822 101 21248Volume Control 4822 267 31921Earphone Jack 4822 240 10146Speaker 2.25 4 ohm

SYMPTOM:Modification

CURE:Modification From week 9715 onwards, a new rotatable telescopic aerial is used. The two different aerials are not inter-changeable. Codenumbers: 4822 303 14018Aerial (not rotatable) 4822 303 14057Aerial (rotatable)

SYMPTOM:Only hum from speaker.

CURE:Receiver IC TEA5591A defective. (4822 209 60565)

SYMPTOM:The radio produces a very weak sound.

CURE:Check capacitor 2024.

SYMPTOM:ADDITIONAL INFORMATION TO SERVICE INFORMATION

CURE:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-550 - 4822 303 14018Aerial 4822 443 10326Battery Cover 4822 101 11458Volume Control 4822 146 10505Transformer 120V 4822 146 10504Transformer 230V 4822 146 10515Transformer 120/230V 4822 498 10586Handle 4822 240 10142Speaker R102 4 ohm 4822 276 13763Push Switch (POWER) 4822 267 31468Earphone Jack 4822 209 62192IC TA7368P 4822 267 30738Mains Socket (VDE) 4822 265 20706Mains Socket (UL) 4822 277 21794Voltage Selector

SYMPTOM:Modification

CURE:Modification From week 9715 onwards, a new rotatable telescopic aerial is used. The two different aerials are not inter-changeable. Codenumbers: 4822 303 14018Aerial (not rotatable) 4822 303 14057Aerial (rotatable)

SYMPTOM:ADDITIONAL INFORMATION TO SERVICE INFORMATION

CURE:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-550 - 4822 303 14018Aerial 4822 443 10326Battery Cover 4822 101 11458Volume Control 4822 146 10505Transformer 120V 4822 146 10504Transformer 230V 4822 146 10515Transformer 120/230V 4822 498 10586Handle 4822 240 10142Speaker R102 4 ohm 4822 276 13763Push Switch (POWER) 4822 267 31468Earphone Jack 4822 209 62192IC TA7368P 4822 267 30738Mains Socket (VDE) 4822 265 20706Mains Socket (UL) 4822 277 21794Voltage Selector

SYMPTOM:Modification

CURE:Modification From week 9715 onwards, a new rotatable telescopic aerial is used. The two different aerials are not inter-changeable. Codenumbers: 4822 303 14018Aerial (not rotatable) 4822 303 14057Aerial (rotatable)

SYMPTOM:A selected preset frequency is replaced by another frequency.

CURE:In case presets are used to change stations, the frequency of the last preset station may be lost, when waking up by Radio, . Temporarily an addendum sheet is packed by with the following content: Protecting preset stations when using the alarm RADIO mode. Your selected stored frequencies (presets) may be lost as a result of using the alarm RADIO mode.In order to safeguard your selected presets, please follow the 3 steps below : 1. Set the desired alarm time. 2. Press the POWER ON/OFF button twice. 3. Now set the alarm switch to RADIO mode. REMARKS : An Addendum sheet is added in the Instruction for Use of sets produced from week 9606 onwards. From April 1996 onwards, an updated Microprocessor IC will be mounted. This updated Microprocessor will safeguard the last preset frequency.

SYMPTOM:Display dim or no segments displayed

CURE:Check/replace C1 (22nF) and C4 (100nF).

SYMPTOM:The set is inoperative.Only the clock is displayed.

CURE:The set does not react on operating commands because the microprocessor gets in a hang-up situation. After pressing the reset button in the battery compartment, the set is functioning well again. Customer may not be aware that there is a reset switch inside the battery compartment. REMARKS : From week 9545 onwards, a label is added in the battery compartment to provide good eye-catching effect which was not given by the engraved RESET indication.

SYMPTOM:Memory presets lost after some time

CURE:When the batteries are almost empty, presets and time info get lost.

SYMPTOM:Additional information to Newsletter 96.02.01

CURE:Additional information to Newsletter 96.02.01: Sets produced with new uP are marked KZ0296xx onwards.

SYMPTOM:No reception at all.

CURE:IC TEA5713 defective.

SYMPTOM:Dial drum broken.

CURE:Replace the dial drum by a modified one (4822 528 90871) REMARKS : The modified dial drum has been built-in from productionweek 9318 onwards. The productioncode of sets with modified dial drum starts with KT0393.

SYMPTOM:Batteries run out quickly.

CURE:Remove R17 and connect a 1 kOhm resistor from the base of Q7 to the negative (-) of C43. REMARKS : Modification had been implemented in production from week 9745 onwards.

SYMPTOM:No audio from radio

CURE:Pin 28 of IC1 is 0.7 V in stead of 1.4 V. Check/replace IC1.

SYMPTOM:IC1 is defective.

CURE:IC1 is probably damaged by wrong polarity while using the AC/DC adaptor.IC1 CXA1019S is available via service code 4822 209 15034. Following text is added into IFU (via addendum) as a temporary solution. You can connect the set to the mains using a mains adaptor - Make sure that the local voltage corresponds to the voltage of the 3V adaptor. Important! - The 2.1 mm centre pin of the 5.5 mm adaptor plug must be set to minus pole, as indicated under the 3V DC IN socket. - Connect the mains adaptor to the 3V DC socket of the set and plug the mains adaptor into a wall socket.The battery supply will now be disconnected. - Always disconnect the mains adaptor if you are not using it. Note: Remove the batteries if you intend to operate the set permanently on the mains supply. For long term, protection circuitry will be added to prevent IC1 damage caused by wrong polarity supply. REMARKS : Addendum had been added for sets produced from week9634 onwards.

SYMPTOM:No sound from the radio.

CURE:Check soldering around C45.

SYMPTOM:Service manual, partslist

CURE:Service manual, partslist - The service codenumber for the volumepotentiometer item 3206, 3207 is 4822 102 10439

SYMPTOM:Set will come in a hang-up situation.

CURE:If the set is operated continuously, the batteries become so drain that the CPU logic states become indeterminate. The set will come in a hang-up position and remains this position even if fresh batteries are replaced. To reset the hang-up the empty batteries have to be removed, briefly press the RESET button (20) in the battery compartment and insert fresh alkaline batteries. After that, readjust the timer setting and the preset radio stations. To prevent that the radio is switched on accidently, use the LOCK-position when packing the radio or putting it away. REMARKS: In sets produced after week 9336, in Instructions For Use an addendum will be added. This publication will be followed by a service information A93-575

SYMPTOM:No sound at all.

CURE:Check whether wire from ferrite aerial is short-circuited on PCB.

SYMPTOM:The radio part does not switch off.

CURE:Check transistor 7032 (RN1410; 4822 130 63139).

SYMPTOM:Removing the empty ALKALINE batteries is very difficult.

CURE:Cut a 30 to 40 degrees chamfer at the edge of the hole (near 9/10 kHz switch) of the chassis bracket. REMARKS : Production will be corrected from 9332 onwards. This publication will be followed by a Service Information.

SYMPTOM:Directions for use

CURE:Directions for use For commercial reasons a new Direction For Use booklet (DFU) has been issued. Service codes for the new DFU are: 4822 736 21829 for /00, /18 4822 736 21831 for /17

SYMPTOM:Addition to electrical partslist

CURE:Addition to electrical partslist AC/DC Adaptor The rating specification for the AC/DC adaptor is: Output : DC 6V / 350 mA Plug : Positive centre pin (diameter 1.5mm) The following AC/DC adaptor types are available and fulfilled the specification. SBC6608/00 4822 272 10291 (for /00 and /18) SBC6608/17 4822 272 10293 (for /17) REMARKS: This publication will be followed by service information A93-575

SYMPTOM:FM sensitivity is too low.

CURE:FM IF is shifted because it might occur that is not properly aligned in production: In some cases the input signal for IF alignemnt was too strong. Re-align FM IF following the procedure in the Service Manual. Use weak input signal to avoid mis-alignment. REMARKS : From week 9546 onwards, alignment procedure at production is strictly controlled by using weak input signal.

SYMPTOM:Very poor FM reception.

CURE:Check/replace chip capacitor C11.

SYMPTOM:Speaker inoperative. Left channel head- phone inoperative.

CURE:Check soldering of capacitor C48.

SYMPTOM:Sometimes no sound from loudspeaker. Headphone output is OK.

CURE:Check C48.

SYMPTOM:The right hand channel produces almost no sound.

CURE:Check soldering of the volume potmeter

SYMPTOM:Maximum volume level is too low

CURE:Check soldering of R34

SYMPTOM:The radio does not receive any station.

CURE:The blue wire of the ferrite coil is partly not isolated and makes short circuit with the copper pattern tracks.

SYMPTOM:Disturbs

CURE:Occurs if battery voltage is lower then 0,8V Replace batteries

SYMPTOM:The display switches to radio when switching on, but no sound.

CURE:Check/replace Q41.

SYMPTOM:The radio does not switch off the sound off after switching off.

CURE:Check/replace Q41.

SYMPTOM:Spare part information

CURE:Spare part information The telescopic aerial (4822 303 30365) is no longer available, because the supplier can not deliver.This aerial can be replaced by 4822 526 10618. Although both initial length and extended length of 4822 526 10618 are shorter than 4822 303 30365 it can be mounted in AE3805 and functions well.

SYMPTOM:Service Manual

CURE:Service Manual Rear cabinet item 28 has servicecodenumber 4822 421 20051

SYMPTOM:Partslist

CURE:Partslist - The service codenumber for IC101 should read 4822 209 62924

SYMPTOM:Volume up/down does not work correct. Sometimes power switches off.

CURE:The AE3905 has an automatic LOW POWER SHUT OFF circuit. For values see Service Manual AE3905 page 21, 22. If this phenomenon occurs with batteries only - maybe that there is a high voltage drop (about 0,5 - 0,7V) at the battery springs due to oxidation. In this case clean the contacts with an emery paper or a contact file (or exchange it). If this phenomenon occurs with external supply only - check if the supply delivers at least 3V under load. The voltage drop at diode 6283 has to be less or equal than 0,3V (Schottky diode).

SYMPTOM:Weak sensitivity of World time rotary switch

CURE:New contact plate 4822 290 81622 REMARKS : In order to obtain better contact result of the World Time Rotary switch, from week 9321 onwards a new Contact Plate is used in production. Service code for the new contact plate reads 4822 290 81622.

SYMPTOM:Radio part inoperative.

CURE:Check soldering of volume potmeter R3107.

SYMPTOM:Clock is two minutes slow every day.

CURE:Check Xtal 5404 (4822 242 81016).

SYMPTOM:ADDITIONAL INFORMATION TO SERVICE INFORMATION

CURE:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-550 - 4822 443 10319Battery Cover 4822 101 11457Volume Control 4822 267 31862Headphone Jack 4822 242 10423Headphone AY3655 w/winder

SYMPTOM:ADDITIONAL INFORMATION TO SERVICE INFORMATION

CURE:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-550 - 4822 443 10321Battery Cover 4822 101 11457Volume Control 4822 267 31862Headphone Jack 4822 240 10141Speaker 40mm 7 ohm 4822 242 10423Headphone AY3655 w/winder

SYMPTOM:ADDITIONAL INFORMATION TO SERVICE INFORMATION

CURE:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-550 - 4822 423 41275Battery Cover 4822 102 10472Volume control 4822 466 10677Zebra connector 4822 410 10534Rubber Keypad 4822 267 31863Headphone Jack 4822 135 00051LCD Display 4822 242 10423Headphone AY3655 w/window

SYMPTOM:No battery contact for some battery types only.

CURE:The ribs for fixing the battery contact wire are too close together for batteries with large plus-pole diameter. For such battery types the plus-pole of the upper battery will not contact the wire properly. Service solution: Cut the inner ribs with a knife REMARKS : Modified Cabinets are used in production from week 9947 onwards.

SYMPTOM:No battery contact for some battery types only.

CURE:The ribs for fixing the battery contact wire are too close together for batteries with large plus-pole diameter. For such battery types the plus-pole of the upper battery will not contact the wire properly. Service solution: Cut the inner ribs with a knife REMARKS : Modified Cabinets are used in production from week 9947 onwards.

SYMPTOM:Leakage of LED display segment.

CURE:Change resistor 3004 (connected to pin 25 of IC LM8560) from 220k to 560k (4822 116 52292). REMARKS : Modification introduced in production from week 9523 onwards.

SYMPTOM:Modification

CURE:Modification Due to shortage of IC CXA1019 in production, the radio board has been changed. In the new radio board, IC TEA5713 (4822 209 31065) has been used. REMARKS : Date of introduction (with factory change code KT02..) : AJ3040/17, AJ3240/17 from week 9520 onwards. AJ3040/00 from week 9527 onwards.

SYMPTOM:The fuse is blown out.

CURE:The fuse will blow if the CLOCK switch is set to ALARM and the SLUMBER button is pressed. The problem can be soved by replacing jumper 9022 by a 1k resistor (4822 050 11002). REMARKS : Modification has been implemented in production from week 9910 onwards.

SYMPTOM:ADDITIONAL INFORMATION TO SERVICE INFORMATION

CURE:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-550 - 4822 423 41163Battery Cover 4822 101 21256Volume Control 4822 146 10451Transformer 120V 4822 146 10452Transformer 120V White 4822 146 10448Transformer 230V 4822 146 31456Transformer 120/230V 4822 146 10514Transformer 240V BS 4822 146 10679Transformer 240V SAA White 4822 410 10398Knob-Clock Function 4822 410 10417Knob-Clock Function White 4822 209 32851IC LM8562 4822 130 90817Display LTC637D1G 4822 276 13577Tact Switch 4822 240 10118Speaker 2.5 8 ohm 4822 272 10225Voltage Selector

SYMPTOM:Leakage of LED display segment.

CURE:Change resistor 3004 (connected to pin 25 of IC LM8560) from 220k to 560k (4822 116 52292). REMARKS : Modification introduced in production from week 9523 onwards.

SYMPTOM:Clock runs too fast or too slow.

CURE:Symptom occurs only in AJ3150/11 which runs on Quartz reference. Erroneously the optional solder-bridge on the clock Printed Circuit Board has been short circuited instead of being open. This results in a deviation of the time adjustment, because the mains frequency is now injected into the clock IC as well and affects the Quartz reference frequency. Solution : Open solder bridge. To do so remove the top cabinet, turn over the Clock Printed Circuit Board and remove the solder bridge between 3004 and 6003 (near printing 051 17734) by soldering iron. REMARKS : Modification is implemented in production from week 9535 onwards with factory change code KT02. The position of the solder bridge is also shown on the figure in newsletter 62.

SYMPTOM:Modification

CURE:Modification Due to shortage of IC CXA1019 in production, the radio board has been changed. In the new radio board, IC TEA5713 (4822 209 31065) has been used. REMARKS : Date of introduction (with factory change code KT02..) : AJ3040/17, AJ3240/17 from week 9520 onwards. AJ3040/00 from week 9527 onwards.

SYMPTOM:The volume of the audio signal is too low.

CURE:Replace capacitor C2123.

SYMPTOM:Replacement information

CURE:Replacement information - Because the dual alarm clock IC TMS3459B (4822 209 50572) is no longer available, another IC LM8562 (4822 209 32851) is suggested to substitute. LM8562 is pin to pin compatible to TMS3459B except that one resistor for CR/OSC input port (pin 16) has to be changed. In series a resistor (R1) of 100kOhm and a potentiometer (R2) of 50kOhm has to be connected between this pin and earth. REMARKS : R2 should be adjusted to obtain an oscillating frequency of 2.4 kHz +5/-15Hz, measured on pin 16 of IC LM8562 when no AC power is supplied. This publication will be followed by a service information.

SYMPTOM:Replacement information

CURE:Replacement information - Because the dual alarm clock IC TMS3459B (4822 209 50572) is no longer available, another IC LM8562 (4822 209 32851) is suggested to substitute. LM8562 is pin to pin compatible to TMS3459B except that one resistor for CR/OSC input port (pin 16) has to be changed. In series a resistor (R1) of 100kOhm and a potentiometer (R2) of 50kOhm has to be connected between this pin and earth. REMARKS : R2 should be adjusted to obtain an oscillating frequency of 2.4 kHz +5/-15Hz, measured on pin 16 of IC LM8562 when no AC power is supplied. This publication will be followed by a service information.

SYMPTOM:The Clock set button can get stuck inside

CURE:The Clock set button can get stuck inside when too much force is applied on the button. A rib will be added on the top cabinet as stopper. REMARKS : Modification will be implemented in production from week 9948 onwards.

SYMPTOM:Alarm 1 sometimes inoperative.

CURE:Check soldering of switch S1012.

SYMPTOM:Several display segments defect.

CURE:Check supply diode 6003

SYMPTOM:The sound level is very low.

CURE:Check/replace capacitor C2014 near the endstage IC

SYMPTOM:Set does not operate on 9V back up battery.

CURE:Mains supply must be connected for timer and radio function.

SYMPTOM:Correction Instruction For Use

CURE:Correction Instruction For Use The Alarm 2 does not function on Radio preset 1. An addendum sheet with the following message is added to notify customers: In the radio wake-up alarm mode, the PRESET 1 station operates on ALARM 1 only and not ALARM 2.

SYMPTOM:Alarm 2 does not function on radio preset 1

CURE:In the radio wake-up alarm mode, the preset 1 station operates on alarm 1 only and not alarm 2. Microprocessor IC with modified software will be implemented in production from week 9748 onwards.

SYMPTOM:Correction Instruction For Use

CURE:Correction Instruction For Use The Alarm 2 does not function on Radio preset 1. An addendum sheet with the following message is added to notify customers: In the radio wake-up alarm mode, the PRESET 1 station operates on ALARM 1 only and not ALARM 2.

SYMPTOM:Change diode 7409

CURE:Change diode 7409 - To prevent the damaging of the diode 7409 during the charging up of cap. 2113 (1,000µF), diode 7409 has been changed from 1N4148 into 1N4001 (4822 130 31438).

SYMPTOM:Change diode 7409

CURE:Change diode 7409 - To prevent the damaging of the diode 7409 during the charging up of cap. 2113 (1,000µF), diode 7409 has been changed from 1N4148 into 1N4001 (4822 130 31438).

SYMPTOM:No sound from radio or cassette part.

CURE:Check soldewring around C34.

SYMPTOM:The tape deck speed is sometimes too low

CURE:Check/replace the speed control potmeter

SYMPTOM:Replacement tip

CURE:Replacement tip - If clock IC TMS3459BNL is not available, it is suggested to replace it by LM8562B (4822 209 32851); also change the value of the following parts : R122 (pin 16 to ground) to be changed to 180k C109 (pin 15 to pin 16) to be changed to 0.0033uF

SYMPTOM:No reaction on some buttons.

CURE:Check cable between CN1845 and CN1846 (wire 9). Cable replaced.

SYMPTOM:Noise is audible in stand-by mode.

CURE:The noise level can be reduced by following modification: 1. Change 3214 and 3216 from 10 kOhm to 1 kOhm (4822 050 21002) 2. Change 2209 and 2212 from 1 uF to 10 uF (4822 124 40248) 3. Relocate 3217.Solder it to the - pole of 2214 and the ground pin of 3215. REMARKS : Modifications will be implemented in production from week 9818 onwards.

SYMPTOM:Noise is audible in stand-by mode.

CURE:Additional to newsletter issue PA98.01.01: In order to improve the distortion at maximum volume, capacitors 2210 and 2213 should be changed to 4.7nF (4822 126 11714).

SYMPTOM:The CD part gives ER, does not find the focus point.

CURE:Check cable at CN1801 for interruption.

SYMPTOM:CD player gives error, does not find focus.

CURE:Pin 5 of IC7801 bad soldered. Pin 5 resoldered.

SYMPTOM:After some time the CD player is inoperative.

CURE:Replace IC7842 (4822 209 32852)

SYMPTOM:Service Information

CURE:Service Information - The output pins LED and BIAS of item 8110 are not used. From week 9621 onwards, a 4-pins socket is used in the position of 8110. Consequently resistors 3103 and 3105 are also deleted.

SYMPTOM:Modification

CURE:Modification Item 2309 is changed from 1000uF/10V to 1000uF/16V (4822 124 40201) to safeguard enough safety margin. REMARKS : Modification is implemented in production from week 9620 onwards.

SYMPTOM:Noise is audible in stand-by mode.

CURE:The noise level can be reduced by following modification: 1. Change 3214 and 3216 from 10 kOhm to 1 kOhm (4822 050 21002) 2. Change 2209 and 2212 from 1 uF to 10 uF (4822 124 40248) 3. Relocate 3217.Solder it to the - pole of 2214 and the ground pin of 3215. REMARKS : Modifications will be implemented in production from week 9818 onwards.

SYMPTOM:Noise is audible in stand-by mode.

CURE:Additional to newsletter issue PA98.01.01: In order to improve the distortion at maximum volume, capacitors 2210 and 2213 should be changed to 4.7nF (4822 126 11714).

SYMPTOM:Modification

CURE:Modification From May 1998 onwards, new CD boards 'CD97 MK2' and CDM 'CD94V5' are used.A new Service Manual 4822 725 26193 is published for the new generation. REMARKS : The production code of the new generation is 'KT02'.

SYMPTOM:Modification

CURE:Modification To improve distortion and amplification range, the following parts are changed from production start onwards C2210 and C2213 are changed to 4.7nF (4822 126 11714) R3201 and R3204 are changed to 6.8kOhm (4822 116 83961) R3202 and R3205 are changed to 27kOhm(4822 116 52264) R3221 and R3222 are changed to 18kOhm(4822 116 52251) REMARKS : Changes are applied on sets of new generation with production code KT-02 only.

SYMPTOM:After some time sound too weak.

CURE:Check/replace IC 7400.(TMP47C600RF)

SYMPTOM:No CD function.

CURE:To improve the oscillating function of the CD CPU: Change 2402 from 100pF into 15pF. Change 3405 from 10k into 0R (jumper). Add resistor (item 3420) of 330k parallel to item 2403. REMARKS : This modification is implemented in production.

SYMPTOM:Tuning hum noise is audible when 7400 is replaced.

CURE:4822 209 32849 is the microprocessor IC (7400) with latest software. When it is used to replace the IC of old version, the following 2 parts should be added. 22534822 121 5138710nF/16V 20% 62514822 130 34173Zener diode 5.6V Please refer Service Information A93-584 (4822 725 24559) for the location of new componenets

SYMPTOM:The LED display is missing some segments.

CURE:This fault is caused by diodes item 6454, 6455 which are defective. Solution: Change 6454 and 6455 from 1N4148 into 1N4001 (4822 130 31438). Add 6444 (1N4001) in series with 6454, and 6445 (1N4001) in series with 6455. REMARKS : This modification is implemented in production.

SYMPTOM:DRAM noisy, playability of CD poor.

CURE:To reduce DRAM noise and to improve the playability of CD discs, replace jumper 9051 with resistor 10 Ohm (4822 050 21009). REMARKS : This modification is implemented in production.

SYMPTOM:Several segments of the time display are inoperative.

CURE:Diode 6455 is defect causing the wave on pin 2 (display) to be too low.

SYMPTOM:RCD1.2D DISC DRIVE - service hint to detect a bad

CURE:RCD1.2D DISC DRIVE - service hint to detect a bad disc drive SYMPTOM One of the following complaint descriptions: - no function, does not start - plays badly - skips tracks - very shock sensitive General observation by investigation: HF-signal too small (compared to value: 800 mVpp) CAUSE: Possible caused by mechanical x/y-fixation of the diode array on the optical pick-up unit has drifted. Attention: The laser control of the RCD1.2D disc drive is located on the optical pick-up unit. The laser current has been adjusted in the production line and isn o tintended to be varied for service purposes. If the HF-signal is detected considerably smaller than 800 mVpp, check first as follows: Play a disc. Turn the FOCUS OFFSET potmeter and observe the HF-signal: - If the HF-signal decreases in both directions, the x/y-adjustment of the diode array can be considered to be o.k. - If the HF-signal increases in one direction, adjust to max. HF and check the FOCUS OFFSET voltage: FOCUS OFFSET +/-100mV this means: x/y-adjustment of diode array has drifted and is out of tolerance. Conclusion: In this case the optical pick-up unit has to be exchanged by a new one (4822 691 30327). REMARKS : On the service information of concerning typenumber the drawing with the mechanical instruction how to exchange the optical pick-up unit has been shown. After replacement of the optical pick-up unit the mentioned electrical adjustments in the service manual have to be carried out. This publication will be followed by a service information of each model/typenumber.

SYMPTOM:Corrections Service Manual

CURE:Corrections Service Manual The service code for the I.F.U. should read: 4822 736 21868I.F.U. for AJ3930/17 4822 736 21869I.F.U. for AJ3930/00/01/04/05 and /06

SYMPTOM:Clock Alignment

CURE:Clock Alignment - The alignment procedure for Clock should be moved to page 9 (CS 58 937) and corrected as below. CLOCK ALIGNMENT __________________________________________________________________ | DC INPUT| ADJUST |O/P|FREQUENCY COUNTER| |_____________________|________|_______|_________________________| |Connect DC 9V at 9107|3454|[3]| Freq. = 2.4 kHz | |(MBB battery input)|| | +5/-15 Hz | |_____________________|________|_______|_________________________| REMARKS: This publication will be followed soonest by a service information

SYMPTOM:Transformer hum is audible.

CURE:The hum is caused by vibration of the metal transformer bracket (item 502). For service purpose the metal bracket can be removed without substitution. REMARKS : In production, a rubber foam of 20 x 25 x 26 mm will be placed between top of transformer and Top Cabinet (item 427). This will protect the printed board from being damaged during transit. The modification has been implemented in production from week 0014 onwards.

SYMPTOM:parts are changed to improve distortion at maximum volume

CURE:following parts are changed to improve distortion at maximum volume. • Resistors 3201 and 3204 changed to 820R (4822 117 11454) • Resistors 3221 and 3222 changed to 3.3k (4822 051 20332) REMARKS : Modification is implemented from production start onwards.

SYMPTOM:The transformer hum is audible.

CURE:Hum is caused by the vibration of shielding plate which is mounted on top of mains transformer. The shield plate is a construction of 3 metal layers which are sticked together by means of double-sided adhesive tape. If the layers are not pressed together properly, the shield plate will vibrate. To solve the problem, we suggest to dismantle the shield plate and hammer it against a solid surface. REMARKS : From production week 9905 onwards, a press jig has been used to ensure shield plates are well pressed.

SYMPTOM:Disc clamper on CD Door is loose out.

CURE:The dimension of the latch on the CD Door to lock the clamper is out of specification.Service solution is to add black glue on the latch. REMARKS : Mould of CD Door is modified and implemented in production from week 9838 onwards.

SYMPTOM:Additional information to Service Newsletter PA99.02

CURE:The transformer hum can be further reduced by adding 2 pieces of sponge (about 20x15x2mm) between transformer and shield plate. REMARKS : Modification has been implemented in production from week 9902 onwards.

SYMPTOM:Correction to IFU :

CURE:Correction to IFU : - To set WEEKEND SLEEPER, only following steps are necesary. 1. Select the alarm you wish to deactivate by pressing the ALM 1 or 2 button.Within 5 seconds the display shows the set alarm time. Briefly press the WEEKEND SLEEPER once. -> If the weekend sleeper is activated, zz will appear in the display for ALARM 1 or 2. 2. To cancel the weekend sleeper function, repeat step 1 until zz no longer appears in the display. REMARKS : Errata sheet will be inserted from week 9831 onwards. IFU will also be updated.

SYMPTOM:Correction to Electrical Partslist :

CURE:Correction to Electrical Partslist : The Service codenumber of the Voltage Selector for /01 version should read 4822 272 10366.

SYMPTOM:Poor tracking and groove jumping.

CURE:Where instances of poor tracking or groove jumping occur with the above record players it is recommended that the following points are checked. 1. Ensure the lead out wires from the pick-up arm pivot are not restricting the movement of the arm. 2. The pick-up arm support may be defective.Either replace this item or remove any excess flashing from the moulding as shown.

SYMPTOM:Spare part information

CURE:Spare part information Please mark that there are two production centres for the AK501 record player, being identified by AK501/20 and AK501/40 although the appearance/features are the same. The belt however has different dimensions: 4822 358 20355 is for AK501/40 4822 358 20372 is for AK501/20 Please check type/version before deciding which code should be used. REMARKS : This information is a correction of Newsletter 50.01. Codenumbers were wrong stated.

SYMPTOM:Set cannot be used as stand alone set.

CURE:Because of the hum problem when record player is used with Philips Midi Systems, the ground wire WCB20 inside the set has been deleted. This makes that the set can only operate together with Philips Midi System. REMARKS : From week 9512 onwards, a label will be stuck on the display box of AK540. Text, printed on the label: Remark: Recommended to use only with Philips Midi Hi-fi System : AS440, AS450, AS540, AS550, AS640, AS650.

SYMPTOM:Faulty play when in programme mode

CURE:It has been found in some cases that the start of an unwanted track is sometimes played during a programme of selected tracks. This particular fault occurs only with early production players and where the pause time between the tracks on a disc is less than two seconds. To overcome the problem microprocessor IC7840 should be replaced with a later software version type INS8050-11RTZ/N.The new IC is now supplied under the same code number as the earlier version 4822 209 62493.

SYMPTOM:Interrupting music

CURE:In case of interrupting music it is recommended to replace the bearing of the disc hold down. After replacement of the bearing (4822 466 92257) and the ball (4822 520 40177) should be greased with molycote PG65 (4822 390 20139)

SYMPTOM:Jumping on CD playback.

CURE:Replace part 122 on exploded view in service manual.The plastic strip wears due to the ball bearing.

SYMPTOM:Loading mechanism: changing item 132

CURE:Loading mechanism: changing item 132 Item 132 might move sidewards. Because of this, it can be clamped on the left side of the tray switch. To overcome this problem the switching part from item 132 has been improved. The modified part will be used from production week 9049 onwards. The service codenumber remains 4822 402 50281.

SYMPTOM:Manual, Partslist

CURE:Manual, Partslist - Please add the following items to the manual Item : Service codenumber : Description : 5850 4822 242 72565 Resonator 8.46 MHz 5851 4822 242 72565 Resonator 8.46 MHz

SYMPTOM:Service hint

CURE:Service hint When reading a disc, the display shows an ERROR message. The set is not able to read the T.O.C. and will not start to play. Hint : Verify the production period on the CDM Paper label : 9135 upto and including 9138 Inkjetmark : 9134.4A upto and including 9138.4A During this period wrong grease is used causing too high friction of the swing arm. In that case the CDM has to be replaced. From 9139 or 9138.4B onwards, this error is retrieved.

SYMPTOM:Loading mechanism called : loading 88,

CURE:Loading mechanism called : loading 88, - Frame (item 502) will be changed from week 9015 onwards. The new frame (4822 464 50822) is not compatible with the old one (4822 464 50715). Both frames are not interchangeable without a modification.As long as the old frame is available the old frame can be exchanged without a modification. If the old frame is no longer in stock, it has to be replaced by the new one and the motor (item 131) on the frame has to be replaced too. New frame : 4822 464 50822 + New motor : 4822 361 21408.

SYMPTOM:Service hint (Program mode)

CURE:Service hint (Program mode) - If a disc, of which the pause time between two tracks is < 2 seconds, is played-back via the program mode, the right track is not always played-back immediately. To prevent this problem IC7840 can be replaced by a µP with software version 3. The µP is than marked INS8050-11 RTZ and has service codenumber 4822 209 62493. The new µP has been built-in from week 9032 onwards. This µP has also been applied in set FW2012 too.

SYMPTOM:Changes

CURE:Changes - Some changes have been done in course of production : *To improve 100 Hz hum and noise when using RC5 2901 has been changed from 15nF to 6.8nF 3600 has been changed from 10 ohm to 560 ohm 3906 has been changed from 10k ohm to 6.8k ohm 3908 has been changed from 2.7k ohm to 10k ohm *To improve brightness of LCD 3701 has been changed from 1.5k ohm to 6.8k ohm 3702 has been changed from 820 ohm to 4.7k ohm 3709 has been changed from 1.5k ohm to 10k ohm 2700 has been changed from 220 a) *To improve the influence of radiation some coils have been added.

SYMPTOM:AK601 from PCB .7 onwards

CURE:AK601 from PCB .7 onwards (see Service Info A91-123). - 12NC for microprocessor (pos. 7840) should be read as 4822 209 31203.

SYMPTOM:Additional information to newsletter 21.06 CD

CURE:Additional information to newsletter 21.06 CD general, concerning transport keys (or transit screws). - In principle for all RCD disc drives (RCD1, RCD1.2, RCD2 and RCD3) and CDM mechanisms (CDM2, CDM4, CDM9, CDM12, CDM14) there is no additional protection necessary for transportation. The reason why in spite of it transit screws are used in some sets is that in these sets the tray mechanism has to be protected against shocks. Further it is very much dependent on the behaviour of the used packaging. It can be assumed that sets from the refurbishing departments will be distributed via mail in single packaging and than it will be recommended to use the transit screws in the sets where they were also used in the original status sent by the factory. Partslist, manual: CD LOADER sets Transit screw AK601, AK630, TK603, TK306, TK610, CD162, CD1644822 535 80855 CD600, CD610, CD620, CD630, CD820, CD830, CD8404822 535 80806 CDD882, CD85, CD8804822 417 20163 CD80 4822 417 20187 AK791, AK796, AK798, FCD585, TK719 4822 502 13144 AK701, AK703, AK729, AK730, CD1552, CDC250, CDC345,4822 402 61082 CDC550, CDC552, CDC790, CDC792, CDC972 4822 402 61082 FW2017 4822 500 10471 CD640, CD660, CD670, CD770 4822 402 61082

SYMPTOM:Loading mechanism : changing item 132

CURE:Loading mechanism : changing item 132 Item 132 might move sidewards. Because of this, it can be clamped on the left side of the tray switch. To overcome this problem the switching part from item 132 has been improved. The modified part will be used from production week 9049 onwards. The service codenumber remains 4822 402 50281.

SYMPTOM:Interrupting music

CURE:In case of interrupting music it is recommended to replace the bearing of the disc hold down. After replacement of the bearing (4822 466 92257) and the ball (4822 520 40177) should be greased with molycote PG65 (4822 390 20139)

SYMPTOM:Additional information to newsletter 21.06 CD g

CURE:Additional information to newsletter 21.06 CD general, concerning transport keys (or transit screws). - In principle for all RCD disc drives (RCD1, RCD1.2, RCD2 and RCD3) and CDM mechanisms (CDM2, CDM4, CDM9, CDM12, CDM14) there is no additional protection necessary for transportation. The reason why in spite of it transit screws are used in some sets is that in these sets the tray mechanism has to be protected against shocks. Further it is very much dependent on the behaviour of the used packaging. It can be assumed that sets from the refurbishing departments will be distributed via mail in single packaging and than it will be recommended to use the transit screws in the sets where they were also used in the original status sent by the factory. Partslist, manual: CD LOADER sets Transit screw AK601, AK630, TK603, TK306, TK610, CD162, CD1644822 535 80855 CD600, CD610, CD620, CD630, CD820, CD830, CD8404822 535 80806 CDD882, CD85, CD8804822 417 20163 CD80 4822 417 20187 AK791, AK796, AK798, FCD585, TK719 4822 502 13144 AK701, AK703, AK729, AK730, CD1552, CDC250, CDC345,4822 402 61082 CDC550, CDC552, CDC790, CDC792, CDC972 4822 402 61082 FW2017 4822 500 10471 CD640, CD660, CD670, CD770 4822 402 61082

SYMPTOM:Interrupting music

CURE:In case of interrupting music it is recommended to replace the bearing of the disc hold down. After replacement of the bearing (4822 466 92257) and the ball (4822 520 40177) should be greased with molycote PG65 (4822 390 20139)

SYMPTOM:Parts

CURE:Parts - The service codenumber for IC TMP47C400AF-6867 should read 4822 209 62993.

SYMPTOM:Part number corrections

CURE:Part number corrections - The part numbers of two items in the disc hold down assembly listed on page 25 in the service manual are transposed. The correct part numbers are: Item 412 402 61223 Item 414 528 70575

SYMPTOM:Service Manual

CURE:Service Manual In the service manual the code numbers of items 412 and 414 have been interchanged. The correct code numbers are : item 4124822 402 61223 item 4144822 528 70575

SYMPTOM:Service Manual

CURE:Service Manual In the Service Manual the codenumbers of items 412 and 414 have been interchanged. The correct numbers are: item 4124822 402 61223 item 4144822 528 70575

SYMPTOM:Parts

CURE:Parts - The service codenumber for IC TMP47C400AF-6867 should read 4822 209 62993.

SYMPTOM:Service Manual

CURE:Service Manual In the Service Manual the codenumbers of items 412 and 414 have been interchanged. The correct codes are: item 4124822 402 61223 item 4144822 528 70575

SYMPTOM:Parts

CURE:Parts - The service codenumber for IC TMP47C400AF-6867 should read 4822 209 62993.

SYMPTOM:No tray out function

CURE:Checked pins 47 and 48 of IC 7580 for switching signals, these were found to be OK. Fault was found to be caused by T7521 being open circuit.

SYMPTOM:No drive to the carousel motor.

CURE:Check/replace T7507 - BC327/40.Transistor uprated to a BC369.

SYMPTOM:Bad playability with scratched CDs (Drop-outs, skips tracks)

CURE:Customer complaint: Other sets are able to play the same disc without any problem. CAUSE: Complaint set fulfils the specification, but tracking balance adjustment is not optimized for scratched CDs. SOLUTION: A more accurate adjustment of the TRACKING BALANCE will improve the playability of the set. Philip van der Matten Apply at measuring point 4 and 5 a low pass RC-filter with a time constant of approx. 3.5 seconds. The measured DC-level on the oscilloscope follows the TE-signal delayed. Adjust with potentiometer 3806 the measured value on the oscilloscope to 0V DC +/- 5 mV. In more detail explained in service information A93-368. REMARKS : This publication will be followed by service information A93-368.

SYMPTOM:Poor loading function (CDs damaged)

CURE:Check the set-up at the customer's place. REMARKS : If the set is placed on an uneven surface or if pressure is applied from the underside of the set (e.g. placed on cables or other parts) the tray will not open/ close correctly: The CD is not centered above the turntable - the upcomming RCD-lift (item 439) will clamp the disc somewhere between table and magnet bracket (item507). After STOP/OPEN the CD might fall into the housing where a closing tray can damage it.

SYMPTOM:Tray motor (item 1004) overheated; Melted bottom around tray motor

CURE:CAUSE: Due to mechanical tolerances of the tray inner switch (item 1006), this switch is actuated too late. That is why the tray moves too far inside and causes a tension at the gear which lets the gear wheel (item 421) and the worm wheel (item 418) stuck together. Than the tray motor blocks and overheats. SOLUTION: Adjust gap between contacts of the inner tray switch and the middle contact. The distance should read 0.2 till 0.3 mm by bending contact spring of inner tray position. (In service information A93-368 this tray and adjust dimensions have been drawn.) Check each set brought in for repair on: Transistors 7520 till 7525 of motor bridge circuit and NFR resistor 3521 are OK. Gear wheel (item 421) and worm wheel (item 418) on mechanical damage. REMARKS : This publication will be followed by a service information A93-368.

SYMPTOM:Spindle toothwheel mounted on bottom plate broken.

CURE:replace bottom plate 4822 444 50697

SYMPTOM:Part number changes IC7580 and IC7815

CURE:Part number changes IC7580 and IC7815 - IC7580 The part number given in the service manual for microprocessor IC7580 (4822 209 62578) is incorrect.The correct part number is 4822 209 63798. IC7815 From production week 9041 microprocessor IC7815 was changed from µP8049 to INS8049/11QWG/N part number 4822 209 63799.The later type can be used as a replacement for the earlier version without any additional modifications.

SYMPTOM:Additional information to newsletter 21.06 CD

CURE:Additional information to newsletter 21.06 CD general, concerning transport keys (or transit screws). - In principle for all RCD disc drives (RCD1, RCD1.2, RCD2 and RCD3) and CDM mechanisms (CDM2, CDM4, CDM9, CDM12, CDM14) there is no additional protection necessary for transportation. The reason why in spite of it transit screws are used in some sets is that in these sets the tray mechanism has to be protected against shocks. Further it is very much dependent on the behaviour of the used packaging. It can be assumed that sets from the refurbishing departments will be distributed via mail in single packaging and than it will be recommended to use the transit screws in the sets where they were also used in the original status sent by the factory. Partslist, manual: CD LOADER sets Transit screw AK601, AK630, TK603, TK306, TK610, CD162, CD1644822 535 80855 CD600, CD610, CD620, CD630, CD820, CD830, CD8404822 535 80806 CDD882, CD85, CD8804822 417 20163 CD80 4822 417 20187 AK791, AK796, AK798, FCD585, TK719 4822 502 13144 AK701, AK703, AK729, AK730, CD1552, CDC250, CDC345,4822 402 61082 CDC550, CDC552, CDC790, CDC792, CDC972 4822 402 61082 FW2017 4822 500 10471 CD640, CD660, CD670, CD770 4822 402 61082

SYMPTOM:Bad playability with scratched CDs (Drop-outs, skips tracks)

CURE:Customer complaint: Other sets are able to play the same disc without any problem. CAUSE: Complaint set fulfils the specification, but tracking balance adjustment is not optimized for scratched CDs. SOLUTION: A more accurate adjustment of the TRACKING BALANCE will improve the playability of the set. Apply at measuring point 4 and 5 a low pass RC-filter with a time constant of approx. 3.5 seconds. The measured DC-level on the oscilloscope follows the TE-signal delayed. Adjust with potentiometer 3806 the measured value on the oscilloscope to 0V DC +/- 5 mV. In more detail explained in service information A93-368. REMARKS : This publication will be followed by service information A93-368.

SYMPTOM:Poor loading function (CDs damaged)

CURE:Check the set-up at the customer's place. REMARKS : If the set is placed on an uneven surface or if pressure is applied from the underside of the set (e.g. placed on cables or other parts) the tray will not open/ close correctly: The CD is not centered above the turntable - the upcomming RCD-lift (item 439) will clamp the disc somewhere between table and magnet bracket (item507). After STOP/OPEN the CD might fall into the housing where a closing tray can damage it.

SYMPTOM:Tray motor (item 1004) overheated; Melted bottom around tray motor

CURE:CAUSE: Due to mechanical tolerances of the tray inner switch (item 1006), this switch is actuated too late. That is why the tray moves too far inside and causes a tension at the gear which lets the gear wheel (item 421) and the worm wheel (item 418) stuck together. Than the tray motor blocks and overheats. SOLUTION: Adjust gap between contacts of the inner tray switch and the middle contact. The distance should read 0.2 till 0.3 mm by bending contact spring of inner tray position. (In service information A93-368 this tray and adjust dimensions have been drawn.) Check each set brought in for repair on: Transistors 7520 till 7525 of motor bridge circuit and NFR resistor 3521 are OK. Gear wheel (item 421) and worm wheel (item 418) on mechanical damage. REMARKS : This publication will be followed by a service information A93-368.

SYMPTOM:Additional information to newsletter 21.06 CD

CURE:Additional information to newsletter 21.06 CD general, concerning transport keys (or transit screws). - In principle for all RCD disc drives (RCD1, RCD1.2, RCD2 and RCD3) and CDM mechanisms (CDM2, CDM4, CDM9, CDM12, CDM14) there is no additional protection necessary for transportation. The reason why in spite of it transit screws are used in some sets is that in these sets the tray mechanism has to be protected against shocks. Further it is very much dependent on the behaviour of the used packaging. It can be assumed that sets from the refurbishing departments will be distributed via mail in single packaging and than it will be recommended to use the transit screws in the sets where they were also used in the original status sent by the factory. Partslist, manual: CD LOADER sets Transit screw AK601, AK630, TK603, TK306, TK610, CD162, CD1644822 535 80855 CD600, CD610, CD620, CD630, CD820, CD830, CD8404822 535 80806 CDD882, CD85, CD8804822 417 20163 CD80 4822 417 20187 AK791, AK796, AK798, FCD585, TK719 4822 502 13144 AK701, AK703, AK729, AK730, CD1552, CDC250, CDC345,4822 402 61082 CDC550, CDC552, CDC790, CDC792, CDC972 4822 402 61082 FW2017 4822 500 10471 CD640, CD660, CD670, CD770 4822 402 61082

SYMPTOM:Wrong adjustment procedure of the CD-mechanism in service manual.

CURE:Adjustment of tracking offset: The adjustment can't be carried out as described in the adjustment table (page 16). The offset voltage should be measured between pin3 and pin6 of connector 1802 and be adjusted to 0V DC (+/- 5mV). REMARKS : This publication will be followed by a service information.

SYMPTOM:Poor loading function (CDs damaged)

CURE:Check the set-up at the customer's place. REMARKS : If the set is placed on an uneven surface or if pressure is applied from the underside of the set (e.g. placed on cables or other parts) the tray will not open/ close correctly: The CD is not centered above the turntable - the upcomming RCD-lift (item 439) will clamp the disc somewhere between table and magnet bracket (item507). After STOP/OPEN the CD might fall into the housing where a closing tray can damage it.

SYMPTOM:Additional information to newsletter 21.06 CD

CURE:Additional information to newsletter 21.06 CD general, concerning transport keys (or transit screws). - In principle for all RCD disc drives (RCD1, RCD1.2, RCD2 and RCD3) and CDM mechanisms (CDM2, CDM4, CDM9, CDM12, CDM14) there is no additional protection necessary for transportation. The reason why in spite of it transit screws are used in some sets is that in these sets the tray mechanism has to be protected against shocks. Further it is very much dependent on the behaviour of the used packaging. It can be assumed that sets from the refurbishing departments will be distributed via mail in single packaging and than it will be recommended to use the transit screws in the sets where they were also used in the original status sent by the factory. Partslist, manual: CD LOADER sets Transit screw AK601, AK630, TK603, TK306, TK610, CD162, CD1644822 535 80855 CD600, CD610, CD620, CD630, CD820, CD830, CD8404822 535 80806 CDD882, CD85, CD8804822 417 20163 CD80 4822 417 20187 AK791, AK796, AK798, FCD585, TK719 4822 502 13144 AK701, AK703, AK729, AK730, CD1552, CDC250, CDC345,4822 402 61082 CDC550, CDC552, CDC790, CDC792, CDC972 4822 402 61082 FW2017 4822 500 10471 CD640, CD660, CD670, CD770 4822 402 61082

SYMPTOM:Mechanical partslist

CURE:Mechanical partslist Power-keys for AK729 resp. AK730 have different colors. The service code number, stated in the service manual, is only valid for AK729. Codenumber for the AK730 power-key has been added: Pos. 412 4822 410 60734 Power-key for AK729 (color gray) 4822 410 63165 Power-key for AK730 (color black)

SYMPTOM:Corrections to service manual

CURE:Corrections to service manual - 1. Component layout DISK BOARD (page 17-18): - Numbering of connectors 1812 and 1813 has been reversed (circuit diagram is OK) - Measuring point 6 is not pin 1 of connector 1812 but pin 2 (circuit diagram OK). 2. Adjustment of tracking offset: The adjustment can't be carried out as described in the adjustment table (page 16). The offset voltage should be measured between pin3 and pin6 of connector 1802 and be adjusted to OV DC (+/- 5mV.) REMARKS: This publication will be followed by a service information.

SYMPTOM:Skips tracks, cannot follow tracks.

CURE:Check C2820 in track regulator part.

SYMPTOM:Wrong adjustment procedure of the CD-mechanism in service manual.

CURE:Adjustment of tracking offset: The adjustment can't be carried out as described in the adjustment table (page 16). The offset voltage should be measured between pin3 and pin6 of connector 1802 and be adjusted to 0V DC (+/- 5mV). REMARKS : This publication will be followed by a service information.

SYMPTOM:Bad playability with scratched CDs (Drop-outs, skips tracks)

CURE:Customer complaint: Other sets are able to play the same disc without any problem. CAUSE: Complaint set fulfils the specification, but tracking balance adjustment is not optimized for scratched CDs. SOLUTION: A more accurate adjustment of the TRACKING BALANCE will improve the playability of the set. Apply at measuring point 4 and 5 a low pass RC-filter with a time constant of approx. 3.5 seconds. The measured DC-level on the oscilloscope follows the TE-signal delayed. Adjust with potentiometer 3806 the measured value on the oscilloscope to 0V DC +/- 5 mV. In more detail explained in service information A93-368. REMARKS : This publication will be followed by service information A93-368.

SYMPTOM:CD skips tracks after some minutes.

CURE:Check laser current. Readjust laser current.

SYMPTOM:Poor loading function (CDs damaged)

CURE:Check the set-up at the customer's place. REMARKS : If the set is placed on an uneven surface or if pressure is applied from the underside of the set (e.g. placed on cables or other parts) the tray will not open/ close correctly: The CD is not centered above the turntable - the upcomming RCD-lift (item 439) will clamp the disc somewhere between table and magnet bracket (item507). After STOP/OPEN the CD might fall into the housing where a closing tray can damage it.

SYMPTOM:Tray motor (item 1004) overheated; Melted bottom around tray motor

CURE:CAUSE: Due to mechanical tolerances of the tray inner switch (item 1006), this switch is actuated too late. That is why the tray moves too far inside and causes a tension at the gear which lets the gear wheel (item 421) and the worm wheel (item 418) stuck together. Than the tray motor blocks and overheats. SOLUTION: Adjust gap between contacts of the inner tray switch and the middle contact. The distance should read 0.2 till 0.3 mm by bending contact spring of inner tray position. (In service information A93-368 this tray and adjust dimensions have been drawn.) Check each set brought in for repair on: Transistors 7520 till 7525 of motor bridge circuit and NFR resistor 3521 are OK. Gear wheel (item 421) and worm wheel (item 418) on mechanical damage. REMARKS : This publication will be followed by a service information A93-368.

SYMPTOM:Additional information to newsletter 21.06 CD

CURE:Additional information to newsletter 21.06 CD general, concerning transport keys (or transit screws). - In principle for all RCD disc drives (RCD1, RCD1.2, RCD2 and RCD3) and CDM mechanisms (CDM2, CDM4, CDM9, CDM12, CDM14) there is no additional protection necessary for transportation. The reason why in spite of it transit screws are used in some sets is that in these sets the tray mechanism has to be protected against shocks. Further it is very much dependent on the behaviour of the used packaging. It can be assumed that sets from the refurbishing departments will be distributed via mail in single packaging and than it will be recommended to use the transit screws in the sets where they were also used in the original status sent by the factory. Partslist, manual: CD LOADER sets Transit screw AK601, AK630, TK603, TK306, TK610, CD162, CD1644822 535 80855 CD600, CD610, CD620, CD630, CD820, CD830, CD8404822 535 80806 CDD882, CD85, CD8804822 417 20163 CD80 4822 417 20187 AK791, AK796, AK798, FCD585, TK719 4822 502 13144 AK701, AK703, AK729, AK730, CD1552, CDC250, CDC345,4822 402 61082 CDC550, CDC552, CDC790, CDC792, CDC972 4822 402 61082 FW2017 4822 500 10471 CD640, CD660, CD670, CD770 4822 402 61082

SYMPTOM:Corrections to service manual

CURE:Corrections to service manual - 1. Component layout DISK BOARD (page 17-18): - Numbering of connectors 1812 and 1813 has been reversed (circuit diagram is OK) - Measuring point 6 is not pin 1 of connector 1812 but pin 2 (circuit diagram OK). 2. Adjustment of tracking offset: The adjustment can't be carried out as described in the adjustment table (page 16). The offset voltage should be measured between pin3 and pin6 of connector 1802 and be adjusted to OV DC (+/- 5mV.) REMARKS: This publication will be followed by a service information.

SYMPTOM:Mechanical partslist

CURE:Mechanical partslist Power-keys for AK729 resp. AK730 have different colors. The service code number, stated in the service manual, is only valid for AK729. Codenumber for the AK730 power-key has been added: Pos. 412 4822 410 60734 Power-key for AK729 (color gray) 4822 410 63165 Power-key for AK730 (color black)

SYMPTOM:Instability of radial drive amplifiers

CURE:In the above model it has been found that it is possible for the radial drive operational amplifiers in IC7843 to become unstable. The frequency of oscillation is approximately 1 kHz and in this condition a steady tone will be heard coming from the CD deck mechanism. The fault may be difficult to trace because it can exist when all relevant components are within tolerance. Referring to the circuit diagram, instability can occur when R3853 and R3854 are lower in value by approximately 500-600 ohms compared to R3850 and R3855.To overcome the problem select four resistors and allocate the two higher values to positions R3853/R3854 and the lower values to R3850/R3855.All resistors are 12 Kohms 5% types code number 4822 116 80664.

SYMPTOM:Does not play discs due to no radial drive.

CURE:Check service test program 6.The radial arm should move in and out.If the radial arm isn't moving, check +5VB line.If this voltage is at 3 volts, suspect R3802 - 4.7 Ohm.

SYMPTOM:Does not play CDs, unit tries to find focus; turntable motor runs.

CURE:Put set into service mode. If error 3 is shown, check radial error microprocessor. (item 7840)

SYMPTOM:Intermittent radial arm is forced to outer of CDM.

CURE:On checking around IC 7800(TDA808AT) it was found that FElag signal (pin 16) was incorrect. Replacing C2817 (470nf) cured the fault.

SYMPTOM:Service Manual, Partslist changermodule.

CURE:Service Manual, Partslist changermodule. To solve problems with broken cams on item 501 and 503 these parts once have been taken as a normal service sparepart. A limited number of them is available under the following codenumbers : item 5014822 443 63082 item 5034822 444 50653

SYMPTOM:Correction to laser current adjustment

CURE:Correction to laser current adjustment When resetting the laser current in the above model R3810 should be adjusted to give 50mV across R3800 and not R3501 as stated in the manual.

SYMPTOM:Additional information to newsletter 21.06 CD

CURE:Additional information to newsletter 21.06 CD general, concerning transport keys (or transit screws). - In principle for all RCD disc drives (RCD1, RCD1.2, RCD2 and RCD3) and CDM mechanisms (CDM2, CDM4, CDM9, CDM12, CDM14) there is no additional protection necessary for transportation. The reason why in spite of it transit screws are used in some sets is that in these sets the tray mechanism has to be protected against shocks. Further it is very much dependent on the behaviour of the used packaging. It can be assumed that sets from the refurbishing departments will be distributed via mail in single packaging and than it will be recommended to use the transit screws in the sets where they were also used in the original status sent by the factory. Partslist, manual: CD LOADER sets Transit screw AK601, AK630, TK603, TK306, TK610, CD162, CD1644822 535 80855 CD600, CD610, CD620, CD630, CD820, CD830, CD8404822 535 80806 CDD882, CD85, CD8804822 417 20163 CD80 4822 417 20187 AK791, AK796, AK798, FCD585, TK719 4822 502 13144 AK701, AK703, AK729, AK730, CD1552, CDC250, CDC345,4822 402 61082 CDC550, CDC552, CDC790, CDC792, CDC972 4822 402 61082 FW2017 4822 500 10471 CD640, CD660, CD670, CD770 4822 402 61082

SYMPTOM:Service Manual, Partslist changermodule.

CURE:Service Manual, Partslist changermodule. To solve problems with broken cams on item 501 and 503 these parts once have been taken as a normal service sparepart. A limited number of them is available under the following codenumbers: item 5014822 443 63082 item 5034822 444 50653

SYMPTOM:Additional information to newsletter 21.06 CD

CURE:Additional information to newsletter 21.06 CD general, concerning transport keys (or transit screws). - In principle for all RCD disc drives (RCD1, RCD1.2, RCD2 and RCD3) and CDM mechanisms (CDM2, CDM4, CDM9, CDM12, CDM14) there is no additional protection necessary for transportation. The reason why in spite of it transit screws are used in some sets is that in these sets the tray mechanism has to be protected against shocks. Further it is very much dependent on the behaviour of the used packaging. It can be assumed that sets from the refurbishing departments will be distributed via mail in single packaging and than it will be recommended to use the transit screws in the sets where they were also used in the original status sent by the factory. Partslist, manual: CD LOADER sets Transit screw AK601, AK630, TK603, TK306, TK610, CD162, CD1644822 535 80855 CD600, CD610, CD620, CD630, CD820, CD830, CD8404822 535 80806 CDD882, CD85, CD8804822 417 20163 CD80 4822 417 20187 AK791, AK796, AK798, FCD585, TK719 4822 502 13144 AK701, AK703, AK729, AK730, CD1552, CDC250, CDC345,4822 402 61082 CDC550, CDC552, CDC790, CDC792, CDC972 4822 402 61082 FW2017 4822 500 10471 CD640, CD660, CD670, CD770 4822 402 61082

SYMPTOM:Service Manual, Partslist changermodule.

CURE:Service Manual, Partslist changermodule. To solve problems with broken cams on item 501 and 503 these parts once have been taken as a normal service sparepart. A limited number of them is available under the following codenumbers: item 5014822 443 63082 item 5034822 444 50653

SYMPTOM:Additional information to newsletter 21.06 CD

CURE:Additional information to newsletter 21.06 CD general, concerning transport keys (or transit screws). - In principle for all RCD disc drives (RCD1, RCD1.2, RCD2 and RCD3) and CDM mechanisms (CDM2, CDM4, CDM9, CDM12, CDM14) there is no additional protection necessary for transportation. The reason why in spite of it transit screws are used in some sets is that in these sets the tray mechanism has to be protected against shocks. Further it is very much dependent on the behaviour of the used packaging. It can be assumed that sets from the refurbishing departments will be distributed via mail in single packaging and than it will be recommended to use the transit screws in the sets where they were also used in the original status sent by the factory. Partslist, manual: CD LOADER sets Transit screw AK601, AK630, TK603, TK306, TK610, CD162, CD1644822 535 80855 CD600, CD610, CD620, CD630, CD820, CD830, CD8404822 535 80806 CDD882, CD85, CD8804822 417 20163 CD80 4822 417 20187 AK791, AK796, AK798, FCD585, TK719 4822 502 13144 AK701, AK703, AK729, AK730, CD1552, CDC250, CDC345,4822 402 61082 CDC550, CDC552, CDC790, CDC792, CDC972 4822 402 61082 FW2017 4822 500 10471 CD640, CD660, CD670, CD770 4822 402 61082

SYMPTOM:Sometimes no sound from tape deck part.

CURE:Check REC/PB head connections.

SYMPTOM:Cass. part does not play, wind or rewind properly

CURE:Left reel stucks due to dirt on one wheel, remove dirt.

SYMPTOM:The tape deck part is totally inoperative.

CURE:Check whether the heat sink of IC201 is bent against J202 and J203. (short-circuit). Rebent the heat sink.

SYMPTOM:No FM reception.

CURE:Check the interconnection of the red wire to the tuner PCB.

SYMPTOM:Modification

CURE:Modification A new tape deck is used in production. The following service codenumbers have been changed: 4822 358 10233Main belt 4822 528 70849Pinch Roller Arm 4822 528 70695Pinch Roller 4822 403 70968Eject Slider REMARKS : Modification is implemented from August 97 (with factory code starting from KZ019734...) onwards.

SYMPTOM:The mains transformer is defective.

CURE:This fault is caused by the thermal fuse. Solution: New transformer has been implemented in production; The old transformer was marked NC-I1887TM The new transformer is markedNC-I1887TM1 (remark: '1' is added). The transformer is available via service code 4822 146 31476. REMARKS : This modification has been implemented in production from week 9550 onwards. This publication is a correction of newsletter 96.04.02 (Complete marked code has been offered instead of '1').

SYMPTOM:Set inoperative on battery supply.

CURE:The positive pole of the battery does not make contact with the battery spring (+ pole) in the battery compartment. Bending the spring towards the + pole of the battery is a practical solution. REMARKS : From week 9551 onwards, tooling of battery spring has been modified.

SYMPTOM:Hum from speaker in radio and play mode.

CURE:Check C26.

SYMPTOM:Poor recordings from Tuner (FM) on normal tape

CURE:(unstable output level). • Change R8 from 15k½ to 12k½ (4822 116 51254) • Change R14 from 2.2M½ to 1.5M½ (4822 050 21505) • Change R18 from 820½ to 390½ (4822 050 28201) • Change C11 from 0.22µF to 10µF (4822 124 40248) • Change C21 from 0.22µF to 1µF (4822 124 40746) REMARKS : Modification has been implemented in production from week 0010 onwards.

SYMPTOM:The recordings are distorted.

CURE:Check switch (rec/play) SW4

SYMPTOM:Modification

CURE:Modification A new tape deck is used in production. The following service codenumbers have been changed: 4822 358 10233Main belt 4822 528 70849Pinch Roller Arm 4822 528 70695Pinch Roller 4822 403 70968Eject Slider REMARKS : Modification is implemented from August 97 (with factory code starting from KZ019734...) onwards.

SYMPTOM:No audio signal after some time

CURE:Check/replace IC7101.

SYMPTOM:Codenumber information

CURE:Codenumber information The Mode Knob (for selecting TAPE-AM-FM) is available with service code 4822 411 62033.

SYMPTOM:Service information

CURE:Service information - As this set is a so-called category 1 product no service manual has been produced and the normal replace procedure might have been applied. In coarse of production and for logistic reasons the audio IC U420B (item 7301) has been changed into IC TA7368P (4822 209 62192). Also IC TEA5591 (item 7101) has been changed into TEA5713/N2 (4822 209 31065).The Printed Circuit Board has been re-designed and has been introduced to production from week 9515 onwards. REMARKS : Modified sets can be recognized by changed factory code: KT02 (serial number KT029515xxxxx).

SYMPTOM:Modification

CURE:Modification During production, motor EG-530AD-6F (4822 361 21779) has been used instead of motor MMI-6S6R on tape deck. To replace EG-530AD-6F by MMI-6S6R, no other parts change is required.

SYMPTOM:Motor Noise is too loud.

CURE:Add an electrolytic capacitor item 2780, with value 220uF/16V (4822 124 40196) across the connection terminals of the DC motor. REMARKS : This modification has been implemented in production from week 9450 onwards.

SYMPTOM:Tape deck reels produce a ticking sound.

CURE:The problem is caused by dirts on the pressure roller. This can be observed by checking the tape speed variation. By cleaning the tape path and pressure roller the complaint can be solved.

SYMPTOM:No recording mode. Play back O.K.

CURE:It might be that the record switch is not pushed because the record pin is loose.

SYMPTOM:No tape transport. The take-up reel does not turn.

CURE:Drive belt might be loose.

SYMPTOM:No AC power. The mainstransformer is defective.

CURE:Fault is caused by the next: One of the solder joints of the mains socket is found cracked due to a rib (of the bottom cabinet) underneath the socket. This rib is too high and causes stress on the Printed Circuit Board. Service solution: Cut away a bit of plastic (about 1mm) from the mentioned rib. Check solderjoints of mains socket. REMARKS: In production from week 9412 onwards the bottom cabinet will be modified.

SYMPTOM:Cassette door hinge broken.

CURE:The mould of the door will be strengthened along the hinge area by adding ribs and more plastic on the hinge area. REMARKS: Modified Cassette Door is used in production from week 9418 onwards.

SYMPTOM:No sound on left channel at radio

CURE:Check C27

SYMPTOM:Tuning is OK, but distorted sound with bass tone on radio

CURE:Check C16.

SYMPTOM:RR RECII deck tape transports have a Ticking noise in playback.

CURE:In some production batches it occurred that there is grease on the stop lever, item 69, mounted in deck A. This grease causes a movement of slide item 90. This slide snaps back after being moved a little and causes a ticking noise. This can be solved by removing the grease from stop lever item 69 of deck A.

SYMPTOM:RR RECII deck tape transports have a Ticking noise in playback.

CURE:In some production batches it occurred that there is grease on the stop lever, item 69, mounted in deck A. This grease causes a movement of slide item 90. This slide snaps back after being moved a little and causes a ticking noise. This can be solved by removing the grease from stop lever item 69 of deck A.

SYMPTOM:RR RECII deck tape transports have a Ticking noise in playback.

CURE:In some production batches it occurred that there is grease on the stop lever, item 69, mounted in deck A. This grease causes a movement of slide item 90. This slide snaps back after being moved a little and causes a ticking noise. This can be solved by removing the grease from stop lever item 69 of deck A.

SYMPTOM:RR RECII deck tape transports have a Ticking noise in playback.

CURE:In some production batches it occurred that there is grease on the stop lever, item 69, mounted in deck A. This grease causes a movement of slide item 90. This slide snaps back after being moved a little and causes a ticking noise. This can be solved by removing the grease from stop lever item 69 of deck A.

SYMPTOM:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-

CURE:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-550 - 4822 443 10279Battery Cover 4822 492 11097Cassette Door Spring 4822 443 10278cassette Door 4822 100 20868Volume Control 4822 450 10111Lens-Cassette 4822 458 10518Grille-speaker 4822 410 10456Knob-Voice Act. 4822 134 10031Knob-BNS 4822 277 11526Contact-Switch 4822 240 10151Speaker 36mm 8 ohm 4822 242 10366Mic KUB2823 4822 265 10504Phone Jack (Green) 4822 265 10505Mic Jack (Black) 4822 265 10506DC Jack 4822 276 13726Switch-Push 4P2T 4822 277 11527Switch-Slide 2P3T 4822 277 11528Switch-Slide 1P2T 4822 349 11012Counter 4822 358 10165Counter Belt 4822 691 10496Tape Deck 4822 249 10525R/P Head 4822 249 10524E. head 4822 361 10837DC Motor

SYMPTOM:Hum at maximum volume.

CURE:1. Change resistor 3029 from 390ohm to 1kOhm (4822 116 83863). 2. Change capacitor 2017 from 10uF to 1uF(4822 124 41398). 3. Twist the wires connecting the main board and the tone control board. REMARKS: Production will be corrected from week 9410.

SYMPTOM:Humming sound after recording.

CURE:Check capacitor C2070.

SYMPTOM:No record mode.

CURE:Check the wire of the erase head.

SYMPTOM:After a while the recorder produces a humming sound.

CURE:Check capacitor C2014 in endstage.

SYMPTOM:Totally inoperative.

CURE:Check mass track near battery spring.

SYMPTOM:When the set is switched ON, a piece of the tape is erased.

CURE:CAUSE: When play button is pressed, there is a pulse from IC going to the tape head. This caused a momentary erase of tape. SOLUTION: 1.Add resistor 5K6 (4822 116 52289) between pin 1 and 3 of IC AN7082K. 2.Add resistor 5K6 between pin 1 and 20 of IC AN7082K. 3.Add ceramic capacitor 4.7pF (4822 122 40362) between pin 1 of IC AN7082K and ground. 4.Change capacitor C9 for 47 µF to 2.2 µF (4822 124 41013). REMARKS : From week 9347 onwards this change has been implemented in production.

SYMPTOM:One channel no sound.

CURE:Check solder connections on IC U1 (AN7082K).

SYMPTOM:Sometimes tape speed variations or sometimes no tape drive at all.

CURE:Check soldering quality connection of motor wire.

SYMPTOM:Play knob does not lock.

CURE:Play bracket might be bended. Rebend the play bracket.

SYMPTOM:Motor does not turn.

CURE:Check IC U1.

SYMPTOM:Tape speed too fast. ( deviation >5%)

CURE:Check soldering quality of R14.

SYMPTOM:Volume control potentiometer

CURE:Volume control potentiometer The volume control potentiometer used in AQ6421 is as same as in AQ6529. Service code is 4822 105 11122.

SYMPTOM:Partslist

CURE:Partslist - Service code Headphone socket reads 4822 267 31639 and service code of the Play head reads 4822 249 30207.

SYMPTOM:No playback mode.

CURE:Check the solder connections of the IC (AG665).

SYMPTOM:One channel no sound.

CURE:Check PCB on bad solder joints. (e.g. pins 27 & 28 of the IC)

SYMPTOM:The autoreverse reverses before the end of the tape.

CURE:Check friction and auto-stop friction.

SYMPTOM:No tape transport.

CURE:Drive belt might be loose from motor pulley or from flywheel or the drive belt might be stuck between front and back cover.

SYMPTOM:Cassette lid does not close.

CURE:Cassette lid spring might be loose.

SYMPTOM:Totally inoperative.

CURE:Check whether the connection wire at the battery springs are loose or bad soldered.

SYMPTOM:One channel no sound.

CURE:Check PCB on bad solder joints.

SYMPTOM:Tape speed deviates between forward and reverse mode.

CURE:Change resistor 3500 from 270 Ohm into 330 Ohm.

SYMPTOM:Motor sound audible in audio signal.

CURE:Check motor (4822 361 21613)

SYMPTOM:No tape transport.

CURE:Drive belt might be loose from flywheel.

SYMPTOM:Cassette lid does not close.

CURE:Eject spring might be loose. Remount the cassette spring.

SYMPTOM:No tape transport.

CURE:Check whether the motor is running. If not check motor driver IC. (2200)

SYMPTOM:The hinge of the Cassette Door is broken.

CURE:The tooling has been modified to strengthen the hinges of the Cassette Door. From this set only a few spare parts are available. This modified cassette door is also on stock now. In case of broken hinge replace cassette door with new 4822 443 64329. REMARKS : The modified Cassette Door is used in production from week 9531 onwards.

SYMPTOM:One channel no sound.

CURE:This fault might be caused by the headphone socket: The headphone socket mounted slanted or cold-soldered. SOLUTION: Re-solder headphone socket. Mounting procedure in production has been modified to ensure that the socket is flat mounted on printed board panel. REMARKS: This modification has been implemented in production from week 9534 onwards.

SYMPTOM:Fast wind/or rewind button stuck

CURE:The spring near the common wheel became loose because the springholder has broken by extreme large force applied to the button.

SYMPTOM:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-

CURE:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-550 - 4822 443 10383Battery Cover 4822 492 11196Cassette Door Spring 4822 443 10384Cassette Door 4822 101 11459Volume Control 4822 443 10385Door Insert 4822 450 10165Lens-cassette 4822 401 11629Belt Clip 4822 410 10601Knob-DBB 4822 265 10506DC Jack 4822 267 31861Headphone Jack 4822 277 11579Switch-Slide DBB 4822 242 10441Headphone AY3660

SYMPTOM:The Belt Clip is broken.

CURE:The belt clip will be broken if it is not properly pressed into the mounting hole on the rear cabinet before turning to LOCK position. The Belt Clip is available via service codenumber 4822 401 11734. REMARKS : An addendum sheet with diagrams showing how to fix the Belt Clip was added to the set from week 9815 onwards. The belt Clip has also been modified (dimple added and letter PUSH engraved).

SYMPTOM:The Belt Clip is broken.

CURE:The belt clip will be broken if it is not properly pressed into the mounting hole on the rear cabinet before turning to its location.The Belt Clip is available via service code 4822 401 11734. REMARKS : An addendum sheet with diagrams shows how to fix the Belt Clip was added to the set from week 9815 onwards.The belt Clip was also modified with a dimple added and letter PUSH engraved.

SYMPTOM:Service information

CURE:Service information - As these sets are so-called category 1 products no service manuals have been produced and the normal replace procedure might have been applied. However for servicing the cassette deck of AQ6518, AQ6527 and AQ6528 the following parts are available now: 4822 528 70671 Pinch Roller Base F 4822 528 70672 Pinch Roller Base R 4822 528 70876 Pinch Roller 4822 535 93561 Pinch Roller Shaft 4822 358 31067 Drive Belt REMARKS : See also service information A95-550 (4822 725 25373) for other available spare parts.

SYMPTOM:Sound interrupts when moving headphone plug

CURE:Check solder joint mass contact headphone socket.

SYMPTOM:Sometimes no tape drive. Motor sometimes inoperative.

CURE:Check soldering quality of RCD motor wire on the PCB.

SYMPTOM:Cassette part inoperative. No tape transport.

CURE:Belt might be loose from motor-pully.

SYMPTOM:Totally inoperative.

CURE:Check DC switch in DC-socket.

SYMPTOM:Cassette lid does not close.

CURE:Cassette lid spring might be loose. Remount the spring.

SYMPTOM:Lid does not close properly.

CURE:Check springs of the lid.

SYMPTOM:Spare part information

CURE:Spare part information During production, two types of headphone socket were used. Because body dimension and the pins location of the sockets are different, correct parts must be ordered. 1. 4822 267 31595 : body is rectangular (5 x 7 mm) 2. 4822 267 31861 : body is square (6 x 6 mm)

SYMPTOM:Codenumber information

CURE:Codenumber information The IC BA3528FP is now available via service code 4822 209 13503. This IC can also be added to service information A96-550 (Spare part codenumbers for Service Category I products.)

SYMPTOM:No audio signal

CURE:Check for short circuit between leg 1 and leg 2 of IC2.

SYMPTOM:A crackle noise is audible during two music passages.

CURE:This crackle noise is probably caused by the static on the take-up reel. The solution is to stick a shield plate with double side tape on the PCB (no copper side) underneith the IC BA3519F and this shield plate should be shorted to ground (pin 22 of BA3519F) by means of a connecting wire. The service code for the shield plate is 4822 466 62518. REMARKS : The modification had been implemented in production from week 9410 onwards.

SYMPTOM:A crackle noise is audible when a non recorded tape is playing.

CURE:This crackle noise is probably caused by the static on the take-up reel. The solution is to stick a shield plate with double side tape on the PCB (no copper side) underneith the IC BA3519F and this shield plate should be shorted to ground (pin 22 of BA3519F) by means of a connecting wire. The service code for the shield plate is 4822 466 62518. REMARKS : The modification had been implemented in production from week 9410 onwards.

SYMPTOM:Service information

CURE:Service information - As these sets are so-called category 1 products no service manuals have been produced and the normal replace procedure might have been applied. However for servicing the cassette deck of AQ6518, AQ6527 and AQ6528 the following parts are available now: 4822 528 70671 Pinch Roller Base F 4822 528 70672 Pinch Roller Base R 4822 528 70876 Pinch Roller 4822 535 93561 Pinch Roller Shaft 4822 358 31067 Drive Belt REMARKS : See also service information A95-550 (4822 725 25373) for other available spare parts.

SYMPTOM:No sound at all.

CURE:Check mass contact headphone socket.

SYMPTOM:A crackle noise is audible during two music passages.

CURE:This crackle noise is probably caused by the static on the take-up reel. The solution is to stick a shield plate with double side tape on the PCB (no copper side) underneith the IC BA3519F and this shield plate should be shorted to ground (pin 22 of BA3519F) by means of a connecting wire. The service code for the shield plate is 4822 466 62518. REMARKS : The modification had been implemented in production from week 9410 onwards.

SYMPTOM:A crackle noise is audible when a non recorded tape is playing.

CURE:This crackle noise is probably caused by the static on the take-up reel. The solution is to stick a shield plate with double side tape on the PCB (no copper side) underneith the IC BA3519F and this shield plate should be shorted to ground (pin 22 of BA3519F) by means of a connecting wire. The service code for the shield plate is 4822 466 62518. REMARKS : The modification had been implemented in production from week 9410 onwards.

SYMPTOM:Does not function on batteries

CURE:Check connector j400.

SYMPTOM:No headphone output.

CURE:Check the headphone socket.

SYMPTOM:Cassette lid does not close.

CURE:Cassette spring might be loose. Remount cassette spring.

SYMPTOM:Ticking sound in play mode, sometimes no tape transport.

CURE:Check the tape transport motor.

SYMPTOM:Service information

CURE:Service information - As these sets are so-called category 1 products no service manuals have been produced and the normal replace procedure might have been applied. However for servicing the cassette deck of AQ6518, AQ6527 and AQ6528 the following parts are available now: 4822 528 70671 Pinch Roller Base F 4822 528 70672 Pinch Roller Base R 4822 528 70876 Pinch Roller 4822 535 93561 Pinch Roller Shaft 4822 358 31067 Drive Belt REMARKS : See also service information A95-550 (4822 725 25373) for other available spare parts.

SYMPTOM:Left channel no sound.

CURE:Ceck PCB for bad solder joints (e.g. C56).

SYMPTOM:One chanel interrupts when moving the headphone plug.

CURE:Check the headphone socket (4822 267 31631).

SYMPTOM:Sometimes volume cannot be changed, stays at a high volume.

CURE:Check the volume potentiometer VR1 (4822 105 11122).

SYMPTOM:Radio part inoperative.

CURE:Check IC101.

SYMPTOM:Batteries too fast empty, tape transport continuously activated

CURE:Check whether leaf-switch is loose and sticks between pcb and deck. Remount the leaf-switch.

SYMPTOM:The autoreverse reverses before the end of the tape.

CURE:Check friction and auto-stop friction.

SYMPTOM:Cassette lid does not close.

CURE:Cassette lid spring might be loose. Remount the cassette spring.

SYMPTOM:Codenumber information

CURE:Codenumber information The IC BA3528FP is now available via service code 4822 209 13503. This IC can also be added to service information A96-550 (Spare part codenumbers for Service Category I products.)

SYMPTOM:Auto reverse cassette deck plays in one direction only.

CURE:The reverse mechanism might be interrupted by C70 (1uF/50V), which can be replaced by a SMD capacitor (4822 126 11692). REMARKS : SMD capacitor is used in production from week 9708 onwards.

SYMPTOM:Battery inserting is difficult.

CURE:The batteries are blocked by the flat cables, connected to the equalizer board on the cassette door.A piece of PVC adhesive tape (35mm x 3.8mm) can be used to cover the flat cable under the battery compartment. REMARKS : Modification implemented in production from week 9708 onwards.

SYMPTOM:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-

CURE:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-550 - 4822 443 10378Battery Cover 4822 492 42743Cassette Door Spring 4822 443 11382Cassette Door (PHI) 4922 443 10379Cassette Door (MVX) 4822 101 11429Volume Control 4822 401 11627Belt Clip 4822 442 00445Cassette Door Cover 4822 450 10164Cassette Lens 4822 462 10769Rubber Keypad 4822 267 31862Headphone Jack 4822 265 10662DC Jack 4822 691 10516Tape Deck MCT-7

SYMPTOM:A squeaking sound is audible.

CURE:Pin 1 of IC LAG673 has loose contact due to the pressure from the rear cabinet.Check and touch up the solder connection at IC LAG673. REMARKS : From week 9522 onwards, rear cabinet has been modified to avoid pressing the IC.

SYMPTOM:No headphone output or headphone output signal is intermittent.

CURE:Fault is caused by a cracked copper-track at the headphone socket. Check copper-track and re-connect the broken track with jumpers. REMARKS : Following modification had been implemented : Main Cabinet tool from week 9516 onwards Rear Cabinet tool from week 9531 onwards Printed Circuit Board Copper-track from week 9538 onwards

SYMPTOM:Headphone interruption.

CURE:Fault might be caused by headphone wiring, which could have a dry joint connection to speaker, because temporarily two twisted wires have been applied with different lengths. REMARKS: The modified headphones have been implemented in production from week 9536 onwards.

SYMPTOM:Software problem memory loc in display

CURE:To solve this problem, press the reset at the backside. Attention: this action erases the memory.

SYMPTOM:Codenumber information

CURE:Codenumber information The connectors between the main board and the control board are available as service articles. service code numberdescription 4822 321 63152 Sumi ribbon wire (6C) 4822 267 51486 Flexible connector (11C) REMARKS : This publication will be followed by Service Information A95-568.

SYMPTOM:Spare part information

CURE:Spare part information IC item U101 TC9308AF-053 is now available with service code number 4822 209 12708.

SYMPTOM:No headphone output or headphone output signal is intermittent.

CURE:Fault is caused by a cracked copper-track at the headphone socket. Check copper-track and re-connect the broken track with jumpers. REMARKS : Following modification had been implemented : Main Cabinet tool from week 9516 onwards Rear Cabinet tool from week 9531 onwards Printed Circuit Board Copper-track from week 9538 onwards

SYMPTOM:A squeaking sound is audible.

CURE:Pin 1 of IC LAG673 has loose contact due to the pressure from the rear cabinet.Check and touch up the solder connection at IC LAG673. REMARKS : From week 9522 onwards, rear cabinet has been modified to avoid pressing the IC.

SYMPTOM:Spare part information

CURE:Spare part information IC item U101 TC9308AF-053 is now available with service code number 4822 209 12708.

SYMPTOM:Codenumber information

CURE:Codenumber information The connectors between the main board and the control board are available as service articles. service code numberdescription 4822 321 63152 Sumi ribbon wire (6C) 4822 267 51486 Flexible connector (11C) REMARKS : This publication will be followed by Service Information A95-568.

SYMPTOM:Weak sound from the cassette and tuner part.

CURE:Check mass contact of the headphone socket.

SYMPTOM:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-

CURE:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-550 - 4822 443 10308Battery Cover 4822 492 42743Cassette door spring 4822 459 04171Front Cabinet Assy (PHI) 4822 449 80074Front Cabinet Assy (MVX) 4822 101 11429Volume Control 4822 401 11627Belt Clip 4822 492 11172Cassette Spring Plate 4822 267 31862Headphone Jack 4822 691 10516Tape deck Following parts are for blue colour versions only : 4822 443 10452Battery Cover 4822 443 10465Cassette Door (PHI) 4822 443 10453Cassette Door (MVX) 4822 401 11649Belt Clip 4822 492 11336Cassette door Spring

SYMPTOM:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-

CURE:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-550 - 4822 443 10328Battery Cover 4822 492 11186Cassette Door Spring 4822 443 10327Cassette Door 4822 101 11459Volume Control 4822 401 11629Belt Clip 4822 381 11743Dial Lens 4822 410 10554Knob-DBB 4822 209 13626IC MM1104CF 4822 265 10621DC Jack 4822 267 31861Headphone Jack 4822 277 11566Switch-Slide DBB 4822 242 10441Headphone AY3660 4822 691 10528Tape Deck

SYMPTOM:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-

CURE:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-550 - 4822 443 10328Battery Cover 4822 492 11186Cassette Door Spring 4822 443 10381Cassette Door 4822 101 11459Volume Control 4822 401 11629Belt Clip 4822 381 11756Dial Lens 4822 458 10545Grille-Speaker 4822 410 10554Knob-DBB 4822 209 13626IC MM1104CF 4822 265 10621DC Jack 4822 267 31861Headphone Jack 4822 277 11566Switch-Slide DBB 4822 240 10151Speaker 36mm 8 ohm 4822 242 10441Headphone AY3660 4822 691 10528Tape Deck

SYMPTOM:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-

CURE:ADDITIONAL INFORMATION TO SERVICE INFORMATION A96-550 - 4822 443 10378Battery Cover 4822 492 42743Cassette Door Spring 4822 443 11382Cassette Door (PHI) 4922 443 10379Cassette Door (MVX) 4822 101 11429Volume Control 4822 401 11627Belt Clip 4822 442 00445Cassette Door Cover 4822 450 10164Cassette Lens 4822 462 10769Rubber Keypad 4822 267 31862Headphone Jack 4822 265 10662DC Jack 4822 691 10516Tape Deck MCT-7

SYMPTOM:Tape sound is distorted near strong electro-magnetic fields.

CURE:Problem can be solved by connecting two 390pF ceramic capacitors (4822 122 32121) from pins 6 and 23 to pin 10 (ground) of IC LAG668. IRIS CODE 2532

SYMPTOM:Tape sound is distorted near strong electro-magnetic fields.

CURE:Problem can be solved by connecting two 390pF ceramic capacitors (4822 122 32121) from pins 6 and 23 to pin 10 (ground) of IC LAG668.

SYMPTOM:The Belt Clip is broken.

CURE:The belt clip will be broken if it is not properly pressed into the mounting hole on the rear cabinet before turning to LOCK position. The Belt Clip is available via service codenumber 4822 401 11734. REMARKS : An addendum sheet with diagrams showing how to fix the Belt Clip was added to the set from week 9815 onwards. The belt Clip has also been modified (dimple added and letter PUSH engraved).

SYMPTOM:The Belt Clip is broken.

CURE:The belt clip will be broken if it is not properly pressed into the mounting hole on the rear cabinet before turning to its location.The Belt Clip is available via service code 4822 401 11734. REMARKS : An addendum sheet with diagrams shows how to fix the Belt Clip was added to the set from week 9815 onwards.The belt Clip was also modified with a dimple added and letter PUSH engraved.

SYMPTOM:The Belt Clip is broken.

CURE:The belt clip will be broken if it is not properly pressed into the mounting hole on the rear cabinet before turning to LOCK position. The Belt Clip is available via service codenumber 4822 401 11734. REMARKS : An addendum sheet with diagrams showing how to fix the Belt Clip was added to the set from week 9815 onwards. The belt Clip has also been modified (dimple added and letter PUSH engraved).

SYMPTOM:The Belt Clip is broken.

CURE:The belt clip will be broken if it is not properly pressed into the mounting hole on the rear cabinet before turning to its location.The Belt Clip is available via service code 4822 401 11734. REMARKS : An addendum sheet with diagrams shows how to fix the Belt Clip was added to the set from week 9815 onwards.The belt Clip was also modified with a dimple added and letter PUSH engraved.

SYMPTOM:Partslist

CURE:Partslist - Because it is impossible to replace display LC50 in the repairshop, this display is no longer available.

SYMPTOM:Service hint

CURE:Service hint The battery holder Pos. 191 service code: 4822 256 60325 in PCS does not come a wire soldered between the spring connection Pos.136 and one of the contacts Pos.123. For this reason it becomes necessary that during replacement of this part, the technician must solder this additional piece of wire. Material: Any Black wire of thickness AWG30 cut to length of 8cm including the bare portion at both ends. Steps: 1. Unscrew D1.7 x 4 and remove Pos 130 by uncatching at catch A. 2. Remove Pos 136 by uncatching at catch B. 3. Solder the wire 4. Reassemble Pos 130 and Pos 136 into the Battery holder Pos 140. 5. Dress the wire such that it does not obstruct the battery insertion (into the small groove provided and if necessy hold it down with a small tape).

SYMPTOM:One channel headphone interrupted.

CURE:Check headphone unit 4822 242 51167.

SYMPTOM:Too much flutter.

CURE:Ring pos.70 loose on capstan.

SYMPTOM:Service hint

CURE:Service hint The battery holder Pos. 191 service code: 4822 256 60325 in PCS does not come a wire soldered between the spring connection Pos.136 and one of the contacts Pos.123. For this reason it becomes necessary that during replacement of this part, the technician must solder this additional piece of wire. Material: Any Black wire of thickness AWG30 cut to length of 8cm including the bare portion at both ends. Steps: 1. Unscrew D1.7 x 4 and remove Pos 130 by uncatching at catch A. 2. Remove Pos 136 by uncatching at catch B. 3. Solder the wire 4. Reassemble Pos 130 and Pos 136 into the Battery holder Pos 140. 5. Dress the wire such that it does not obstruct the battery insertion (into the small groove provided and if necessy hold it down with a small tape).

SYMPTOM:Codenumber information

CURE:Codenumber information The flex pcb cable for the playback head is available under service codenumber 4822 321 10997.

SYMPTOM:The Belt Clip is broken.

CURE:The belt clip will be broken if it is not properly pressed into the mounting hole on the rear cabinet before turning to LOCK position. The Belt Clip is available via service codenumber 4822 401 11734. REMARKS : An addendum sheet with diagrams showing how to fix the Belt Clip was added to the set from week 9815 onwards. The belt Clip has also been modified (dimple added and letter PUSH engraved).

SYMPTOM:The Belt Clip is broken.

CURE:The belt clip will be broken if it is not properly pressed into the mounting hole on the rear cabinet before turning to its location.The Belt Clip is available via service code 4822 401 11734. REMARKS : An addendum sheet with diagrams shows how to fix the Belt Clip was added to the set from week 9815 onwards.The belt Clip was also modified with a dimple added and letter PUSH engraved.

SYMPTOM:Additional information to Service Manual :

CURE:Additional information to Service Manual : 4822 443 11087 is the Cassette Door Assembly which includes the following items : 4, 6, 7, 9, 10, 15, 18, 19, 30, 31, 32, E3

SYMPTOM:Uncomplete erase during recording of chrome cass

CURE:Uncomplete erase during recording of chrome cassette During recording of chrome cassette it may happens that existing information on the cassette tape is not completely erased. The problem is due to not enough erase current. To resolve this problem change capacitors 2783 from 3.3nF to 12nF, 2785 from 12nF to 15nF and 2786 from 220pF to 100pF.

SYMPTOM:Correction Partslist

CURE:Correction Partslist Top cover item 436 was coded 4822 691 20741 but the service order number should read: 4822 426 60633.

SYMPTOM:Sound volume of the tape deck part is fluctuating

CURE:Check switch 1707 (4822 277 20594) for interruptions.

SYMPTOM:The sound level suddenly decreases for 2 seconds in recording mode.

CURE:The problem can be solved by replacing the record switch 1707 (4822 277 20594).

SYMPTOM:Uncomplete erase during recording of chrome cass

CURE:Uncomplete erase during recording of chrome cassette During recording of chrome cassette it may happens that existing information on the cassette tape is not completely erased. The problem is due to not enough erase current. To resolve this problem change capacitors 2783 from 3.3nF to 12nF, 2785 from 12nF to 15nF and 2786 from 220pF to 100pF.

SYMPTOM:Spare part information

CURE:Spare part information The clamping block (for mounting the Record Player dust cover) service code: 4822 417 10631 previous consists of a clamping block and hinge pen is now separated into two parts. a) Clamping block service code: 4822 417 10631 b) Pen service code: 4822 535 93499 Due to this change the undermentioned position nos. are changed to the new code. Pos 446 - AS305, AS9300 Pos 439 - AS405, TS450, AS9400, AS9402, AS9410, AS9412 Pos 437 - AS505, AS9500, AS9510 Pos 443 - AS9406, AS9408, AS9416, AS9418, AS9506, AS9516

SYMPTOM:Correction partslist

CURE:Correction partslist Top cover item 436 was coded 4822 691 20741 but the service order number should read 4822 426 40457.

SYMPTOM:Integrated circuits 7253 and 7254 blown.

CURE:Add sufficient silicon compound between the replaced transistors and the heatsink. REMARKS : From productionweek 9309 onwards the productionprocess has been adapted to apply the silicon compound properly.

SYMPTOM:Sound volume of the tape deck part is fluctuating.

CURE:Check switch SW1707 for interruptions.

SYMPTOM:Humming sound from right channel.

CURE:Check endstage IC7254.

SYMPTOM:Set switches automatically to ADD or other source.

CURE:IR reception too sensitive, reacts even on normal lamp light. ReplaceIR pos.6420 (4822 130 81254).

SYMPTOM:Correction Partslist

CURE:Correction Partslist Top cover item 436 was coded 4822 691 20741 but the service order number should read: 4822 426 60633.

SYMPTOM:Only dim light on display.

CURE:TR7401 (BC338/40) defective, uP does not get supply voltage.

SYMPTOM:The sound level suddenly decreases for 2 seconds in recording mode.

CURE:The problem can be solved by replacing the record switch 1707 (4822 277 20594).

SYMPTOM:Sound volume of the tape deck part is fluctuating

CURE:Check switch 1707 (4822 277 20594) for interruptions.

SYMPTOM:Spare part information

CURE:Spare part information The clamping block (for mounting the Record Player dust cover) service code: 4822 417 10631 previous consists of a clamping block and hinge pen is now separated into two parts. a) Clamping block service code: 4822 417 10631 b) Pen service code: 4822 535 93499 Due to this change the undermentioned position nos. are changed to the new code. Pos 446 - AS305, AS9300 Pos 439 - AS405, TS450, AS9400, AS9402, AS9410, AS9412 Pos 437 - AS505, AS9500, AS9510 Pos 443 - AS9406, AS9408, AS9416, AS9418, AS9506, AS9516

SYMPTOM:CD cannot start-up or is humming.

CURE:CAUSE: The voltage regulator, MCT7805CT supplied by manufacturer has been found to oscillate at its output. This can be seen on a scope as an oscillation (as high as 2V peak-to-peak approx.0.4MHz) superposed onto the 5V dc. The fault is due to supplier's in-house IC fabrication process - internal compensation capacitor is not connected. Add capacitor 0.47uF (4822 124 41407) across the output terminal and ground as close as possible to the IC. REMARKS : The affected ICs batches date between week 9402 up to 9427 although IC fabrication process was improved in week 9425.New Test Program to screen out defective IC was implemented by the Supplier in week 9430. The batch week code can be identify by: x x x 4 0 2 ¦ + week code

SYMPTOM:Left channel no sound.

CURE:Check IC7313 (4822 209 73356).

SYMPTOM:Whistling sound (zooming sound) of ¸ 500Hz is audible during play.

CURE:Whistling sound (zooming sound) ofÐQ 500Hz is audible during play. In worst case skip tracks will happen and the audio output is interrupted.This phenomenon occurs especially at low temperature and when playing thin disc. This is caused by oscillating of CD mechanism CDM 12.1 Replace the existing disc clamper assembly by an improved one (service code number: 4822 691 30358) which is heavier and prevents CDM12.1 to oscillate. REMARKS : Full implementation of the improved disc clamper assembly in production from week 9442 onwards.The set can be recognized by: ModelSerial no.Introduction AS440RZ 01 ....wk 9443 AS540RZ 01 ....wk 9443

SYMPTOM:Totally inoperative.

CURE:Check endstage IC7314 (4822 209 73356).

SYMPTOM:Noisy sound from CD.

CURE:Check DAC IC7102 (SAA7341; 4822 209 30388).

SYMPTOM:NO DISC indication.

CURE:Check CDM (4822 691 30278).

SYMPTOM:No sound from the CD player.

CURE:Check the decoder/DAC IC7102 (SAA7341GP; 4822 209 30388).

SYMPTOM:CD gives NO DISC indication. Disc speed is incorrect.

CURE:Check the decoder/DAC IC7102 (SAA7341GP; 4822 209 30388).

SYMPTOM:No back light from the display.

CURE:Check the light driver transistor T7424 (BC327).

SYMPTOM:Long recovering-time of automatic level control (Recorder Board)

CURE:Phenemenon occurs after strong Audio levels. Change resistor 3727 into 220k (4822 116 52258) and resistor 3731 into 2k2 (4822 116 52256).

SYMPTOM:The CD part stops playing after some time.

CURE:Check servo processor IC7700 (4822 900 10318).

SYMPTOM:CD inoperative.

CURE:Check processor IC7700 (4822 900 10318).

SYMPTOM:Set does not switch on.

CURE:Check clear switch S1446 (4822 276 13114).

SYMPTOM:CD Drawer does not open/close because items 202 and 204 are damaged.

CURE:The root cause of the problem is the insufficient guidance of the drawer that can jump over the gear wheel 202, such that the drawer cannot be closed completely.If the drawer is pulled or pushed, the cam gear will be damaged. Two guiding-brackets items 503 and 504 have been added at item 216 (tray). Also the pinion gear 213 has been modified. These actions reduce the risk of misalignment or damage to gear wheel 202 and the cam gear 204 when the CD tray is pulled or pushed. To avoid a repeat-repair, replace following components: pos 202, 4822 522 33464, tooth-wheel tray pos 204, 4822 522 33465, cam-wheel pos 208, 4822 528 70851, idler wheel 1 pos 209, 4822 528 70852, idler wheel 2 pos 213, 4822 532 52573, pignon guiding construction pos 216, 4822 444 40727, tray REMARKS: This information concerns module called Short Loader and ECO Short Loader. These modules have been applied in all above mentioned sets and this phenomenon may occur. This information also refers to newsletter publications issue 64.40; 65.01 and 96.06.05. In newsletter 65.01 was also the typenumber FW33 included. However in this set a 3 disc changer is applied and not the short loader module.

SYMPTOM:CD inoperative. Disc does not turn.

CURE:Check whether rubber ring pos 108 is loose and stuck between pos 87; Remove ring.

SYMPTOM:CD does not start-up or is humming.

CURE:This fault is caused by the voltage regulator, MCT7805CT oscillates at its output stage. This can be seen on oscilloscope as an oscillation (with 2V peak-to-peak, approx. 0.4 MHz) superposed onto the 5V dc. To solve this fault add a capacitor of 0.47uF (4822 124 41407) across the output terminal and ground as close as possible to the IC. REMARKS : The affected IC batches date between week 9402 up to 9430. The batch week code can be identified by: x x x 4 0 2 ¦ + week code

SYMPTOM:CD gives NO DISC indication. Does not find focus.

CURE:Check focus coil. Focus coil might be interrupted. Replace CDM (4822 691 30278).

SYMPTOM:CD door does not close fully or opens automatically after close.

CURE:The phenomenon will occur if the CD door is closed by strongly pushing the tray.This creates misalignment or damage to the tooth-wheels items 202 and 204. By this strong force also the pinion guiding gears on item 213 are loosened from their shaft. The problem can be corrected by the following actions: 1. Check if the gears 202 and 204 are not damaged. 2. Replace item 213 (4822 532 52573 = pinion guiding gear) by a modified one having a closed end and re-align the gears 202 and 204 correctly. Be sure that both pinion guiding gears have been fixed mounted (glued) on the shaft item 213. 3. Replace, if necessary, tray pos 216 (4822 444 40727) by one having guiding brackets pos 503 & 504 mounted. REMARKS : From week 9504 the improved tray (216) with guides was introduced. From week 9543 improved Pinion guiding gear, pos 213 (gear with on end closed) was introduced. This is additional information on newsletter item 64.40. (gears fixed to shaft) Further to the newsletter 64.40: It is recommended to check in every returned set, whether the pinion guiding gears on item 213 are fixed to the shaft.

SYMPTOM:Service hints on CDM12.1 mechanical disc drive uni

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of other service hints to solve some symptoms are given. A survey of a possible fault cause, how to check and solve this fault is given. SERVICE HINTS CDM12.1 SYMPTOM: NO FUNCTION - gives error - no focus - no T.O.C. CAUSE grease or dirt on lens CHECK visual check with magnifying glass or microscope ACTION Clean lens, see cleaning instructions CAUSE dirt in airgap of actuator CHECK service mode 1: check actuator movement, visual check of actuator. ACTION Remove dirt from airgap. CAUSE sledge switch (3) loose CHECK check if screw (4) has been tightened. ACTION Tighten screw. CAUSE Soldering on Printed Circuit Board of pick-up unit (20) CHECK visual check of soldering ACTION Correct soldering CAUSE dirt on flex connection (13) CHECK visual check of flex connection ACTION Clean flex connections CAUSE glue on slide path of pick-up unit. CHECK visual check of slide path. ACTION Remove glue from slide path. SYMPTOM CD STOPS IN PLAY MODE -stops after a while -stops playing CAUSE burr on gear-wheel(6) CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM NOISE DURING SLED MOVEMENT. CAUSE gear-wheel (6) damaged. CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM DOES NOT PLAY END OF DISC CAUSE gear-wheel (6) badly moulded CHECK visual check of gear-wheel ACTION Replace gear-wheel. Service code: 4822 522 33537 CAUSE rubber tulle (10) poorly assembled CHECK visual check tulle position. ACTION Correct position. CAUSE speedfix (12) poorly assembled. CHECK visual check speedfix position. ACTION Correct position. CAUSE glue on slide path CHECK visual check of slide path ACTION Remove glue. SYMPTOM NO T.O.C. (Table of contents) RATTLING NOISE CAUSE rubber tulle (9) poorly assembled. CHECK visual check tulle position ACTION Correct position. CAUSE speedfix (11) poorly assembled. CHECK visual check speedfix position ACTION Correct position. (..) : item number in exploded view of CDM. In the next the item numbers with service codenumbers are stated. Item Service codenumbedescription 1..204822 691 30278 CDM12.1 complete 34822 277 11466 Slide switch 64822 522 33537 gear-wheel 74822 361 30457 sledge motor

SYMPTOM:Spare part information

CURE:Spare part information The short-loader kit contains the parts needed for repair. Use all parts to prevent a repeat. Pos. 202 4833 522 33464 Pos. 213 4822 532 52573 Pos. 204 4822 522 33465 Pos. 216 4822 444 40727 Pos. 208 4822 528 70851 Pos. 209 4822 528 70852 in case of damaged 202 and 204

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Codenumber information

CURE:Codenumber information Button set deck B, pos. 426 is 4822 410 62619

SYMPTOM:Introduction of turntable support ring on CDM12.1

CURE:Introduction of turntable support ring on CDM12.1 - To prevent that the turntable of the CDM12.1 mechanism (4822 691 30278) will be pressed down, a turntable support ring has been introduced from week 9532 onwards. The factory label code on this modified CDM12.1 reads 1VU02.

SYMPTOM:Codenumber information

CURE:Codenumber information Button set deck A, pos. 431 is 4822 410 62621

SYMPTOM:Service hints on CDM12.1 mechanical disc drive uni

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of known fieldproblems (symptom) and the repair hints are given. In case the hint has been published already the publication has been given in column 'published'. Furthermore the survey shows the corrective actions with their introduction dates (production week) and the way to recognize the modified CDM (see column 'change code'). SURVEY FIELDPROBLEMS CDM12.1 SYMPTOM Sledge motor loose PUBLISHED no SERVICE HINTFix sledge motor with double sided adhesive tape of 0.1 mm. CORRECTIVE ACTION Implementation of double sided adhesive tape to glue the motor. CHANGE CODE 1 SV03 PRODUCTION WEEK 9434 SYMPTOM Turntable loose PUBLISHED no SERVICE HINTReplace CDM mechanism; CDM12.1 is available with 4822 691 30278 CORRECTIVE ACTION 100% check of CDM CHANGE CODE unchanged PRODUCTION WEEK 9440 CORRECTIVE ACTION 2 extra buffers on top of packaging. Gluing process improved. CHANGE CODE unchanged PRODUCTION WEEK 9445 SYMPTOM Zooming sound PUBLISHED Newsletter 54, 55, 57. SERVICE HINT a) Replace magnet clamper by a new clamper with an extra weight. short loader (1): 4822 691 30358. cd loader (2): 4822 691 30358. cdc 5 disc changer (3): 4822 532 52655. CORRECTIVE ACTION Introduction of clamper with additional weight. CHANGE CODE unchanged PRODUCTION WEEK 9445 CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9506 SERVICE HINT (b)For the cdc 7 disc changer module (4) a heavier clamper has been applied, the zooming sound complaint is not expected. In case of zooming sound replace CDM12.1 (4822 691 30278). CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9510 (1) Applied in sets a.o. AS440, AS445, AS450, AS455, AS540, AS545, AS550, AZ8640, CCD66, FW17, FW24, FW26, FW46, FW47, FW68 (2) Applied in sets a.o. CD163, CD165, CD690, CD692, CD710, CD720, CD721, CD731, CD732, CD733, CD740, CD750, CD911, CD910, CD920, CD921, FW26 (3) Applied in sets a.o. AS640, CDC263, CDC265, CDC741, CDC745, CDC751, CDC794, CDC796, CDC916, CDC926, CDC936 (4) Applied in sets a.o. FW14, FW15, FW36, FW56

SYMPTOM:Skips tracks. Disc turns counter-clockwise in service test mode

CURE:Remount drawer, pay attention to wheel pos 202, pos 216.

SYMPTOM:The drawer is stuck.

CURE:Remount toothed wheels pos 202 and 204 in the right position.

SYMPTOM:Correction Service Manual

CURE:Correction Service Manual - Service codenumber for mainstransformer AS440/22G should read 4822 146 31361, instead of 4822 146 31363.

SYMPTOM:Correction to Service Manual

CURE:Correction to Service Manual 4822 725 24929 and 4822 725 24936. On page 74 the codenumbers for the button sets of the tape decks are mixed up. Correct is: pos.codenumberdescription 426 4822 410 62619Button set deck B 431 4822 410 62621Button set deck A

SYMPTOM:CD part inoperative.

CURE:Check IC7080 (TCA0372DP2; 4822 209 72587).

SYMPTOM:Erase oscillator interferences with AM stations.

CURE:Dependant on the required AM frequency the erase oscillator circuit, on recorder board, has to be tuned up or down. Therefore change capacitor (item 2783) from 12nF either to 10nF (service code number: 4822 121 41857) or 15nF (service code number: 5322 121 42975) item:value:osc. frequency: 2783 12nF63.3 kHz (original) 2783 10nF65.6 kHz 2783 15nF61.7 kHz

SYMPTOM:Does not start. Gives ERROR. CDM cannot find the focus point.

CURE:Check the CDM (4822 691 30278).

SYMPTOM:Display and cassette inoperative, only CD drawer is functioning.

CURE:Check supply transistor T7252

SYMPTOM:The CD part is sometimes totally inoperative.

CURE:Check connection of white wire to sledge motor.

SYMPTOM:Cassette recorder gives to much flutter.

CURE:Check the motor axis and the motor pulley.

SYMPTOM:CD Drawer does not open/close because items 202 and 204 are damaged.

CURE:The root cause of the problem is the insufficient guidance of the drawer that can jump over the gear wheel 202, such that the drawer cannot be closed completely.If the drawer is pulled or pushed, the cam gear will be damaged. Two guiding-brackets items 503 and 504 have been added at item 216 (tray). Also the pinion gear 213 has been modified. These actions reduce the risk of misalignment or damage to gear wheel 202 and the cam gear 204 when the CD tray is pulled or pushed. To avoid a repeat-repair, replace following components: pos 202, 4822 522 33464, tooth-wheel tray pos 204, 4822 522 33465, cam-wheel pos 208, 4822 528 70851, idler wheel 1 pos 209, 4822 528 70852, idler wheel 2 pos 213, 4822 532 52573, pignon guiding construction pos 216, 4822 444 40727, tray REMARKS: This information concerns module called Short Loader and ECO Short Loader. These modules have been applied in all above mentioned sets and this phenomenon may occur. This information also refers to newsletter publications issue 64.40; 65.01 and 96.06.05. In newsletter 65.01 was also the typenumber FW33 included. However in this set a 3 disc changer is applied and not the short loader module.

SYMPTOM:Rattling sound from CD part. The sledge is not moving.

CURE:Check whether a piece of the lineair thoothed rail is broken. Replace CDM (4822 691 30278).

SYMPTOM:CD door does not close fully or opens automatically after close.

CURE:The phenomenon will occur if the CD door is closed by strongly pushing the tray.This creates misalignment or damage to the tooth-wheels items 202 and 204. By this strong force also the pinion guiding gears on item 213 are loosened from their shaft. The problem can be corrected by the following actions: 1. Check if the gears 202 and 204 are not damaged. 2. Replace item 213 (4822 532 52573 = pinion guiding gear) by a modified one having a closed end and re-align the gears 202 and 204 correctly. Be sure that both pinion guiding gears have been fixed mounted (glued) on the shaft item 213. 3. Replace, if necessary, tray pos 216 (4822 444 40727) by one having guiding brackets pos 503 & 504 mounted. REMARKS : From week 9504 the improved tray (216) with guides was introduced. From week 9543 improved Pinion guiding gear, pos 213 (gear with on end closed) was introduced. This is additional information on newsletter item 64.40. (gears fixed to shaft) Further to the newsletter 64.40: It is recommended to check in every returned set, whether the pinion guiding gears on item 213 are fixed to the shaft.

SYMPTOM:The drawer of the CD-part does not open.

CURE:Check whether the drawer belt (pos102) is not loose. Remount the belt.

SYMPTOM:HELLO is shown on the display.

CURE:This phenomenon only appears when the mains cable is connected to the set, i.e. when moving the set to another place. The message automatically disappears after a few seconds, when the set switches into the standby-mode.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Codenumber information

CURE:Codenumber information Button set deck A, pos. 431 is 4822 410 62621

SYMPTOM:Codenumber information

CURE:Codenumber information Button set deck B, pos. 426 is 4822 410 62619

SYMPTOM:Spare part information

CURE:Spare part information The clamping block (for mounting the Record Player dust cover) service code: 4822 417 10631 previous consists of a clamping block and hinge pen is now separated into two parts. a)Clamping block service code: 4822 417 10631, item 466 b)Pen service code: 4822 535 93499, item 464

SYMPTOM:Service hints on CDM12.1 mechanical disc drive uni

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of other service hints to solve some symptoms are given. A survey of a possible fault cause, how to check and solve this fault is given. SERVICE HINTS CDM12.1 SYMPTOM: NO FUNCTION - gives error - no focus - no T.O.C. CAUSE grease or dirt on lens CHECK visual check with magnifying glass or microscope ACTION Clean lens, see cleaning instructions CAUSE dirt in airgap of actuator CHECK service mode 1: check actuator movement, visual check of actuator. ACTION Remove dirt from airgap. CAUSE sledge switch (3) loose CHECK check if screw (4) has been tightened. ACTION Tighten screw. CAUSE Soldering on Printed Circuit Board of pick-up unit (20) CHECK visual check of soldering ACTION Correct soldering CAUSE dirt on flex connection (13) CHECK visual check of flex connection ACTION Clean flex connections CAUSE glue on slide path of pick-up unit. CHECK visual check of slide path. ACTION Remove glue from slide path. SYMPTOM CD STOPS IN PLAY MODE -stops after a while -stops playing CAUSE burr on gear-wheel(6) CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM NOISE DURING SLED MOVEMENT. CAUSE gear-wheel (6) damaged. CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM DOES NOT PLAY END OF DISC CAUSE gear-wheel (6) badly moulded CHECK visual check of gear-wheel ACTION Replace gear-wheel. Service code: 4822 522 33537 CAUSE rubber tulle (10) poorly assembled CHECK visual check tulle position. ACTION Correct position. CAUSE speedfix (12) poorly assembled. CHECK visual check speedfix position. ACTION Correct position. CAUSE glue on slide path CHECK visual check of slide path ACTION Remove glue. SYMPTOM NO T.O.C. (Table of contents) RATTLING NOISE CAUSE rubber tulle (9) poorly assembled. CHECK visual check tulle position ACTION Correct position. CAUSE speedfix (11) poorly assembled. CHECK visual check speedfix position ACTION Correct position. (..) : item number in exploded view of CDM. In the next the item numbers with service codenumbers are stated. Item Service codenumbedescription 1..204822 691 30278 CDM12.1 complete 34822 277 11466 Slide switch 64822 522 33537 gear-wheel 74822 361 30457 sledge motor

SYMPTOM:Spare part information

CURE:Spare part information The short-loader kit contains the parts needed for repair. Use all parts to prevent a repeat. Pos. 202 4833 522 33464 Pos. 213 4822 532 52573 Pos. 204 4822 522 33465 Pos. 216 4822 444 40727 Pos. 208 4822 528 70851 Pos. 209 4822 528 70852 in case of damaged 202 and 204

SYMPTOM:Introduction of turntable support ring on CDM12.1

CURE:Introduction of turntable support ring on CDM12.1 - To prevent that the turntable of the CDM12.1 mechanism (4822 691 30278) will be pressed down, a turntable support ring has been introduced from week 9532 onwards. The factory label code on this modified CDM12.1 reads 1VU02.

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of known fieldproblems (symptom) and the repair hints are given. In case the hint has been published already the publication has been given in column 'published'. Furthermore the survey shows the corrective actions with their introduction dates (production week) and the way to recognize the modified CDM (see column 'change code'). SURVEY FIELDPROBLEMS CDM12.1 SYMPTOM Sledge motor loose PUBLISHED no SERVICE HINTFix sledge motor with double sided adhesive tape of 0.1 mm. CORRECTIVE ACTION Implementation of double sided adhesive tape to glue the motor. CHANGE CODE 1 SV03 PRODUCTION WEEK 9434 SYMPTOM Turntable loose PUBLISHED no SERVICE HINTReplace CDM mechanism; CDM12.1 is available with 4822 691 30278 CORRECTIVE ACTION 100% check of CDM CHANGE CODE unchanged PRODUCTION WEEK 9440 CORRECTIVE ACTION 2 extra buffers on top of packaging. Gluing process improved. CHANGE CODE unchanged PRODUCTION WEEK 9445 SYMPTOM Zooming sound PUBLISHED Newsletter 54, 55, 57. SERVICE HINT a) Replace magnet clamper by a new clamper with an extra weight. short loader (1): 4822 691 30358. cd loader (2): 4822 691 30358. cdc 5 disc changer (3): 4822 532 52655. CORRECTIVE ACTION Introduction of clamper with additional weight. CHANGE CODE unchanged PRODUCTION WEEK 9445 CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9506 SERVICE HINT (b)For the cdc 7 disc changer module (4) a heavier clamper has been applied, the zooming sound complaint is not expected. In case of zooming sound replace CDM12.1 (4822 691 30278). CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9510 (1) Applied in sets a.o. AS440, AS445, AS450, AS455, AS540, AS545, AS550, AZ8640, CCD66, FW17, FW24, FW26, FW46, FW47, FW68 (2) Applied in sets a.o. CD163, CD165, CD690, CD692, CD710, CD720, CD721, CD731, CD732, CD733, CD740, CD750, CD911, CD910, CD920, CD921, FW26 (3) Applied in sets a.o. AS640, CDC263, CDC265, CDC741, CDC745, CDC751, CDC794, CDC796, CDC916, CDC926, CDC936 (4) Applied in sets a.o. FW14, FW15, FW36, FW56

SYMPTOM:Correction to Service Manual

CURE:Correction to Service Manual 4822 725 24929 and 4822 725 24936. On page 74 the codenumbers for the button sets of the tape decks are mixed up. Correct is: pos.codenumberdescription 426 4822 410 62619Button set deck B 431 4822 410 62621Button set deck A

SYMPTOM:CD does not function

CURE:Check/replace CDM (4822 691 30278)

SYMPTOM:The tapedeck part does not erase.

CURE:The bias oscillator does not run. Check soldering points of transistor T7712.

SYMPTOM:CD Drawer does not open/close because items 202 and 204 are damaged.

CURE:The root cause of the problem is the insufficient guidance of the drawer that can jump over the gear wheel 202, such that the drawer cannot be closed completely.If the drawer is pulled or pushed, the cam gear will be damaged. Two guiding-brackets items 503 and 504 have been added at item 216 (tray). Also the pinion gear 213 has been modified. These actions reduce the risk of misalignment or damage to gear wheel 202 and the cam gear 204 when the CD tray is pulled or pushed. To avoid a repeat-repair, replace following components: pos 202, 4822 522 33464, tooth-wheel tray pos 204, 4822 522 33465, cam-wheel pos 208, 4822 528 70851, idler wheel 1 pos 209, 4822 528 70852, idler wheel 2 pos 213, 4822 532 52573, pignon guiding construction pos 216, 4822 444 40727, tray REMARKS: This information concerns module called Short Loader and ECO Short Loader. These modules have been applied in all above mentioned sets and this phenomenon may occur. This information also refers to newsletter publications issue 64.40; 65.01 and 96.06.05. In newsletter 65.01 was also the typenumber FW33 included. However in this set a 3 disc changer is applied and not the short loader module.

SYMPTOM:CD door does not close fully or opens automatically after close.

CURE:The phenomenon will occur if the CD door is closed by strongly pushing the tray.This creates misalignment or damage to the tooth-wheels items 202 and 204. By this strong force also the pinion guiding gears on item 213 are loosened from their shaft. The problem can be corrected by the following actions: 1. Check if the gears 202 and 204 are not damaged. 2. Replace item 213 (4822 532 52573 = pinion guiding gear) by a modified one having a closed end and re-align the gears 202 and 204 correctly. Be sure that both pinion guiding gears have been fixed mounted (glued) on the shaft item 213. 3. Replace, if necessary, tray pos 216 (4822 444 40727) by one having guiding brackets pos 503 & 504 mounted. REMARKS : From week 9504 the improved tray (216) with guides was introduced. From week 9543 improved Pinion guiding gear, pos 213 (gear with on end closed) was introduced. This is additional information on newsletter item 64.40. (gears fixed to shaft) Further to the newsletter 64.40: It is recommended to check in every returned set, whether the pinion guiding gears on item 213 are fixed to the shaft.

SYMPTOM:CD Drawer cannot open or close because items 202 and 204 are damaged.

CURE:The root cause of the problem is the insufficient guidance of the drawer that can jump over the gear wheel 202, such that the drawer cannot be closed completely.If the drawer is pulled or pushed, the cam gear will be damaged. Two guiding-brackets items 503 and 504 have been added at item 216 (tray). Also the pinion gear 213 has been modified. These actions reduce the risk of misalignment or damage to gear wheel 202 and the cam gear 204 when the CD tray is pulled or pushed. For more information see newsletter publication issue 64.40 and 65.01 REMARKS : This modification has been implemented in production from week 9610 onwards.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of other service hints to solve some symptoms are given. A survey of a possible fault cause, how to check and solve this fault is given. SERVICE HINTS CDM12.1 SYMPTOM: NO FUNCTION - gives error - no focus - no T.O.C. CAUSE grease or dirt on lens CHECK visual check with magnifying glass or microscope ACTION Clean lens, see cleaning instructions CAUSE dirt in airgap of actuator CHECK service mode 1: check actuator movement, visual check of actuator. ACTION Remove dirt from airgap. CAUSE sledge switch (3) loose CHECK check if screw (4) has been tightened. ACTION Tighten screw. CAUSE Soldering on Printed Circuit Board of pick-up unit (20) CHECK visual check of soldering ACTION Correct soldering CAUSE dirt on flex connection (13) CHECK visual check of flex connection ACTION Clean flex connections CAUSE glue on slide path of pick-up unit. CHECK visual check of slide path. ACTION Remove glue from slide path. SYMPTOM CD STOPS IN PLAY MODE -stops after a while -stops playing CAUSE burr on gear-wheel(6) CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM NOISE DURING SLED MOVEMENT. CAUSE gear-wheel (6) damaged. CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM DOES NOT PLAY END OF DISC CAUSE gear-wheel (6) badly moulded CHECK visual check of gear-wheel ACTION Replace gear-wheel. Service code: 4822 522 33537 CAUSE rubber tulle (10) poorly assembled CHECK visual check tulle position. ACTION Correct position. CAUSE speedfix (12) poorly assembled. CHECK visual check speedfix position. ACTION Correct position. CAUSE glue on slide path CHECK visual check of slide path ACTION Remove glue. SYMPTOM NO T.O.C. (Table of contents) RATTLING NOISE CAUSE rubber tulle (9) poorly assembled. CHECK visual check tulle position ACTION Correct position. CAUSE speedfix (11) poorly assembled. CHECK visual check speedfix position ACTION Correct position. (..) : item number in exploded view of CDM. In the next the item numbers with service codenumbers are stated. Item Service codenumbedescription 1..204822 691 30278 CDM12.1 complete 34822 277 11466 Slide switch 64822 522 33537 gear-wheel 74822 361 30457 sledge motor

SYMPTOM:Spare part information

CURE:Spare part information The short-loader kit contains the parts needed for repair. Use all parts to prevent a repeat. Pos. 202 4833 522 33464 Pos. 213 4822 532 52573 Pos. 204 4822 522 33465 Pos. 216 4822 444 40727 Pos. 208 4822 528 70851 Pos. 209 4822 528 70852 in case of damaged 202 and 204

SYMPTOM:Introduction of turntable support ring on CDM12.1

CURE:Introduction of turntable support ring on CDM12.1 - To prevent that the turntable of the CDM12.1 mechanism (4822 691 30278) will be pressed down, a turntable support ring has been introduced from week 9532 onwards. The factory label code on this modified CDM12.1 reads 1VU02.

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of known fieldproblems (symptom) and the repair hints are given. In case the hint has been published already the publication has been given in column 'published'. Furthermore the survey shows the corrective actions with their introduction dates (production week) and the way to recognize the modified CDM (see column 'change code'). SURVEY FIELDPROBLEMS CDM12.1 SYMPTOM Sledge motor loose PUBLISHED no SERVICE HINTFix sledge motor with double sided adhesive tape of 0.1 mm. CORRECTIVE ACTION Implementation of double sided adhesive tape to glue the motor. CHANGE CODE 1 SV03 PRODUCTION WEEK 9434 SYMPTOM Turntable loose PUBLISHED no SERVICE HINTReplace CDM mechanism; CDM12.1 is available with 4822 691 30278 CORRECTIVE ACTION 100% check of CDM CHANGE CODE unchanged PRODUCTION WEEK 9440 CORRECTIVE ACTION 2 extra buffers on top of packaging. Gluing process improved. CHANGE CODE unchanged PRODUCTION WEEK 9445 SYMPTOM Zooming sound PUBLISHED Newsletter 54, 55, 57. SERVICE HINT a) Replace magnet clamper by a new clamper with an extra weight. short loader (1): 4822 691 30358. cd loader (2): 4822 691 30358. cdc 5 disc changer (3): 4822 532 52655. CORRECTIVE ACTION Introduction of clamper with additional weight. CHANGE CODE unchanged PRODUCTION WEEK 9445 CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9506 SERVICE HINT (b)For the cdc 7 disc changer module (4) a heavier clamper has been applied, the zooming sound complaint is not expected. In case of zooming sound replace CDM12.1 (4822 691 30278). CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9510 (1) Applied in sets a.o. AS440, AS445, AS450, AS455, AS540, AS545, AS550, AZ8640, CCD66, FW17, FW24, FW26, FW46, FW47, FW68 (2) Applied in sets a.o. CD163, CD165, CD690, CD692, CD710, CD720, CD721, CD731, CD732, CD733, CD740, CD750, CD911, CD910, CD920, CD921, FW26 (3) Applied in sets a.o. AS640, CDC263, CDC265, CDC741, CDC745, CDC751, CDC794, CDC796, CDC916, CDC926, CDC936 (4) Applied in sets a.o. FW14, FW15, FW36, FW56

SYMPTOM:No disc in display, disc not correct on the drawer after opening.

CURE:Complaint caused by wrong position between pos 202 and 204. REMARKS: See also Newsletter 65.01

SYMPTOM:CD Drawer cannot open or close because items 202 and 204 are damaged.

CURE:The root cause of the problem is the insufficient guidance of the drawer that can jump over the gear wheel 202, such that the drawer cannot be closed completely.If the drawer is pulled or pushed, the cam gear will be damaged. Two guiding-brackets items 503 and 504 have been added at item 216 (tray). Also the pinion gear 213 has been modified. These actions reduce the risk of misalignment or damage to gear wheel 202 and the cam gear 204 when the CD tray is pulled or pushed. For more information see newsletter publication issue 64.40 and 65.01 REMARKS : This modification has been implemented in production from week 9610 onwards.

SYMPTOM:HELLO is shown on the display.

CURE:This phenomenon only appears whenever the set is disconnected (or switched off) from the mains supply. There is nothing wrong with the set, all you have to do is to switch the set off and on again; the word HELLO will than disappear.

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of known fieldproblems (symptom) and the repair hints are given. In case the hint has been published already the publication has been given in column 'published'. Furthermore the survey shows the corrective actions with their introduction dates (production week) and the way to recognize the modified CDM (see column 'change code'). SURVEY FIELDPROBLEMS CDM12.1 SYMPTOM Sledge motor loose PUBLISHED no SERVICE HINTFix sledge motor with double sided adhesive tape of 0.1 mm. CORRECTIVE ACTION Implementation of double sided adhesive tape to glue the motor. CHANGE CODE 1 SV03 PRODUCTION WEEK 9434 SYMPTOM Turntable loose PUBLISHED no SERVICE HINTReplace CDM mechanism; CDM12.1 is available with 4822 691 30278 CORRECTIVE ACTION 100% check of CDM CHANGE CODE unchanged PRODUCTION WEEK 9440 CORRECTIVE ACTION 2 extra buffers on top of packaging. Gluing process improved. CHANGE CODE unchanged PRODUCTION WEEK 9445 SYMPTOM Zooming sound PUBLISHED Newsletter 54, 55, 57. SERVICE HINT a) Replace magnet clamper by a new clamper with an extra weight. short loader (1): 4822 691 30358. cd loader (2): 4822 691 30358. cdc 5 disc changer (3): 4822 532 52655. CORRECTIVE ACTION Introduction of clamper with additional weight. CHANGE CODE unchanged PRODUCTION WEEK 9445 CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9506 SERVICE HINT (b)For the cdc 7 disc changer module (4) a heavier clamper has been applied, the zooming sound complaint is not expected. In case of zooming sound replace CDM12.1 (4822 691 30278). CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9510 (1) Applied in sets a.o. AS440, AS445, AS450, AS455, AS540, AS545, AS550, AZ8640, CCD66, FW17, FW24, FW26, FW46, FW47, FW68 (2) Applied in sets a.o. CD163, CD165, CD690, CD692, CD710, CD720, CD721, CD731, CD732, CD733, CD740, CD750, CD911, CD910, CD920, CD921, FW26 (3) Applied in sets a.o. AS640, CDC263, CDC265, CDC741, CDC745, CDC751, CDC794, CDC796, CDC916, CDC926, CDC936 (4) Applied in sets a.o. FW14, FW15, FW36, FW56

SYMPTOM:Introduction of turntable support ring on CDM12.1

CURE:Introduction of turntable support ring on CDM12.1 - To prevent that the turntable of the CDM12.1 mechanism (4822 691 30278) will be pressed down, a turntable support ring has been introduced from week 9532 onwards. The factory label code on this modified CDM12.1 reads 1VU02.

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of other service hints to solve some symptoms are given. A survey of a possible fault cause, how to check and solve this fault is given. SERVICE HINTS CDM12.1 SYMPTOM: NO FUNCTION - gives error - no focus - no T.O.C. CAUSE grease or dirt on lens CHECK visual check with magnifying glass or microscope ACTION Clean lens, see cleaning instructions CAUSE dirt in airgap of actuator CHECK service mode 1: check actuator movement, visual check of actuator. ACTION Remove dirt from airgap. CAUSE sledge switch (3) loose CHECK check if screw (4) has been tightened. ACTION Tighten screw. CAUSE Soldering on Printed Circuit Board of pick-up unit (20) CHECK visual check of soldering ACTION Correct soldering CAUSE dirt on flex connection (13) CHECK visual check of flex connection ACTION Clean flex connections CAUSE glue on slide path of pick-up unit. CHECK visual check of slide path. ACTION Remove glue from slide path. SYMPTOM CD STOPS IN PLAY MODE -stops after a while -stops playing CAUSE burr on gear-wheel(6) CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM NOISE DURING SLED MOVEMENT. CAUSE gear-wheel (6) damaged. CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM DOES NOT PLAY END OF DISC CAUSE gear-wheel (6) badly moulded CHECK visual check of gear-wheel ACTION Replace gear-wheel. Service code: 4822 522 33537 CAUSE rubber tulle (10) poorly assembled CHECK visual check tulle position. ACTION Correct position. CAUSE speedfix (12) poorly assembled. CHECK visual check speedfix position. ACTION Correct position. CAUSE glue on slide path CHECK visual check of slide path ACTION Remove glue. SYMPTOM NO T.O.C. (Table of contents) RATTLING NOISE CAUSE rubber tulle (9) poorly assembled. CHECK visual check tulle position ACTION Correct position. CAUSE speedfix (11) poorly assembled. CHECK visual check speedfix position ACTION Correct position. (..) : item number in exploded view of CDM. In the next the item numbers with service codenumbers are stated. Item Service codenumbedescription 1..204822 691 30278 CDM12.1 complete 34822 277 11466 Slide switch 64822 522 33537 gear-wheel 74822 361 30457 sledge motor

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Cassette part inoperative CD; drawer stucks sometimes

CURE:Check supply transistor T7309, and drawer switch S1813.

SYMPTOM:Both decks total inoperative.

CURE:Check supply transistor T7309.

SYMPTOM:Cassette decks inoperative.

CURE:Check power supply transistor T7309

SYMPTOM:Loudspeaker output inoperative.

CURE:Check both endstage IC's. (4822 209 73356).

SYMPTOM:Service hint

CURE:Service hint In case sets are brought-in with a defective transistor T7309 the circuit can be adapted by adding two resistors and two diodes as illustrated in the figure. The circuit will be adapted in productionsets. A = resistor 2.2 Ohm 0.5 W B = resistor 220 Ohm 0.5 W C = D = diode 1N4002 See figure

SYMPTOM:Correction Partslist

CURE:Correction Partslist Top cover item 436 was coded 4822 691 20741 but the service order number should read: 4822 426 60633.

SYMPTOM:Spare part information

CURE:Spare part information The clamping block (for mounting the Record Player dust cover) service code: 4822 417 10631 previous consists of a clamping block and hinge pen is now separated into two parts. a) Clamping block service code: 4822 417 10631 b) Pen service code: 4822 535 93499 Due to this change the undermentioned position nos. are changed to the new code. Pos 446 - AS305, AS9300 Pos 439 - AS405, TS450, AS9400, AS9402, AS9410, AS9412 Pos 437 - AS505, AS9500, AS9510 Pos 443 - AS9406, AS9408, AS9416, AS9418, AS9506, AS9516

SYMPTOM:CD cannot start-up or is humming.

CURE:CAUSE: The voltage regulator, MCT7805CT supplied by manufacturer has been found to oscillate at its output. This can be seen on a scope as an oscillation (as high as 2V peak-to-peak approx.0.4MHz) superposed onto the 5V dc. The fault is due to supplier's in-house IC fabrication process - internal compensation capacitor is not connected. Add capacitor 0.47uF (4822 124 41407) across the output terminal and ground as close as possible to the IC. REMARKS : The affected ICs batches date between week 9402 up to 9427 although IC fabrication process was improved in week 9425.New Test Program to screen out defective IC was implemented by the Supplier in week 9430. The batch week code can be identify by: x x x 4 0 2 ¦ + week code

SYMPTOM:Totally inoperative, only volume led is on.

CURE:Check IC7313 (4822 209 73356).

SYMPTOM:Whistling sound (zooming sound) of ¸ 500Hz is audible during play.

CURE:Whistling sound (zooming sound) ofÐQ 500Hz is audible during play. In worst case skip tracks will happen and the audio output is interrupted.This phenomenon occurs especially at low temperature and when playing thin disc. This is caused by oscillating of CD mechanism CDM 12.1 Replace the existing disc clamper assembly by an improved one (service code number: 4822 691 30358) which is heavier and prevents CDM12.1 to oscillate. REMARKS : Full implementation of the improved disc clamper assembly in production from week 9442 onwards.The set can be recognized by: ModelSerial no.Introduction AS440RZ 01 ....wk 9443 AS540RZ 01 ....wk 9443

SYMPTOM:Crackling sound from CD.

CURE:Check decoder IC 7102 (temperature sensitive?) 4822 209 30388.

SYMPTOM:CD gives NO DISC indication.

CURE:Check CDM (4822 691 30278).

SYMPTOM:CD turns for a second and stops.

CURE:Check decoder IC7102 (4822 209 30388).

SYMPTOM:Cassette speed is changing constantly.

CURE:Check connection between capacitor C2793 and jumper 9784

SYMPTOM:CD does not start-up or is humming.

CURE:This fault is caused by the voltage regulator, MCT7805CT oscillates at its output stage. This can be seen on oscilloscope as an oscillation (with 2V peak-to-peak, approx. 0.4 MHz) superposed onto the 5V dc. To solve this fault add a capacitor of 0.47uF (4822 124 41407) across the output terminal and ground as close as possible to the IC. REMARKS : The affected IC batches date between week 9402 up to 9430. The batch week code can be identified by: x x x 4 0 2 ¦ + week code

SYMPTOM:Codenumber information

CURE:Codenumber information Button set deck A, pos. 431 is 4822 410 62621

SYMPTOM:Spare part information

CURE:Spare part information The short-loader kit contains the parts needed for repair. Use all parts to prevent a repeat. Pos. 202 4833 522 33464 Pos. 213 4822 532 52573 Pos. 204 4822 522 33465 Pos. 216 4822 444 40727 Pos. 208 4822 528 70851 Pos. 209 4822 528 70852 in case of damaged 202 and 204

SYMPTOM:Introduction of turntable support ring on CDM12.1

CURE:Introduction of turntable support ring on CDM12.1 - To prevent that the turntable of the CDM12.1 mechanism (4822 691 30278) will be pressed down, a turntable support ring has been introduced from week 9532 onwards. The factory label code on this modified CDM12.1 reads 1VU02.

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of known fieldproblems (symptom) and the repair hints are given. In case the hint has been published already the publication has been given in column 'published'. Furthermore the survey shows the corrective actions with their introduction dates (production week) and the way to recognize the modified CDM (see column 'change code'). SURVEY FIELDPROBLEMS CDM12.1 SYMPTOM Sledge motor loose PUBLISHED no SERVICE HINTFix sledge motor with double sided adhesive tape of 0.1 mm. CORRECTIVE ACTION Implementation of double sided adhesive tape to glue the motor. CHANGE CODE 1 SV03 PRODUCTION WEEK 9434 SYMPTOM Turntable loose PUBLISHED no SERVICE HINTReplace CDM mechanism; CDM12.1 is available with 4822 691 30278 CORRECTIVE ACTION 100% check of CDM CHANGE CODE unchanged PRODUCTION WEEK 9440 CORRECTIVE ACTION 2 extra buffers on top of packaging. Gluing process improved. CHANGE CODE unchanged PRODUCTION WEEK 9445 SYMPTOM Zooming sound PUBLISHED Newsletter 54, 55, 57. SERVICE HINT a) Replace magnet clamper by a new clamper with an extra weight. short loader (1): 4822 691 30358. cd loader (2): 4822 691 30358. cdc 5 disc changer (3): 4822 532 52655. CORRECTIVE ACTION Introduction of clamper with additional weight. CHANGE CODE unchanged PRODUCTION WEEK 9445 CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9506 SERVICE HINT (b)For the cdc 7 disc changer module (4) a heavier clamper has been applied, the zooming sound complaint is not expected. In case of zooming sound replace CDM12.1 (4822 691 30278). CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9510 (1) Applied in sets a.o. AS440, AS445, AS450, AS455, AS540, AS545, AS550, AZ8640, CCD66, FW17, FW24, FW26, FW46, FW47, FW68 (2) Applied in sets a.o. CD163, CD165, CD690, CD692, CD710, CD720, CD721, CD731, CD732, CD733, CD740, CD750, CD911, CD910, CD920, CD921, FW26 (3) Applied in sets a.o. AS640, CDC263, CDC265, CDC741, CDC745, CDC751, CDC794, CDC796, CDC916, CDC926, CDC936 (4) Applied in sets a.o. FW14, FW15, FW36, FW56

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of other service hints to solve some symptoms are given. A survey of a possible fault cause, how to check and solve this fault is given. SERVICE HINTS CDM12.1 SYMPTOM: NO FUNCTION - gives error - no focus - no T.O.C. CAUSE grease or dirt on lens CHECK visual check with magnifying glass or microscope ACTION Clean lens, see cleaning instructions CAUSE dirt in airgap of actuator CHECK service mode 1: check actuator movement, visual check of actuator. ACTION Remove dirt from airgap. CAUSE sledge switch (3) loose CHECK check if screw (4) has been tightened. ACTION Tighten screw. CAUSE Soldering on Printed Circuit Board of pick-up unit (20) CHECK visual check of soldering ACTION Correct soldering CAUSE dirt on flex connection (13) CHECK visual check of flex connection ACTION Clean flex connections CAUSE glue on slide path of pick-up unit. CHECK visual check of slide path. ACTION Remove glue from slide path. SYMPTOM CD STOPS IN PLAY MODE -stops after a while -stops playing CAUSE burr on gear-wheel(6) CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM NOISE DURING SLED MOVEMENT. CAUSE gear-wheel (6) damaged. CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM DOES NOT PLAY END OF DISC CAUSE gear-wheel (6) badly moulded CHECK visual check of gear-wheel ACTION Replace gear-wheel. Service code: 4822 522 33537 CAUSE rubber tulle (10) poorly assembled CHECK visual check tulle position. ACTION Correct position. CAUSE speedfix (12) poorly assembled. CHECK visual check speedfix position. ACTION Correct position. CAUSE glue on slide path CHECK visual check of slide path ACTION Remove glue. SYMPTOM NO T.O.C. (Table of contents) RATTLING NOISE CAUSE rubber tulle (9) poorly assembled. CHECK visual check tulle position ACTION Correct position. CAUSE speedfix (11) poorly assembled. CHECK visual check speedfix position ACTION Correct position. (..) : item number in exploded view of CDM. In the next the item numbers with service codenumbers are stated. Item Service codenumbedescription 1..204822 691 30278 CDM12.1 complete 34822 277 11466 Slide switch 64822 522 33537 gear-wheel 74822 361 30457 sledge motor

SYMPTOM:Codenumber information

CURE:Codenumber information Button set deck B, pos. 426 is 4822 410 62619

SYMPTOM:Service Manual correction

CURE:Service Manual correction - Service Manual AS540/21G, AS545/21G/30G (4822 725 24939) Electrical Partslist correction on page 69 Coils itemwas published should read 58604822 543 003764822 242 81151 Quartz 16.934 MHz Service Manual AS540/20G/20R/22G/25G (4822 725 24936) Electrical Partslist correction on page 75 Coils itemwas published should read 58604822 543 003764822 242 81151 Quartz 16.934 MHz

SYMPTOM:Service Manual correction

CURE:Service Manual correction - Service Manual AS540/21G, AS545/21G/30G (4822 725 24939) Electrical Partslist correction on page 69 Coils itemwas published should read 58604822 543 003764822 242 81151 Quartz 16.934 MHz Service Manual AS540/20G/20R/22G/25G (4822 725 24936) Electrical Partslist correction on page 75 Coils itemwas published should read 58604822 543 003764822 242 81151 Quartz 16.934 MHz

SYMPTOM:Service Manual correction

CURE:Service Manual correction - Service Manual AS540/21G, AS545/21G/30G (4822 725 24939) Electrical Partslist correction on page 69 Coils itemwas published should read 58604822 543 003764822 242 81151 Quartz 16.934 MHz Service Manual AS540/20G/20R/22G/25G (4822 725 24936) Electrical Partslist correction on page 75 Coils itemwas published should read 58604822 543 003764822 242 81151 Quartz 16.934 MHz

SYMPTOM:Service Manual correction

CURE:Service Manual correction - Service Manual AS540/21G, AS545/21G/30G (4822 725 24939) Electrical Partslist correction on page 69 Coils itemwas published should read 58604822 543 003764822 242 81151 Quartz 16.934 MHz Service Manual AS540/20G/20R/22G/25G (4822 725 24936) Electrical Partslist correction on page 75 Coils itemwas published should read 58604822 543 003764822 242 81151 Quartz 16.934 MHz

SYMPTOM:Service Manual correction

CURE:Service Manual correction - Service Manual AS540/21G, AS545/21G/30G (4822 725 24939) Electrical Partslist correction on page 69 Coils itemwas published should read 58604822 543 003764822 242 81151 Quartz 16.934 MHz Service Manual AS540/20G/20R/22G/25G (4822 725 24936) Electrical Partslist correction on page 75 Coils itemwas published should read 58604822 543 003764822 242 81151 Quartz 16.934 MHz

SYMPTOM:Correction to Service Manual

CURE:Correction to Service Manual 4822 725 24929 and 4822 725 24936. On page 74 the codenumbers for the button sets of the tape decks are mixed up. Correct is: pos.codenumberdescription 426 4822 410 62619Button set deck B 431 4822 410 62621Button set deck A

SYMPTOM:CD Drawer does not open/close because items 202 and 204 are damaged.

CURE:The root cause of the problem is the insufficient guidance of the drawer that can jump over the gear wheel 202, such that the drawer cannot be closed completely.If the drawer is pulled or pushed, the cam gear will be damaged. Two guiding-brackets items 503 and 504 have been added at item 216 (tray). Also the pinion gear 213 has been modified. These actions reduce the risk of misalignment or damage to gear wheel 202 and the cam gear 204 when the CD tray is pulled or pushed. To avoid a repeat-repair, replace following components: pos 202, 4822 522 33464, tooth-wheel tray pos 204, 4822 522 33465, cam-wheel pos 208, 4822 528 70851, idler wheel 1 pos 209, 4822 528 70852, idler wheel 2 pos 213, 4822 532 52573, pignon guiding construction pos 216, 4822 444 40727, tray REMARKS: This information concerns module called Short Loader and ECO Short Loader. These modules have been applied in all above mentioned sets and this phenomenon may occur. This information also refers to newsletter publications issue 64.40; 65.01 and 96.06.05. In newsletter 65.01 was also the typenumber FW33 included. However in this set a 3 disc changer is applied and not the short loader module.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Introduction of turntable support ring on CDM12.1

CURE:Introduction of turntable support ring on CDM12.1 - To prevent that the turntable of the CDM12.1 mechanism (4822 691 30278) will be pressed down, a turntable support ring has been introduced from week 9532 onwards. The factory label code on this modified CDM12.1 reads 1VU02.

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of other service hints to solve some symptoms are given. A survey of a possible fault cause, how to check and solve this fault is given. SERVICE HINTS CDM12.1 SYMPTOM: NO FUNCTION - gives error - no focus - no T.O.C. CAUSE grease or dirt on lens CHECK visual check with magnifying glass or microscope ACTION Clean lens, see cleaning instructions CAUSE dirt in airgap of actuator CHECK service mode 1: check actuator movement, visual check of actuator. ACTION Remove dirt from airgap. CAUSE sledge switch (3) loose CHECK check if screw (4) has been tightened. ACTION Tighten screw. CAUSE Soldering on Printed Circuit Board of pick-up unit (20) CHECK visual check of soldering ACTION Correct soldering CAUSE dirt on flex connection (13) CHECK visual check of flex connection ACTION Clean flex connections CAUSE glue on slide path of pick-up unit. CHECK visual check of slide path. ACTION Remove glue from slide path. SYMPTOM CD STOPS IN PLAY MODE -stops after a while -stops playing CAUSE burr on gear-wheel(6) CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM NOISE DURING SLED MOVEMENT. CAUSE gear-wheel (6) damaged. CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM DOES NOT PLAY END OF DISC CAUSE gear-wheel (6) badly moulded CHECK visual check of gear-wheel ACTION Replace gear-wheel. Service code: 4822 522 33537 CAUSE rubber tulle (10) poorly assembled CHECK visual check tulle position. ACTION Correct position. CAUSE speedfix (12) poorly assembled. CHECK visual check speedfix position. ACTION Correct position. CAUSE glue on slide path CHECK visual check of slide path ACTION Remove glue. SYMPTOM NO T.O.C. (Table of contents) RATTLING NOISE CAUSE rubber tulle (9) poorly assembled. CHECK visual check tulle position ACTION Correct position. CAUSE speedfix (11) poorly assembled. CHECK visual check speedfix position ACTION Correct position. (..) : item number in exploded view of CDM. In the next the item numbers with service codenumbers are stated. Item Service codenumbedescription 1..204822 691 30278 CDM12.1 complete 34822 277 11466 Slide switch 64822 522 33537 gear-wheel 74822 361 30457 sledge motor

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of known fieldproblems (symptom) and the repair hints are given. In case the hint has been published already the publication has been given in column 'published'. Furthermore the survey shows the corrective actions with their introduction dates (production week) and the way to recognize the modified CDM (see column 'change code'). SURVEY FIELDPROBLEMS CDM12.1 SYMPTOM Sledge motor loose PUBLISHED no SERVICE HINTFix sledge motor with double sided adhesive tape of 0.1 mm. CORRECTIVE ACTION Implementation of double sided adhesive tape to glue the motor. CHANGE CODE 1 SV03 PRODUCTION WEEK 9434 SYMPTOM Turntable loose PUBLISHED no SERVICE HINTReplace CDM mechanism; CDM12.1 is available with 4822 691 30278 CORRECTIVE ACTION 100% check of CDM CHANGE CODE unchanged PRODUCTION WEEK 9440 CORRECTIVE ACTION 2 extra buffers on top of packaging. Gluing process improved. CHANGE CODE unchanged PRODUCTION WEEK 9445 SYMPTOM Zooming sound PUBLISHED Newsletter 54, 55, 57. SERVICE HINT a) Replace magnet clamper by a new clamper with an extra weight. short loader (1): 4822 691 30358. cd loader (2): 4822 691 30358. cdc 5 disc changer (3): 4822 532 52655. CORRECTIVE ACTION Introduction of clamper with additional weight. CHANGE CODE unchanged PRODUCTION WEEK 9445 CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9506 SERVICE HINT (b)For the cdc 7 disc changer module (4) a heavier clamper has been applied, the zooming sound complaint is not expected. In case of zooming sound replace CDM12.1 (4822 691 30278). CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9510 (1) Applied in sets a.o. AS440, AS445, AS450, AS455, AS540, AS545, AS550, AZ8640, CCD66, FW17, FW24, FW26, FW46, FW47, FW68 (2) Applied in sets a.o. CD163, CD165, CD690, CD692, CD710, CD720, CD721, CD731, CD732, CD733, CD740, CD750, CD911, CD910, CD920, CD921, FW26 (3) Applied in sets a.o. AS640, CDC263, CDC265, CDC741, CDC745, CDC751, CDC794, CDC796, CDC916, CDC926, CDC936 (4) Applied in sets a.o. FW14, FW15, FW36, FW56

SYMPTOM:Spare part information

CURE:Spare part information The clamping block (for mounting the Record Player dust cover) service code: 4822 417 10631 previous consists of a clamping block and hinge pen is now separated into two parts. a)Clamping block service code: 4822 417 10631, item 466 b)Pen service code: 4822 535 93499, item 464

SYMPTOM:Service Manual correction

CURE:Service Manual correction - Service Manual AS540/21G, AS545/21G/30G (4822 725 24939) Electrical Partslist correction on page 69 Coils itemwas published should read 58604822 543 003764822 242 81151 Quartz 16.934 MHz Service Manual AS540/20G/20R/22G/25G (4822 725 24936) Electrical Partslist correction on page 75 Coils itemwas published should read 58604822 543 003764822 242 81151 Quartz 16.934 MHz

SYMPTOM:Service Manual correction

CURE:Service Manual correction - Service Manual AS540/21G, AS545/21G/30G (4822 725 24939) Electrical Partslist correction on page 69 Coils itemwas published should read 58604822 543 003764822 242 81151 Quartz 16.934 MHz Service Manual AS540/20G/20R/22G/25G (4822 725 24936) Electrical Partslist correction on page 75 Coils itemwas published should read 58604822 543 003764822 242 81151 Quartz 16.934 MHz

SYMPTOM:CD Drawer does not open/close because items 202 and 204 are damaged.

CURE:The root cause of the problem is the insufficient guidance of the drawer that can jump over the gear wheel 202, such that the drawer cannot be closed completely.If the drawer is pulled or pushed, the cam gear will be damaged. Two guiding-brackets items 503 and 504 have been added at item 216 (tray). Also the pinion gear 213 has been modified. These actions reduce the risk of misalignment or damage to gear wheel 202 and the cam gear 204 when the CD tray is pulled or pushed. To avoid a repeat-repair, replace following components: pos 202, 4822 522 33464, tooth-wheel tray pos 204, 4822 522 33465, cam-wheel pos 208, 4822 528 70851, idler wheel 1 pos 209, 4822 528 70852, idler wheel 2 pos 213, 4822 532 52573, pignon guiding construction pos 216, 4822 444 40727, tray REMARKS: This information concerns module called Short Loader and ECO Short Loader. These modules have been applied in all above mentioned sets and this phenomenon may occur. This information also refers to newsletter publications issue 64.40; 65.01 and 96.06.05. In newsletter 65.01 was also the typenumber FW33 included. However in this set a 3 disc changer is applied and not the short loader module.

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of other service hints to solve some symptoms are given. A survey of a possible fault cause, how to check and solve this fault is given. SERVICE HINTS CDM12.1 SYMPTOM: NO FUNCTION - gives error - no focus - no T.O.C. CAUSE grease or dirt on lens CHECK visual check with magnifying glass or microscope ACTION Clean lens, see cleaning instructions CAUSE dirt in airgap of actuator CHECK service mode 1: check actuator movement, visual check of actuator. ACTION Remove dirt from airgap. CAUSE sledge switch (3) loose CHECK check if screw (4) has been tightened. ACTION Tighten screw. CAUSE Soldering on Printed Circuit Board of pick-up unit (20) CHECK visual check of soldering ACTION Correct soldering CAUSE dirt on flex connection (13) CHECK visual check of flex connection ACTION Clean flex connections CAUSE glue on slide path of pick-up unit. CHECK visual check of slide path. ACTION Remove glue from slide path. SYMPTOM CD STOPS IN PLAY MODE -stops after a while -stops playing CAUSE burr on gear-wheel(6) CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM NOISE DURING SLED MOVEMENT. CAUSE gear-wheel (6) damaged. CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM DOES NOT PLAY END OF DISC CAUSE gear-wheel (6) badly moulded CHECK visual check of gear-wheel ACTION Replace gear-wheel. Service code: 4822 522 33537 CAUSE rubber tulle (10) poorly assembled CHECK visual check tulle position. ACTION Correct position. CAUSE speedfix (12) poorly assembled. CHECK visual check speedfix position. ACTION Correct position. CAUSE glue on slide path CHECK visual check of slide path ACTION Remove glue. SYMPTOM NO T.O.C. (Table of contents) RATTLING NOISE CAUSE rubber tulle (9) poorly assembled. CHECK visual check tulle position ACTION Correct position. CAUSE speedfix (11) poorly assembled. CHECK visual check speedfix position ACTION Correct position. (..) : item number in exploded view of CDM. In the next the item numbers with service codenumbers are stated. Item Service codenumbedescription 1..204822 691 30278 CDM12.1 complete 34822 277 11466 Slide switch 64822 522 33537 gear-wheel 74822 361 30457 sledge motor

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of known fieldproblems (symptom) and the repair hints are given. In case the hint has been published already the publication has been given in column 'published'. Furthermore the survey shows the corrective actions with their introduction dates (production week) and the way to recognize the modified CDM (see column 'change code'). SURVEY FIELDPROBLEMS CDM12.1 SYMPTOM Sledge motor loose PUBLISHED no SERVICE HINTFix sledge motor with double sided adhesive tape of 0.1 mm. CORRECTIVE ACTION Implementation of double sided adhesive tape to glue the motor. CHANGE CODE 1 SV03 PRODUCTION WEEK 9434 SYMPTOM Turntable loose PUBLISHED no SERVICE HINTReplace CDM mechanism; CDM12.1 is available with 4822 691 30278 CORRECTIVE ACTION 100% check of CDM CHANGE CODE unchanged PRODUCTION WEEK 9440 CORRECTIVE ACTION 2 extra buffers on top of packaging. Gluing process improved. CHANGE CODE unchanged PRODUCTION WEEK 9445 SYMPTOM Zooming sound PUBLISHED Newsletter 54, 55, 57. SERVICE HINT a) Replace magnet clamper by a new clamper with an extra weight. short loader (1): 4822 691 30358. cd loader (2): 4822 691 30358. cdc 5 disc changer (3): 4822 532 52655. CORRECTIVE ACTION Introduction of clamper with additional weight. CHANGE CODE unchanged PRODUCTION WEEK 9445 CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9506 SERVICE HINT (b)For the cdc 7 disc changer module (4) a heavier clamper has been applied, the zooming sound complaint is not expected. In case of zooming sound replace CDM12.1 (4822 691 30278). CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9510 (1) Applied in sets a.o. AS440, AS445, AS450, AS455, AS540, AS545, AS550, AZ8640, CCD66, FW17, FW24, FW26, FW46, FW47, FW68 (2) Applied in sets a.o. CD163, CD165, CD690, CD692, CD710, CD720, CD721, CD731, CD732, CD733, CD740, CD750, CD911, CD910, CD920, CD921, FW26 (3) Applied in sets a.o. AS640, CDC263, CDC265, CDC741, CDC745, CDC751, CDC794, CDC796, CDC916, CDC926, CDC936 (4) Applied in sets a.o. FW14, FW15, FW36, FW56

SYMPTOM:Introduction of turntable support ring on CDM12.1

CURE:Introduction of turntable support ring on CDM12.1 - To prevent that the turntable of the CDM12.1 mechanism (4822 691 30278) will be pressed down, a turntable support ring has been introduced from week 9532 onwards. The factory label code on this modified CDM12.1 reads 1VU02.

SYMPTOM:CD Drawer does not open/close because items 202 and 204 are damaged.

CURE:The root cause of the problem is the insufficient guidance of the drawer that can jump over the gear wheel 202, such that the drawer cannot be closed completely.If the drawer is pulled or pushed, the cam gear will be damaged. Two guiding-brackets items 503 and 504 have been added at item 216 (tray). Also the pinion gear 213 has been modified. These actions reduce the risk of misalignment or damage to gear wheel 202 and the cam gear 204 when the CD tray is pulled or pushed. To avoid a repeat-repair, replace following components: pos 202, 4822 522 33464, tooth-wheel tray pos 204, 4822 522 33465, cam-wheel pos 208, 4822 528 70851, idler wheel 1 pos 209, 4822 528 70852, idler wheel 2 pos 213, 4822 532 52573, pignon guiding construction pos 216, 4822 444 40727, tray REMARKS: This information concerns module called Short Loader and ECO Short Loader. These modules have been applied in all above mentioned sets and this phenomenon may occur. This information also refers to newsletter publications issue 64.40; 65.01 and 96.06.05. In newsletter 65.01 was also the typenumber FW33 included. However in this set a 3 disc changer is applied and not the short loader module.

SYMPTOM:Totally inoperative. Only humming sound from both speaker outputs.

CURE:Check both endstages IC7313 and IC7314 (AN7161N; 4822 209 73356).

SYMPTOM:The CD-part no sound.

CURE:Check decoder IC 7805 (SAA7341GP; 4822 209 30388).

SYMPTOM:Sound on right channel, noise on left channel in CD mode.

CURE:Sound ok when in tuner or tape modes. On checking the audio output from the CD player. The sound was traced back to IC7102(SAA 7341) pin 43 had noise present, pin 60 audio present. Replacing this IC cured the fault.

SYMPTOM:CD skips tracks.

CURE:Check the CDM (4822 691 30278).

SYMPTOM:CD part stops playing after some time.

CURE:Check whether the laser burns weaker after some time. Replace CDM (4822 691 30278).

SYMPTOM:Squeaking sound when playing CD.

CURE:It might be that the turntable motor produces a squeaking sound. Replace RCD (4822 691 30278).

SYMPTOM:Long recovering-time of automatic level control (Recorder Board)

CURE:Phenemenon occurs after strong Audio levels. Change resistor 3727 into 220k (4822 116 52258) and resistor 3731 into 2k2 (4822 116 52256).

SYMPTOM:Does not accept CDs. Does not recognize the amount of CDs inside.

CURE:Check optical transistor T7832 (4822 130 83031).

SYMPTOM:Whistling sound (zooming sound) of +/- 500Hz is audible during play

CURE:The whistling sound (zooming sound) of +/- 500Hz is audible during play. In worst case, skip tracks will happen and the audio output is interrupted. This phenomenon occurs especially at low temperature and when playing a thin disc. This fault is caused by oscillating of CD mechanism CDM 12.1. Replace the existing disc clamper assy (item 91 in exploded view) by an improved one (service code number : 4822 532 52655).

SYMPTOM:When track changing, CD produces a squeaking sound.

CURE:Check CDM motor. Replace CDM (4822 691 30278).

SYMPTOM:The CD drawer does not open complete.

CURE:It might be that arm pos.96 is out of position.

SYMPTOM:Introduction of turntable support ring on CDM12.1

CURE:Introduction of turntable support ring on CDM12.1 - To prevent that the turntable of the CDM12.1 mechanism (4822 691 30278) will be pressed down, a turntable support ring has been introduced from week 9532 onwards. The factory label code on this modified CDM12.1 reads 1VU02.

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of other service hints to solve some symptoms are given. A survey of a possible fault cause, how to check and solve this fault is given. SERVICE HINTS CDM12.1 SYMPTOM: NO FUNCTION - gives error - no focus - no T.O.C. CAUSE grease or dirt on lens CHECK visual check with magnifying glass or microscope ACTION Clean lens, see cleaning instructions CAUSE dirt in airgap of actuator CHECK service mode 1: check actuator movement, visual check of actuator. ACTION Remove dirt from airgap. CAUSE sledge switch (3) loose CHECK check if screw (4) has been tightened. ACTION Tighten screw. CAUSE Soldering on Printed Circuit Board of pick-up unit (20) CHECK visual check of soldering ACTION Correct soldering CAUSE dirt on flex connection (13) CHECK visual check of flex connection ACTION Clean flex connections CAUSE glue on slide path of pick-up unit. CHECK visual check of slide path. ACTION Remove glue from slide path. SYMPTOM CD STOPS IN PLAY MODE -stops after a while -stops playing CAUSE burr on gear-wheel(6) CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM NOISE DURING SLED MOVEMENT. CAUSE gear-wheel (6) damaged. CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM DOES NOT PLAY END OF DISC CAUSE gear-wheel (6) badly moulded CHECK visual check of gear-wheel ACTION Replace gear-wheel. Service code: 4822 522 33537 CAUSE rubber tulle (10) poorly assembled CHECK visual check tulle position. ACTION Correct position. CAUSE speedfix (12) poorly assembled. CHECK visual check speedfix position. ACTION Correct position. CAUSE glue on slide path CHECK visual check of slide path ACTION Remove glue. SYMPTOM NO T.O.C. (Table of contents) RATTLING NOISE CAUSE rubber tulle (9) poorly assembled. CHECK visual check tulle position ACTION Correct position. CAUSE speedfix (11) poorly assembled. CHECK visual check speedfix position ACTION Correct position. (..) : item number in exploded view of CDM. In the next the item numbers with service codenumbers are stated. Item Service codenumbedescription 1..204822 691 30278 CDM12.1 complete 34822 277 11466 Slide switch 64822 522 33537 gear-wheel 74822 361 30457 sledge motor

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of known fieldproblems (symptom) and the repair hints are given. In case the hint has been published already the publication has been given in column 'published'. Furthermore the survey shows the corrective actions with their introduction dates (production week) and the way to recognize the modified CDM (see column 'change code'). SURVEY FIELDPROBLEMS CDM12.1 SYMPTOM Sledge motor loose PUBLISHED no SERVICE HINTFix sledge motor with double sided adhesive tape of 0.1 mm. CORRECTIVE ACTION Implementation of double sided adhesive tape to glue the motor. CHANGE CODE 1 SV03 PRODUCTION WEEK 9434 SYMPTOM Turntable loose PUBLISHED no SERVICE HINTReplace CDM mechanism; CDM12.1 is available with 4822 691 30278 CORRECTIVE ACTION 100% check of CDM CHANGE CODE unchanged PRODUCTION WEEK 9440 CORRECTIVE ACTION 2 extra buffers on top of packaging. Gluing process improved. CHANGE CODE unchanged PRODUCTION WEEK 9445 SYMPTOM Zooming sound PUBLISHED Newsletter 54, 55, 57. SERVICE HINT a) Replace magnet clamper by a new clamper with an extra weight. short loader (1): 4822 691 30358. cd loader (2): 4822 691 30358. cdc 5 disc changer (3): 4822 532 52655. CORRECTIVE ACTION Introduction of clamper with additional weight. CHANGE CODE unchanged PRODUCTION WEEK 9445 CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9506 SERVICE HINT (b)For the cdc 7 disc changer module (4) a heavier clamper has been applied, the zooming sound complaint is not expected. In case of zooming sound replace CDM12.1 (4822 691 30278). CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9510 (1) Applied in sets a.o. AS440, AS445, AS450, AS455, AS540, AS545, AS550, AZ8640, CCD66, FW17, FW24, FW26, FW46, FW47, FW68 (2) Applied in sets a.o. CD163, CD165, CD690, CD692, CD710, CD720, CD721, CD731, CD732, CD733, CD740, CD750, CD911, CD910, CD920, CD921, FW26 (3) Applied in sets a.o. AS640, CDC263, CDC265, CDC741, CDC745, CDC751, CDC794, CDC796, CDC916, CDC926, CDC936 (4) Applied in sets a.o. FW14, FW15, FW36, FW56

SYMPTOM:Spare part information

CURE:Spare part information The 18P flex foil connection cable between connectors 1810 and 1811 (1811 on servo board and 1810 on decoder board) is available with service code number 4822 323 50157.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Whistling sound (zooming sound) of +/- 500Hz is audible during play

CURE:The whistling sound (zooming sound) of +/- 500Hz is audible during play. In worst case, skip tracks will happen and the audio output is interrupted. This phenomenon occurs especially at low temperature and when playing a thin disc. This fault is caused by oscillating of CD mechanism CDM 12.1. Replace the existing disc clamper assy (item 91 in exploded view) by an improved one (service code number : 4822 532 52655).

SYMPTOM:Spare part information

CURE:Spare part information The clamping block (for mounting the Record Player dust cover) service code: 4822 417 10631 previous consists of a clamping block and hinge pen is now separated into two parts. a)Clamping block service code: 4822 417 10631, item 466 b)Pen service code: 4822 535 93499, item 464

SYMPTOM:Introduction of turntable support ring on CDM12.1

CURE:Introduction of turntable support ring on CDM12.1 - To prevent that the turntable of the CDM12.1 mechanism (4822 691 30278) will be pressed down, a turntable support ring has been introduced from week 9532 onwards. The factory label code on this modified CDM12.1 reads 1VU02.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Spare part information

CURE:Spare part information The 18P flex foil connection cable between connectors 1810 and 1811 (1811 on servo board and 1810 on decoder board) is available with service code number 4822 323 50157.

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of known fieldproblems (symptom) and the repair hints are given. In case the hint has been published already the publication has been given in column 'published'. Furthermore the survey shows the corrective actions with their introduction dates (production week) and the way to recognize the modified CDM (see column 'change code'). SURVEY FIELDPROBLEMS CDM12.1 SYMPTOM Sledge motor loose PUBLISHED no SERVICE HINTFix sledge motor with double sided adhesive tape of 0.1 mm. CORRECTIVE ACTION Implementation of double sided adhesive tape to glue the motor. CHANGE CODE 1 SV03 PRODUCTION WEEK 9434 SYMPTOM Turntable loose PUBLISHED no SERVICE HINTReplace CDM mechanism; CDM12.1 is available with 4822 691 30278 CORRECTIVE ACTION 100% check of CDM CHANGE CODE unchanged PRODUCTION WEEK 9440 CORRECTIVE ACTION 2 extra buffers on top of packaging. Gluing process improved. CHANGE CODE unchanged PRODUCTION WEEK 9445 SYMPTOM Zooming sound PUBLISHED Newsletter 54, 55, 57. SERVICE HINT a) Replace magnet clamper by a new clamper with an extra weight. short loader (1): 4822 691 30358. cd loader (2): 4822 691 30358. cdc 5 disc changer (3): 4822 532 52655. CORRECTIVE ACTION Introduction of clamper with additional weight. CHANGE CODE unchanged PRODUCTION WEEK 9445 CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9506 SERVICE HINT (b)For the cdc 7 disc changer module (4) a heavier clamper has been applied, the zooming sound complaint is not expected. In case of zooming sound replace CDM12.1 (4822 691 30278). CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9510 (1) Applied in sets a.o. AS440, AS445, AS450, AS455, AS540, AS545, AS550, AZ8640, CCD66, FW17, FW24, FW26, FW46, FW47, FW68 (2) Applied in sets a.o. CD163, CD165, CD690, CD692, CD710, CD720, CD721, CD731, CD732, CD733, CD740, CD750, CD911, CD910, CD920, CD921, FW26 (3) Applied in sets a.o. AS640, CDC263, CDC265, CDC741, CDC745, CDC751, CDC794, CDC796, CDC916, CDC926, CDC936 (4) Applied in sets a.o. FW14, FW15, FW36, FW56

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of other service hints to solve some symptoms are given. A survey of a possible fault cause, how to check and solve this fault is given. SERVICE HINTS CDM12.1 SYMPTOM: NO FUNCTION - gives error - no focus - no T.O.C. CAUSE grease or dirt on lens CHECK visual check with magnifying glass or microscope ACTION Clean lens, see cleaning instructions CAUSE dirt in airgap of actuator CHECK service mode 1: check actuator movement, visual check of actuator. ACTION Remove dirt from airgap. CAUSE sledge switch (3) loose CHECK check if screw (4) has been tightened. ACTION Tighten screw. CAUSE Soldering on Printed Circuit Board of pick-up unit (20) CHECK visual check of soldering ACTION Correct soldering CAUSE dirt on flex connection (13) CHECK visual check of flex connection ACTION Clean flex connections CAUSE glue on slide path of pick-up unit. CHECK visual check of slide path. ACTION Remove glue from slide path. SYMPTOM CD STOPS IN PLAY MODE -stops after a while -stops playing CAUSE burr on gear-wheel(6) CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM NOISE DURING SLED MOVEMENT. CAUSE gear-wheel (6) damaged. CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM DOES NOT PLAY END OF DISC CAUSE gear-wheel (6) badly moulded CHECK visual check of gear-wheel ACTION Replace gear-wheel. Service code: 4822 522 33537 CAUSE rubber tulle (10) poorly assembled CHECK visual check tulle position. ACTION Correct position. CAUSE speedfix (12) poorly assembled. CHECK visual check speedfix position. ACTION Correct position. CAUSE glue on slide path CHECK visual check of slide path ACTION Remove glue. SYMPTOM NO T.O.C. (Table of contents) RATTLING NOISE CAUSE rubber tulle (9) poorly assembled. CHECK visual check tulle position ACTION Correct position. CAUSE speedfix (11) poorly assembled. CHECK visual check speedfix position ACTION Correct position. (..) : item number in exploded view of CDM. In the next the item numbers with service codenumbers are stated. Item Service codenumbedescription 1..204822 691 30278 CDM12.1 complete 34822 277 11466 Slide switch 64822 522 33537 gear-wheel 74822 361 30457 sledge motor

SYMPTOM:Whistling sound (zooming sound) of +/- 500Hz is audible during play

CURE:The whistling sound (zooming sound) of +/- 500Hz is audible during play. In worst case, skip tracks will happen and the audio output is interrupted. This phenomenon occurs especially at low temperature and when playing a thin disc. This fault is caused by oscillating of CD mechanism CDM 12.1. Replace the existing disc clamper assy (item 91 in exploded view) by an improved one (service code number : 4822 532 52655).

SYMPTOM:Introduction of turntable support ring on CDM12.1

CURE:Introduction of turntable support ring on CDM12.1 - To prevent that the turntable of the CDM12.1 mechanism (4822 691 30278) will be pressed down, a turntable support ring has been introduced from week 9532 onwards. The factory label code on this modified CDM12.1 reads 1VU02.

SYMPTOM:Spare part information

CURE:Spare part information The 18P flex foil connection cable between connectors 1810 and 1811 (1811 on servo board and 1810 on decoder board) is available with service code number 4822 323 50157.

SYMPTOM:Spare part information

CURE:Spare part information The clamping block (for mounting the Record Player dust cover) service code: 4822 417 10631 previous consists of a clamping block and hinge pen is now separated into two parts. a)Clamping block service code: 4822 417 10631, item 466 b)Pen service code: 4822 535 93499, item 464

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of known fieldproblems (symptom) and the repair hints are given. In case the hint has been published already the publication has been given in column 'published'. Furthermore the survey shows the corrective actions with their introduction dates (production week) and the way to recognize the modified CDM (see column 'change code'). SURVEY FIELDPROBLEMS CDM12.1 SYMPTOM Sledge motor loose PUBLISHED no SERVICE HINTFix sledge motor with double sided adhesive tape of 0.1 mm. CORRECTIVE ACTION Implementation of double sided adhesive tape to glue the motor. CHANGE CODE 1 SV03 PRODUCTION WEEK 9434 SYMPTOM Turntable loose PUBLISHED no SERVICE HINTReplace CDM mechanism; CDM12.1 is available with 4822 691 30278 CORRECTIVE ACTION 100% check of CDM CHANGE CODE unchanged PRODUCTION WEEK 9440 CORRECTIVE ACTION 2 extra buffers on top of packaging. Gluing process improved. CHANGE CODE unchanged PRODUCTION WEEK 9445 SYMPTOM Zooming sound PUBLISHED Newsletter 54, 55, 57. SERVICE HINT a) Replace magnet clamper by a new clamper with an extra weight. short loader (1): 4822 691 30358. cd loader (2): 4822 691 30358. cdc 5 disc changer (3): 4822 532 52655. CORRECTIVE ACTION Introduction of clamper with additional weight. CHANGE CODE unchanged PRODUCTION WEEK 9445 CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9506 SERVICE HINT (b)For the cdc 7 disc changer module (4) a heavier clamper has been applied, the zooming sound complaint is not expected. In case of zooming sound replace CDM12.1 (4822 691 30278). CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9510 (1) Applied in sets a.o. AS440, AS445, AS450, AS455, AS540, AS545, AS550, AZ8640, CCD66, FW17, FW24, FW26, FW46, FW47, FW68 (2) Applied in sets a.o. CD163, CD165, CD690, CD692, CD710, CD720, CD721, CD731, CD732, CD733, CD740, CD750, CD911, CD910, CD920, CD921, FW26 (3) Applied in sets a.o. AS640, CDC263, CDC265, CDC741, CDC745, CDC751, CDC794, CDC796, CDC916, CDC926, CDC936 (4) Applied in sets a.o. FW14, FW15, FW36, FW56

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of other service hints to solve some symptoms are given. A survey of a possible fault cause, how to check and solve this fault is given. SERVICE HINTS CDM12.1 SYMPTOM: NO FUNCTION - gives error - no focus - no T.O.C. CAUSE grease or dirt on lens CHECK visual check with magnifying glass or microscope ACTION Clean lens, see cleaning instructions CAUSE dirt in airgap of actuator CHECK service mode 1: check actuator movement, visual check of actuator. ACTION Remove dirt from airgap. CAUSE sledge switch (3) loose CHECK check if screw (4) has been tightened. ACTION Tighten screw. CAUSE Soldering on Printed Circuit Board of pick-up unit (20) CHECK visual check of soldering ACTION Correct soldering CAUSE dirt on flex connection (13) CHECK visual check of flex connection ACTION Clean flex connections CAUSE glue on slide path of pick-up unit. CHECK visual check of slide path. ACTION Remove glue from slide path. SYMPTOM CD STOPS IN PLAY MODE -stops after a while -stops playing CAUSE burr on gear-wheel(6) CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM NOISE DURING SLED MOVEMENT. CAUSE gear-wheel (6) damaged. CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM DOES NOT PLAY END OF DISC CAUSE gear-wheel (6) badly moulded CHECK visual check of gear-wheel ACTION Replace gear-wheel. Service code: 4822 522 33537 CAUSE rubber tulle (10) poorly assembled CHECK visual check tulle position. ACTION Correct position. CAUSE speedfix (12) poorly assembled. CHECK visual check speedfix position. ACTION Correct position. CAUSE glue on slide path CHECK visual check of slide path ACTION Remove glue. SYMPTOM NO T.O.C. (Table of contents) RATTLING NOISE CAUSE rubber tulle (9) poorly assembled. CHECK visual check tulle position ACTION Correct position. CAUSE speedfix (11) poorly assembled. CHECK visual check speedfix position ACTION Correct position. (..) : item number in exploded view of CDM. In the next the item numbers with service codenumbers are stated. Item Service codenumbedescription 1..204822 691 30278 CDM12.1 complete 34822 277 11466 Slide switch 64822 522 33537 gear-wheel 74822 361 30457 sledge motor

SYMPTOM:Erase oscillator interferences with AM stations.

CURE:Dependant on the required AM frequency the erase oscillator circuit, on recorder board, has to be tuned up or down. Therefore change capacitor (item 2783) from 12nF either to 10nF (service code number: 4822 121 41857) or 15nF (service code number: 5322 121 42975) item:value:osc. frequency: 2783 12nF63.3 kHz (original) 2783 10nF65.6 kHz 2783 15nF61.7 kHz

SYMPTOM:Whistling sound (zooming sound) of +/- 500Hz is audible during play

CURE:The whistling sound (zooming sound) of +/- 500Hz is audible during play. In worst case, skip tracks will happen and the audio output is interrupted. This phenomenon occurs especially at low temperature and when playing a thin disc. This fault is caused by oscillating of CD mechanism CDM 12.1. Replace the existing disc clamper assy (item 91 in exploded view) by an improved one (service code number : 4822 532 52655).

SYMPTOM:Spare part information

CURE:Spare part information The clamping block (for mounting the Record Player dust cover) service code: 4822 417 10631 previous consists of a clamping block and hinge pen is now separated into two parts. a)Clamping block service code: 4822 417 10631, item 466 b)Pen service code: 4822 535 93499, item 464

SYMPTOM:Introduction of turntable support ring on CDM12.1

CURE:Introduction of turntable support ring on CDM12.1 - To prevent that the turntable of the CDM12.1 mechanism (4822 691 30278) will be pressed down, a turntable support ring has been introduced from week 9532 onwards. The factory label code on this modified CDM12.1 reads 1VU02.

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of known fieldproblems (symptom) and the repair hints are given. In case the hint has been published already the publication has been given in column 'published'. Furthermore the survey shows the corrective actions with their introduction dates (production week) and the way to recognize the modified CDM (see column 'change code'). SURVEY FIELDPROBLEMS CDM12.1 SYMPTOM Sledge motor loose PUBLISHED no SERVICE HINTFix sledge motor with double sided adhesive tape of 0.1 mm. CORRECTIVE ACTION Implementation of double sided adhesive tape to glue the motor. CHANGE CODE 1 SV03 PRODUCTION WEEK 9434 SYMPTOM Turntable loose PUBLISHED no SERVICE HINTReplace CDM mechanism; CDM12.1 is available with 4822 691 30278 CORRECTIVE ACTION 100% check of CDM CHANGE CODE unchanged PRODUCTION WEEK 9440 CORRECTIVE ACTION 2 extra buffers on top of packaging. Gluing process improved. CHANGE CODE unchanged PRODUCTION WEEK 9445 SYMPTOM Zooming sound PUBLISHED Newsletter 54, 55, 57. SERVICE HINT a) Replace magnet clamper by a new clamper with an extra weight. short loader (1): 4822 691 30358. cd loader (2): 4822 691 30358. cdc 5 disc changer (3): 4822 532 52655. CORRECTIVE ACTION Introduction of clamper with additional weight. CHANGE CODE unchanged PRODUCTION WEEK 9445 CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9506 SERVICE HINT (b)For the cdc 7 disc changer module (4) a heavier clamper has been applied, the zooming sound complaint is not expected. In case of zooming sound replace CDM12.1 (4822 691 30278). CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9510 (1) Applied in sets a.o. AS440, AS445, AS450, AS455, AS540, AS545, AS550, AZ8640, CCD66, FW17, FW24, FW26, FW46, FW47, FW68 (2) Applied in sets a.o. CD163, CD165, CD690, CD692, CD710, CD720, CD721, CD731, CD732, CD733, CD740, CD750, CD911, CD910, CD920, CD921, FW26 (3) Applied in sets a.o. AS640, CDC263, CDC265, CDC741, CDC745, CDC751, CDC794, CDC796, CDC916, CDC926, CDC936 (4) Applied in sets a.o. FW14, FW15, FW36, FW56

SYMPTOM:Spare part information

CURE:Spare part information The 18P flex foil connection cable between connectors 1810 and 1811 (1811 on servo board and 1810 on decoder board) is available with service code number 4822 323 50157.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of other service hints to solve some symptoms are given. A survey of a possible fault cause, how to check and solve this fault is given. SERVICE HINTS CDM12.1 SYMPTOM: NO FUNCTION - gives error - no focus - no T.O.C. CAUSE grease or dirt on lens CHECK visual check with magnifying glass or microscope ACTION Clean lens, see cleaning instructions CAUSE dirt in airgap of actuator CHECK service mode 1: check actuator movement, visual check of actuator. ACTION Remove dirt from airgap. CAUSE sledge switch (3) loose CHECK check if screw (4) has been tightened. ACTION Tighten screw. CAUSE Soldering on Printed Circuit Board of pick-up unit (20) CHECK visual check of soldering ACTION Correct soldering CAUSE dirt on flex connection (13) CHECK visual check of flex connection ACTION Clean flex connections CAUSE glue on slide path of pick-up unit. CHECK visual check of slide path. ACTION Remove glue from slide path. SYMPTOM CD STOPS IN PLAY MODE -stops after a while -stops playing CAUSE burr on gear-wheel(6) CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM NOISE DURING SLED MOVEMENT. CAUSE gear-wheel (6) damaged. CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM DOES NOT PLAY END OF DISC CAUSE gear-wheel (6) badly moulded CHECK visual check of gear-wheel ACTION Replace gear-wheel. Service code: 4822 522 33537 CAUSE rubber tulle (10) poorly assembled CHECK visual check tulle position. ACTION Correct position. CAUSE speedfix (12) poorly assembled. CHECK visual check speedfix position. ACTION Correct position. CAUSE glue on slide path CHECK visual check of slide path ACTION Remove glue. SYMPTOM NO T.O.C. (Table of contents) RATTLING NOISE CAUSE rubber tulle (9) poorly assembled. CHECK visual check tulle position ACTION Correct position. CAUSE speedfix (11) poorly assembled. CHECK visual check speedfix position ACTION Correct position. (..) : item number in exploded view of CDM. In the next the item numbers with service codenumbers are stated. Item Service codenumbedescription 1..204822 691 30278 CDM12.1 complete 34822 277 11466 Slide switch 64822 522 33537 gear-wheel 74822 361 30457 sledge motor

SYMPTOM:Spare part information

CURE:Spare part information The 18P flex foil connection cable between connectors 1810 and 1811 (1811 on servo board and 1810 on decoder board) is available with service code number 4822 323 50157.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Introduction of turntable support ring on CDM12.1

CURE:Introduction of turntable support ring on CDM12.1 - To prevent that the turntable of the CDM12.1 mechanism (4822 691 30278) will be pressed down, a turntable support ring has been introduced from week 9532 onwards. The factory label code on this modified CDM12.1 reads 1VU02.

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of known fieldproblems (symptom) and the repair hints are given. In case the hint has been published already the publication has been given in column 'published'. Furthermore the survey shows the corrective actions with their introduction dates (production week) and the way to recognize the modified CDM (see column 'change code'). SURVEY FIELDPROBLEMS CDM12.1 SYMPTOM Sledge motor loose PUBLISHED no SERVICE HINTFix sledge motor with double sided adhesive tape of 0.1 mm. CORRECTIVE ACTION Implementation of double sided adhesive tape to glue the motor. CHANGE CODE 1 SV03 PRODUCTION WEEK 9434 SYMPTOM Turntable loose PUBLISHED no SERVICE HINTReplace CDM mechanism; CDM12.1 is available with 4822 691 30278 CORRECTIVE ACTION 100% check of CDM CHANGE CODE unchanged PRODUCTION WEEK 9440 CORRECTIVE ACTION 2 extra buffers on top of packaging. Gluing process improved. CHANGE CODE unchanged PRODUCTION WEEK 9445 SYMPTOM Zooming sound PUBLISHED Newsletter 54, 55, 57. SERVICE HINT a) Replace magnet clamper by a new clamper with an extra weight. short loader (1): 4822 691 30358. cd loader (2): 4822 691 30358. cdc 5 disc changer (3): 4822 532 52655. CORRECTIVE ACTION Introduction of clamper with additional weight. CHANGE CODE unchanged PRODUCTION WEEK 9445 CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9506 SERVICE HINT (b)For the cdc 7 disc changer module (4) a heavier clamper has been applied, the zooming sound complaint is not expected. In case of zooming sound replace CDM12.1 (4822 691 30278). CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9510 (1) Applied in sets a.o. AS440, AS445, AS450, AS455, AS540, AS545, AS550, AZ8640, CCD66, FW17, FW24, FW26, FW46, FW47, FW68 (2) Applied in sets a.o. CD163, CD165, CD690, CD692, CD710, CD720, CD721, CD731, CD732, CD733, CD740, CD750, CD911, CD910, CD920, CD921, FW26 (3) Applied in sets a.o. AS640, CDC263, CDC265, CDC741, CDC745, CDC751, CDC794, CDC796, CDC916, CDC926, CDC936 (4) Applied in sets a.o. FW14, FW15, FW36, FW56

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of other service hints to solve some symptoms are given. A survey of a possible fault cause, how to check and solve this fault is given. SERVICE HINTS CDM12.1 SYMPTOM: NO FUNCTION - gives error - no focus - no T.O.C. CAUSE grease or dirt on lens CHECK visual check with magnifying glass or microscope ACTION Clean lens, see cleaning instructions CAUSE dirt in airgap of actuator CHECK service mode 1: check actuator movement, visual check of actuator. ACTION Remove dirt from airgap. CAUSE sledge switch (3) loose CHECK check if screw (4) has been tightened. ACTION Tighten screw. CAUSE Soldering on Printed Circuit Board of pick-up unit (20) CHECK visual check of soldering ACTION Correct soldering CAUSE dirt on flex connection (13) CHECK visual check of flex connection ACTION Clean flex connections CAUSE glue on slide path of pick-up unit. CHECK visual check of slide path. ACTION Remove glue from slide path. SYMPTOM CD STOPS IN PLAY MODE -stops after a while -stops playing CAUSE burr on gear-wheel(6) CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM NOISE DURING SLED MOVEMENT. CAUSE gear-wheel (6) damaged. CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM DOES NOT PLAY END OF DISC CAUSE gear-wheel (6) badly moulded CHECK visual check of gear-wheel ACTION Replace gear-wheel. Service code: 4822 522 33537 CAUSE rubber tulle (10) poorly assembled CHECK visual check tulle position. ACTION Correct position. CAUSE speedfix (12) poorly assembled. CHECK visual check speedfix position. ACTION Correct position. CAUSE glue on slide path CHECK visual check of slide path ACTION Remove glue. SYMPTOM NO T.O.C. (Table of contents) RATTLING NOISE CAUSE rubber tulle (9) poorly assembled. CHECK visual check tulle position ACTION Correct position. CAUSE speedfix (11) poorly assembled. CHECK visual check speedfix position ACTION Correct position. (..) : item number in exploded view of CDM. In the next the item numbers with service codenumbers are stated. Item Service codenumbedescription 1..204822 691 30278 CDM12.1 complete 34822 277 11466 Slide switch 64822 522 33537 gear-wheel 74822 361 30457 sledge motor

SYMPTOM:Introduction of turntable support ring on CDM12.1

CURE:Introduction of turntable support ring on CDM12.1 - To prevent that the turntable of the CDM12.1 mechanism (4822 691 30278) will be pressed down, a turntable support ring has been introduced from week 9532 onwards. The factory label code on this modified CDM12.1 reads 1VU02.

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of known fieldproblems (symptom) and the repair hints are given. In case the hint has been published already the publication has been given in column 'published'. Furthermore the survey shows the corrective actions with their introduction dates (production week) and the way to recognize the modified CDM (see column 'change code'). SURVEY FIELDPROBLEMS CDM12.1 SYMPTOM Sledge motor loose PUBLISHED no SERVICE HINTFix sledge motor with double sided adhesive tape of 0.1 mm. CORRECTIVE ACTION Implementation of double sided adhesive tape to glue the motor. CHANGE CODE 1 SV03 PRODUCTION WEEK 9434 SYMPTOM Turntable loose PUBLISHED no SERVICE HINTReplace CDM mechanism; CDM12.1 is available with 4822 691 30278 CORRECTIVE ACTION 100% check of CDM CHANGE CODE unchanged PRODUCTION WEEK 9440 CORRECTIVE ACTION 2 extra buffers on top of packaging. Gluing process improved. CHANGE CODE unchanged PRODUCTION WEEK 9445 SYMPTOM Zooming sound PUBLISHED Newsletter 54, 55, 57. SERVICE HINT a) Replace magnet clamper by a new clamper with an extra weight. short loader (1): 4822 691 30358. cd loader (2): 4822 691 30358. cdc 5 disc changer (3): 4822 532 52655. CORRECTIVE ACTION Introduction of clamper with additional weight. CHANGE CODE unchanged PRODUCTION WEEK 9445 CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9506 SERVICE HINT (b)For the cdc 7 disc changer module (4) a heavier clamper has been applied, the zooming sound complaint is not expected. In case of zooming sound replace CDM12.1 (4822 691 30278). CORRECTIVE ACTION Gluing process of actuator improved. CHANGE CODE 1 VU01 PRODUCTION WEEK 9510 (1) Applied in sets a.o. AS440, AS445, AS450, AS455, AS540, AS545, AS550, AZ8640, CCD66, FW17, FW24, FW26, FW46, FW47, FW68 (2) Applied in sets a.o. CD163, CD165, CD690, CD692, CD710, CD720, CD721, CD731, CD732, CD733, CD740, CD750, CD911, CD910, CD920, CD921, FW26 (3) Applied in sets a.o. AS640, CDC263, CDC265, CDC741, CDC745, CDC751, CDC794, CDC796, CDC916, CDC926, CDC936 (4) Applied in sets a.o. FW14, FW15, FW36, FW56

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Spare part information

CURE:Spare part information The 18P flex foil connection cable between connectors 1810 and 1811 (1811 on servo board and 1810 on decoder board) is available with service code number 4822 323 50157.

SYMPTOM:Service hints on CDM12.1 mechanical disc drive

CURE:Service hints on CDM12.1 mechanical disc drive unit (4822 691 30278) Below a survey of other service hints to solve some symptoms are given. A survey of a possible fault cause, how to check and solve this fault is given. SERVICE HINTS CDM12.1 SYMPTOM: NO FUNCTION - gives error - no focus - no T.O.C. CAUSE grease or dirt on lens CHECK visual check with magnifying glass or microscope ACTION Clean lens, see cleaning instructions CAUSE dirt in airgap of actuator CHECK service mode 1: check actuator movement, visual check of actuator. ACTION Remove dirt from airgap. CAUSE sledge switch (3) loose CHECK check if screw (4) has been tightened. ACTION Tighten screw. CAUSE Soldering on Printed Circuit Board of pick-up unit (20) CHECK visual check of soldering ACTION Correct soldering CAUSE dirt on flex connection (13) CHECK visual check of flex connection ACTION Clean flex connections CAUSE glue on slide path of pick-up unit. CHECK visual check of slide path. ACTION Remove glue from slide path. SYMPTOM CD STOPS IN PLAY MODE -stops after a while -stops playing CAUSE burr on gear-wheel(6) CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM NOISE DURING SLED MOVEMENT. CAUSE gear-wheel (6) damaged. CHECK Visual check of gear-wheel. ACTION Replace gear-wheel. Service code: 4822 522 33537 SYMPTOM DOES NOT PLAY END OF DISC CAUSE gear-wheel (6) badly moulded CHECK visual check of gear-wheel ACTION Replace gear-wheel. Service code: 4822 522 33537 CAUSE rubber tulle (10) poorly assembled CHECK visual check tulle position. ACTION Correct position. CAUSE speedfix (12) poorly assembled. CHECK visual check speedfix position. ACTION Correct position. CAUSE glue on slide path CHECK visual check of slide path ACTION Remove glue. SYMPTOM NO T.O.C. (Table of contents) RATTLING NOISE CAUSE rubber tulle (9) poorly assembled. CHECK visual check tulle position ACTION Correct position. CAUSE speedfix (11) poorly assembled. CHECK visual check speedfix position ACTION Correct position. (..) : item number in exploded view of CDM. In the next the item numbers with service codenumbers are stated. Item Service codenumbedescription 1..204822 691 30278 CDM12.1 complete 34822 277 11466 Slide switch 64822 522 33537 gear-wheel 74822 361 30457 sledge motor

SYMPTOM:Correction Service Manual

CURE:Correction Service Manual - Page 96 The service code number for the Mains cord assembly should read 4822 321 10954 instead of 4822 321 10831.

SYMPTOM:Various failures disappear when the set is opened.

CURE:Some connectors can cause intermittent contact. ( Valid for sets from 9646 until 9712) The wiring assemblies are available under: 4822 232 10395 6 pins connector wire 4822 232 10395 4 + 5 pins conn. wire 4822 323 10396 5 pins connector wire 4822 323 10396 6 + 4 pins conn. wire 4822 323 10405 4 + 3 pins conn. wire 4822 323 10405 4 + 4 pins conn. wire

SYMPTOM:Start playing from stand-by mode

CURE:If the play button is pressed in the stand-by mode, the tape will move, but no sound is audible via the loudspeakers. This problem can be solved by changing resistor 3510 on board from 4.7K to 1k. Modification has been implemented from week 9832 onwards.

SYMPTOM:Addition to parts list:

CURE:Addition to parts list: The service code of item 1290, Loudspeaker Socket in the chapter on Power Board is 4822 265 10967.

SYMPTOM:Codenumber information

CURE:Codenumber information Pos. 5280 transformer is 4822 146 10491 For /22 /25 /34 is 4822 146 10491.

SYMPTOM:Service hint

CURE:Service hint The tape mechanism can be activated even when the set is in standby mode.If the play button is pressed the cassette will move but no sound will be heard via the Loudspeakers.This problem can be prevented by changing 3510 on the Front board from 4k7 to 1k (4822 050 11002). REMARKS : Implemented in all sets from production week 832 onwards.

SYMPTOM:Spare part information

CURE:Spare part information The 3CD Carousel changer module 3CDC DH has been replaced by the 3CDC MG module. This has been published with following Service Informations: A97-164 for FW725C and FW730C A97-165 for FW745C and FW750C A97-166 for FW770P A97-167 for FW780P A97-168 for FW790P A97-169 for FW710C A97-170 for FW365C A97-172 for FW355C A97-173 for FW375P A97-174 for AS660C and AS665C A97-175 for AS760C and AS765C A97-180 for FW352C A97-182 for FW372C A97-183 for FW392C A97-184 for FW395C A97-185 for FW373C A97-187 for AS670C and AS675C A97-188 for AS785C A97-189 for FW315C A97-190 for FW340C In all Service Informations the codenumber for the flex foil, pos 8002, is missing: Service Code for pos. 8002: 4822 320 11974, flex foil 15 pole (length = 190mm) ATTENTION: THIS FLEX FOIL IS NOT COMPATIBLE TO THE FLEX FOIL USED IN THE OLD 3CDC DH MODULE!

SYMPTOM:Codenumber information

CURE:Codenumber information Below are additional spare parts now available for repairing the tape mechanism: Pos no.Service codeDescription ====== ========================= 61 4822 528 11275Flywheel assembly 62 4822 532 13047Washer

SYMPTOM:Various failures disappear when the set is opened.

CURE:Some connectors can cause intermittent contact. ( Valid for sets from 9646 until 9712) The wiring assemblies are available under: 4822 232 10395 6 pins connector wire 4822 232 10395 4 + 5 pins conn. wire 4822 323 10396 5 pins connector wire 4822 323 10396 6 + 4 pins conn. wire 4822 323 10405 4 + 3 pins conn. wire 4822 323 10405 4 + 4 pins conn. wire

SYMPTOM:Start playing from stand-by mode

CURE:If the play button is pressed in the stand-by mode, the tape will move, but no sound is audible via the loudspeakers. This problem can be solved by changing resistor 3510 on board from 4.7K to 1k. Modification has been implemented from week 9832 onwards.

SYMPTOM:Codenumber information

CURE:Codenumber information Below are additional spare parts now available for repairing the tape mechanism: Pos no.Service codeDescription ====== ========================= 61 4822 528 11275Flywheel assembly 62 4822 532 13047Washer

SYMPTOM:Addition to parts list:

CURE:Addition to parts list: The service code of item 1290, Loudspeaker Socket in the chapter on Power Board is 4822 265 10967.

SYMPTOM:Codenumber information

CURE:Codenumber information Pos. 5280 transformer is 4822 146 10491 For /22 /25 /34 is 4822 146 10491.

SYMPTOM:Spare part information

CURE:Spare part information The 3CD Carousel changer module 3CDC DH has been replaced by the 3CDC MG module. This has been published with following Service Informations: A97-164 for FW725C and FW730C A97-165 for FW745C and FW750C A97-166 for FW770P A97-167 for FW780P A97-168 for FW790P A97-169 for FW710C A97-170 for FW365C A97-172 for FW355C A97-173 for FW375P A97-174 for AS660C and AS665C A97-175 for AS760C and AS765C A97-180 for FW352C A97-182 for FW372C A97-183 for FW392C A97-184 for FW395C A97-185 for FW373C A97-187 for AS670C and AS675C A97-188 for AS785C A97-189 for FW315C A97-190 for FW340C In all Service Informations the codenumber for the flex foil, pos 8002, is missing: Service Code for pos. 8002: 4822 320 11974, flex foil 15 pole (length = 190mm) ATTENTION: THIS FLEX FOIL IS NOT COMPATIBLE TO THE FLEX FOIL USED IN THE OLD 3CDC DH MODULE!

SYMPTOM:Service hint

CURE:Service hint The tape mechanism can be activated even when the set is in standby mode.If the play button is pressed the cassette will move but no sound will be heard via the Loudspeakers.This problem can be prevented by changing 3510 on the Front board from 4k7 to 1k (4822 050 11002). REMARKS : Implemented in all sets from production week 832 onwards.

SYMPTOM:In standby mode, the clock display is switched off after a while.

CURE:There is nothing wrong with the set. Switching off the display is part of the “Lower Power Standby Feature”, described in chapter 11 of the Service Manual.

SYMPTOM:In standby mode, the clock display is switched off after a while.

CURE:There is nothing wrong with the set. Switching off the display is part of the “Lower Power Standby Feature”, described in chapter 11 of the Service Manual.

SYMPTOM:After switching to standby, clock disappears after a while (IRIS 313X)

CURE:These sets come with Lower power standby feature (see Service Manual chapter 11) that saves power consumption during standby. In this feature the FTD display (clock display) will be off.

SYMPTOM:Codenumber information

CURE:Codenumber information Below are additional spare parts now available for repairing the tape mechanism: Pos no.Service codeDescription ====== ========================= 61 4822 528 11275Flywheel assembly 62 4822 532 13047Washer

SYMPTOM:Modification

CURE:Modification To solve DBB LED still lighted at OFF mode, change resistor 3525 from 33k to 10k 5% 0,5W4822 116 83864.

SYMPTOM:Modifications

CURE:Modifications - Following changes have been made during production: 1. Capacitor 2251 is changed from 470 uF to 100 uF (4822 124 40225) and is rotated by 90 degrees in layout change from .5 to .6 2. To protect the power amplifier, diodes 6301 and 6351 (4-channel set only) have been changed from 24V type to 22V (4822 130 34441). 3. Layout change from .6 to .7 to replace resistor 3,3R NFR by a fuse. 4. Elcos 2205 and 2214 for 4-channel set are deleted.

SYMPTOM:Spare part information

CURE:Spare part information The 3CD Carousel changer module 3CDC DH has been replaced by the 3CDC MG module. This has been published with following Service Informations: A97-164 for FW725C and FW730C A97-165 for FW745C and FW750C A97-166 for FW770P A97-167 for FW780P A97-168 for FW790P A97-169 for FW710C A97-170 for FW365C A97-172 for FW355C A97-173 for FW375P A97-174 for AS660C and AS665C A97-175 for AS760C and AS765C A97-180 for FW352C A97-182 for FW372C A97-183 for FW392C A97-184 for FW395C A97-185 for FW373C A97-187 for AS670C and AS675C A97-188 for AS785C A97-189 for FW315C A97-190 for FW340C In all Service Informations the codenumber for the flex foil, pos 8002, is missing: Service Code for pos. 8002: 4822 320 11974, flex foil 15 pole (length = 190mm) ATTENTION: THIS FLEX FOIL IS NOT COMPATIBLE TO THE FLEX FOIL USED IN THE OLD 3CDC DH MODULE!

SYMPTOM:Parts list correction for old CDC-3 Module

CURE:Parts list correction for old CDC-3 Module On page 10-12 the service code for Flexfoil 17P is published; this cable is not used in the Module. The correct Flexfoil (15 pins instead of 17 pins) is published on page 10-14 as item 8002 with service codenumber 4822 320 11313. REMARKS : This correction is only applicable for the old CDC-3 Module with PCB printing 3104 113 3109..

SYMPTOM:In standby mode, the clock display is switched off after a while.

CURE:There is nothing wrong with the set. Switching off the display is part of the “Lower Power Standby Feature”, described in chapter 11 of the Service Manual.

SYMPTOM:In standby mode, the clock display is switched off after a while.

CURE:There is nothing wrong with the set. Switching off the display is part of the “Lower Power Standby Feature”, described in chapter 11 of the Service Manual.

SYMPTOM:After switching to standby, clock disappears after a while (IRIS 313X)

CURE:These sets come with Lower power standby feature (see Service Manual chapter 11) that saves power consumption during standby. In this feature the FTD display (clock display) will be off.

SYMPTOM:Spare part information

CURE:Spare part information The 3CD Carousel changer module 3CDC DH has been replaced by the 3CDC MG module. This has been published with following Service Informations: A97-164 for FW725C and FW730C A97-165 for FW745C and FW750C A97-166 for FW770P A97-167 for FW780P A97-168 for FW790P A97-169 for FW710C A97-170 for FW365C A97-172 for FW355C A97-173 for FW375P A97-174 for AS660C and AS665C A97-175 for AS760C and AS765C A97-180 for FW352C A97-182 for FW372C A97-183 for FW392C A97-184 for FW395C A97-185 for FW373C A97-187 for AS670C and AS675C A97-188 for AS785C A97-189 for FW315C A97-190 for FW340C In all Service Informations the codenumber for the flex foil, pos 8002, is missing: Service Code for pos. 8002: 4822 320 11974, flex foil 15 pole (length = 190mm) ATTENTION: THIS FLEX FOIL IS NOT COMPATIBLE TO THE FLEX FOIL USED IN THE OLD 3CDC DH MODULE!

SYMPTOM:Modification

CURE:Modification To solve DBB LED still lighted at OFF mode, change resistor 3525 from 33k to 10k 5% 0,5W4822 116 83864.

SYMPTOM:Parts list correction for old CDC-3 Module

CURE:Parts list correction for old CDC-3 Module On page 10-12 the service code for Flexfoil 17P is published; this cable is not used in the Module. The correct Flexfoil (15 pins instead of 17 pins) is published on page 10-14 as item 8002 with service codenumber 4822 320 11313. REMARKS : This correction is only applicable for the old CDC-3 Module with PCB printing 3104 113 3109..

SYMPTOM:Codenumber information

CURE:Codenumber information Below are additional spare parts now available for repairing the tape mechanism: Pos no.Service codeDescription ====== ========================= 61 4822 528 11275Flywheel assembly 62 4822 532 13047Washer

SYMPTOM:Volume drops after some time.

CURE:Delete resistor 3472. REMARKS : This problem may occurs to sets code RZ... and produced before week 9704.

SYMPTOM:Various failures disappear when the set is opened.

CURE:Some connectors can cause intermittent contact. ( Valid for sets from 9646 until 9712) The wiring assemblies are available under: 4822 232 10395 6 pins connector wire 4822 232 10395 4 + 5 pins conn. wire 4822 323 10396 5 pins connector wire 4822 323 10396 6 + 4 pins conn. wire 4822 323 10405 4 + 3 pins conn. wire 4822 323 10405 4 + 4 pins conn. wire

SYMPTOM:Start playing from stand-by mode

CURE:If the play button is pressed in the stand-by mode, the tape will move, but no sound is audible via the loudspeakers. This problem can be solved by changing resistor 3510 on board from 4.7K to 1k. Modification has been implemented from week 9832 onwards.

SYMPTOM:Spare part information

CURE:Spare part information The 3CD Carousel changer module 3CDC DH has been replaced by the 3CDC MG module. This has been published with following Service Informations: A97-164 for FW725C and FW730C A97-165 for FW745C and FW750C A97-166 for FW770P A97-167 for FW780P A97-168 for FW790P A97-169 for FW710C A97-170 for FW365C A97-172 for FW355C A97-173 for FW375P A97-174 for AS660C and AS665C A97-175 for AS760C and AS765C A97-180 for FW352C A97-182 for FW372C A97-183 for FW392C A97-184 for FW395C A97-185 for FW373C A97-187 for AS670C and AS675C A97-188 for AS785C A97-189 for FW315C A97-190 for FW340C In all Service Informations the codenumber for the flex foil, pos 8002, is missing: Service Code for pos. 8002: 4822 320 11974, flex foil 15 pole (length = 190mm) ATTENTION: THIS FLEX FOIL IS NOT COMPATIBLE TO THE FLEX FOIL USED IN THE OLD 3CDC DH MODULE!

SYMPTOM:Service hint

CURE:Service hint The tape mechanism can be activated even when the set is in standby mode.If the play button is pressed the cassette will move but no sound will be heard via the Loudspeakers.This problem can be prevented by changing 3510 on the Front board from 4k7 to 1k (4822 050 11002). REMARKS : Implemented in all sets from production week 832 onwards.

SYMPTOM:Codenumber information

CURE:Codenumber information Below are additional spare parts now available for repairing the tape mechanism: Pos no.Service codeDescription ====== ========================= 61 4822 528 11275Flywheel assembly 62 4822 532 13047Washer

SYMPTOM:Volume drops after some time.

CURE:Delete resistor 3472. REMARKS : This problem may occurs to sets code RZ... and produced before week 9704.

SYMPTOM:Various failures disappear when the set is opened.

CURE:Some connectors can cause intermittent contact. ( Valid for sets from 9646 until 9712) The wiring assemblies are available under: 4822 232 10395 6 pins connector wire 4822 232 10395 4 + 5 pins conn. wire 4822 323 10396 5 pins connector wire 4822 323 10396 6 + 4 pins conn. wire 4822 323 10405 4 + 3 pins conn. wire 4822 323 10405 4 + 4 pins conn. wire

SYMPTOM:Start playing from stand-by mode

CURE:If the play button is pressed in the stand-by mode, the tape will move, but no sound is audible via the loudspeakers. This problem can be solved by changing resistor 3510 on board from 4.7K to 1k. Modification has been implemented from week 9832 onwards.

SYMPTOM:Codenumber information

CURE:Codenumber information Below are additional spare parts now available for repairing the tape mechanism: Pos no.Service codeDescription ====== ========================= 61 4822 528 11275Flywheel assembly 62 4822 532 13047Washer

SYMPTOM:Spare part information

CURE:Spare part information The 3CD Carousel changer module 3CDC DH has been replaced by the 3CDC MG module. This has been published with following Service Informations: A97-164 for FW725C and FW730C A97-165 for FW745C and FW750C A97-166 for FW770P A97-167 for FW780P A97-168 for FW790P A97-169 for FW710C A97-170 for FW365C A97-172 for FW355C A97-173 for FW375P A97-174 for AS660C and AS665C A97-175 for AS760C and AS765C A97-180 for FW352C A97-182 for FW372C A97-183 for FW392C A97-184 for FW395C A97-185 for FW373C A97-187 for AS670C and AS675C A97-188 for AS785C A97-189 for FW315C A97-190 for FW340C In all Service Informations the codenumber for the flex foil, pos 8002, is missing: Service Code for pos. 8002: 4822 320 11974, flex foil 15 pole (length = 190mm) ATTENTION: THIS FLEX FOIL IS NOT COMPATIBLE TO THE FLEX FOIL USED IN THE OLD 3CDC DH MODULE!

SYMPTOM:Service hint

CURE:Service hint The tape mechanism can be activated even when the set is in standby mode.If the play button is pressed the cassette will move but no sound will be heard via the Loudspeakers.This problem can be prevented by changing 3510 on the Front board from 4k7 to 1k (4822 050 11002). REMARKS : Implemented in all sets from production week 832 onwards.

SYMPTOM:Modification

CURE:Modification To solve DBB LED still lighted at OFF mode, change resistor 3525 from 33k to 10k 5% 0,5W4822 116 83864.

SYMPTOM:Codenumber information

CURE:Codenumber information Below are additional spare parts now available for repairing the tape mechanism: Pos no.Service codeDescription ====== ========================= 61 4822 528 11275Flywheel assembly 62 4822 532 13047Washer

SYMPTOM:Tweeter in loudspeaker box blown.

CURE:CAUSE: Replace the tweeter by an improved type which is available with ordering code is 4822 240 10257.

SYMPTOM:Modification

CURE:Modification To solve DBB LED still lighted at OFF mode, change resistor 3525 from 33k to 10k 5% 0,5W4822 116 83864.

SYMPTOM:Codenumber information

CURE:Codenumber information Below are additional spare parts now available for repairing the tape mechanism: Pos no.Service codeDescription ====== ========================= 61 4822 528 11275Flywheel 62 4822 532 13047Washer

SYMPTOM:Spare part information

CURE:Spare part information The 3CD Carousel changer module 3CDC DH has been replaced by the 3CDC MG module. This has been published with following Service Informations: A97-164 for FW725C and FW730C A97-165 for FW745C and FW750C A97-166 for FW770P A97-167 for FW780P A97-168 for FW790P A97-169 for FW710C A97-170 for FW365C A97-172 for FW355C A97-173 for FW375P A97-174 for AS660C and AS665C A97-175 for AS760C and AS765C A97-180 for FW352C A97-182 for FW372C A97-183 for FW392C A97-184 for FW395C A97-185 for FW373C A97-187 for AS670C and AS675C A97-188 for AS785C A97-189 for FW315C A97-190 for FW340C In all Service Informations the codenumber for the flex foil, pos 8002, is missing: Service Code for pos. 8002: 4822 320 11974, flex foil 15 pole (length = 190mm) ATTENTION: THIS FLEX FOIL IS NOT COMPATIBLE TO THE FLEX FOIL USED IN THE OLD 3CDC DH MODULE!

SYMPTOM:Parts list correction for old CDC-3 Module

CURE:Parts list correction for old CDC-3 Module On page 10-12 the service code for Flexfoil 17P is published; this cable is not used in the Module. The correct Flexfoil (15 pins instead of 17 pins) is published on page 10-14 as item 8002 with service codenumber 4822 320 11313. REMARKS : This correction is only applicable for the old CDC-3 Module with PCB printing 3104 113 3109..

SYMPTOM:Modification

CURE:Modification From week 9836 onwards, the Instruction For Use is changed to 4822 736 16482.

SYMPTOM:Spare part information

CURE:Spare part information The clamping block (for mounting the Record Player dust cover) service code: 4822 417 10631 previous consists of a clamping block and hinge pen is now separated into two parts. a) Clamping block service code: 4822 417 10631 b) Pen service code: 4822 535 93499 Due to this change the undermentioned position nos. are changed to the new code. Pos 446 - AS305, AS9300 Pos 439 - AS405, TS450, AS9400, AS9402, AS9410, AS9412 Pos 437 - AS505, AS9500, AS9510 Pos 443 - AS9406, AS9408, AS9416, AS9418, AS9506, AS9516

SYMPTOM:Service solution

CURE:Service solution Sets produced before week 9010 might show the following phenomenon: If the set is in the play-back mode and the power supply is interrupted (via the power switch) or the set is switched in the stand-by position (via the remote control) the tape can be partially erased. This also can happen if the cassette is recording - protected. To solve this problem the following components should be changed: - Capacitors 2722 and 2772 from 22 µF, 25V into 1 µF, 63V, - Capacitor 2725 from 470 µF 10V into 1000 µF, 10V. Above modification is implemented in the production from week 9010 onwards.

SYMPTOM:Uncomplete erase during recording of chrome casset

CURE:Uncomplete erase during recording of chrome cassette During recording of chrome cassette it may happens that existing information on the cassette tape is not completely erased. The problem is due to not enough erase current. To resolve this problem change capacitors 2783 from 3.3nF to 12nF, 2785 from 12nF to 15nF and 2786 from 220pF to 100pF.

SYMPTOM:Spare part information

CURE:Spare part information The clamping block (for mounting the Record Player dust cover) service code: 4822 417 10631 previous consists of a clamping block and hinge pen is now separated into two parts. a) Clamping block service code: 4822 417 10631 b) Pen service code: 4822 535 93499 Due to this change the undermentioned position nos. are changed to the new code. Pos 446 - AS305, AS9300 Pos 439 - AS405, TS450, AS9400, AS9402, AS9410, AS9412 Pos 437 - AS505, AS9500, AS9510 Pos 443 - AS9406, AS9408, AS9416, AS9418, AS9506, AS9516

SYMPTOM:Service solution

CURE:Service solution Sets produced before week 9010 might show the following phenomenon: If the set is in the play-back mode and the power supply is interrupted (via the power switch) or the set is switched in the stand-by position (via the remote control) the tape can be partially erased. This also can happen if the cassette is recording - protected. To solve this problem the following components should be changed: - Capacitors 2722 and 2772 from 22 µF, 25V into 1 µF, 63V, - Capacitor 2725 from 470 µF 10V into 1000 µF, 10V. Above modification is implemented in the production from week 9010 onwards.

SYMPTOM:Spare part information

CURE:Spare part information The clamping block (for mounting the Record Player dust cover) service code: 4822 417 10631 previous consists of a clamping block and hinge pen is now separated into two parts. a) Clamping block service code: 4822 417 10631 b) Pen service code: 4822 535 93499 Due to this change the undermentioned position nos. are changed to the new code. Pos 446 - AS305, AS9300 Pos 439 - AS405, TS450, AS9400, AS9402, AS9410, AS9412 Pos 437 - AS505, AS9500, AS9510 Pos 443 - AS9406, AS9408, AS9416, AS9418, AS9506, AS9516

SYMPTOM:Spare part information

CURE:Spare part information The clamping block (for mounting the Record Player dust cover) service code: 4822 417 10631 previous consists of a clamping block and hinge pen is now separated into two parts. a) Clamping block service code: 4822 417 10631 b) Pen service code: 4822 535 93499 Due to this change the undermentioned position nos. are changed to the new code. Pos 446 - AS305, AS9300 Pos 439 - AS405, TS450, AS9400, AS9402, AS9410, AS9412 Pos 437 - AS505, AS9500, AS9510 Pos 443 - AS9406, AS9408, AS9416, AS9418, AS9506, AS9516

SYMPTOM:Spare part information

CURE:Spare part information The clamping block (for mounting the Record Player dust cover) service code: 4822 417 10631 previous consists of a clamping block and hinge pen is now separated into two parts. a) Clamping block service code: 4822 417 10631 b) Pen service code: 4822 535 93499 Due to this change the undermentioned position nos. are changed to the new code. Pos 446 - AS305, AS9300 Pos 439 - AS405, TS450, AS9400, AS9402, AS9410, AS9412 Pos 437 - AS505, AS9500, AS9510 Pos 443 - AS9406, AS9408, AS9416, AS9418, AS9506, AS9516

SYMPTOM:No sound on tape deck 1 or 2.

CURE:If pin 12 of IC7551 is disconnected, record dubbing line, the sound comes up.Check/replace T7552 - BC548B on record control line. Faulty transistor may read OK.

SYMPTOM:Spare part information

CURE:Spare part information The clamping block (for mounting the Record Player dust cover) service code: 4822 417 10631 previous consists of a clamping block and hinge pen is now separated into two parts. a) Clamping block service code: 4822 417 10631 b) Pen service code: 4822 535 93499 Due to this change the undermentioned position nos. are changed to the new code. Pos 446 - AS305, AS9300 Pos 439 - AS405, TS450, AS9400, AS9402, AS9410, AS9412 Pos 437 - AS505, AS9500, AS9510 Pos 443 - AS9406, AS9408, AS9416, AS9418, AS9506, AS9516

SYMPTOM:Spare part information

CURE:Spare part information The clamping block (for mounting the Record Player dust cover) service code: 4822 417 10631 previous consists of a clamping block and hinge pen is now separated into two parts. a) Clamping block service code: 4822 417 10631 b) Pen service code: 4822 535 93499 Due to this change the undermentioned position nos. are changed to the new code. Pos 446 - AS305, AS9300 Pos 439 - AS405, TS450, AS9400, AS9402, AS9410, AS9412 Pos 437 - AS505, AS9500, AS9510 Pos 443 - AS9406, AS9408, AS9416, AS9418, AS9506, AS9516

SYMPTOM:Spare part information

CURE:Spare part information The clamping block (for mounting the Record Player dust cover) service code: 4822 417 10631 previous consists of a clamping block and hinge pen is now separated into two parts. a) Clamping block service code: 4822 417 10631 b) Pen service code: 4822 535 93499 Due to this change the undermentioned position nos. are changed to the new code. Pos 446 - AS305, AS9300 Pos 439 - AS405, TS450, AS9400, AS9402, AS9410, AS9412 Pos 437 - AS505, AS9500, AS9510 Pos 443 - AS9406, AS9408, AS9416, AS9418, AS9506, AS9516

SYMPTOM:Spare part information

CURE:Spare part information The clamping block (for mounting the Record Player dust cover) service code: 4822 417 10631 previous consists of a clamping block and hinge pen is now separated into two parts. a) Clamping block service code: 4822 417 10631 b) Pen service code: 4822 535 93499 Due to this change the undermentioned position nos. are changed to the new code. Pos 446 - AS305, AS9300 Pos 439 - AS405, TS450, AS9400, AS9402, AS9410, AS9412 Pos 437 - AS505, AS9500, AS9510 Pos 443 - AS9406, AS9408, AS9416, AS9418, AS9506, AS9516

SYMPTOM:Service solution

CURE:Service solution Sets produced before week 9010 might show the following phenomenon : If the set is in the play-back mode and the power supply is interrupted (via the power switch) or the set is switched in the stand-by position (via the remote control) the tape can be partially erased. This also can happen if the cassette is recording - protected. To solve this problem the following components should be changed : - Capacitors 2722 and 2772 from 22 µF, 25V into 1 µF, 63V, - Capacitor 2725 from 470 µF 10V into 1000 µF, 10V. Above modification is implemented in the production from week 9010 onwards.

SYMPTOM:Spare part information

CURE:Spare part information The clamping block (for mounting the Record Player dust cover) service code: 4822 417 10631 previous consists of a clamping block and hinge pen is now separated into two parts. a) Clamping block service code: 4822 417 10631 b) Pen service code: 4822 535 93499 Due to this change the undermentioned position nos. are changed to the new code. Pos 446 - AS305, AS9300 Pos 439 - AS405, TS450, AS9400, AS9402, AS9410, AS9412 Pos 437 - AS505, AS9500, AS9510 Pos 443 - AS9406, AS9408, AS9416, AS9418, AS9506, AS9516

SYMPTOM:Spare part information

CURE:Spare part information The clamping block (for mounting the Record Player dust cover) service code: 4822 417 10631 previous consists of a clamping block and hinge pen is now separated into two parts. a) Clamping block service code: 4822 417 10631 b) Pen service code: 4822 535 93499 Due to this change the undermentioned position nos. are changed to the new code. Pos 446 - AS305, AS9300 Pos 439 - AS405, TS450, AS9400, AS9402, AS9410, AS9412 Pos 437 - AS505, AS9500, AS9510 Pos 443 - AS9406, AS9408, AS9416, AS9418, AS9506, AS9516

SYMPTOM:Spare part information

CURE:Spare part information The clamping block (for mounting the Record Player dust cover) service code: 4822 417 10631 previous consists of a clamping block and hinge pen is now separated into two parts. a) Clamping block service code: 4822 417 10631 b) Pen service code: 4822 535 93499 Due to this change the undermentioned position nos. are changed to the new code. Pos 446 - AS305, AS9300 Pos 439 - AS405, TS450, AS9400, AS9402, AS9410, AS9412 Pos 437 - AS505, AS9500, AS9510 Pos 443 - AS9406, AS9408, AS9416, AS9418, AS9506, AS9516

SYMPTOM:Set shows unexpected and/or unpredictable behaviour.

CURE:Check whether Trade Mode is disabled. To check this, see Frequently Asked Questions, How to disable Trade Mode.

SYMPTOM:How to disable Trade Mode.

CURE:Press POWER OFF.

SYMPTOM:How to enable Trade Mode.

CURE:Switch on set and press following keys simultaneously: PROGRAM + FREQU.UP + POWER ON.

SYMPTOM:Set shows unexpected and/or unpredictable behaviour.

CURE:Check whether Trade Mode is disabled. To check this, see Frequently Asked Questions, How to disable Trade Mode.

SYMPTOM:How to enable Trade Mode.

CURE:Switch on set and press following keys simultaneously: PROGRAM + FREQU.UP + POWER ON.

SYMPTOM:How to disable Trade Mode.

CURE:Press POWER OFF.

SYMPTOM:No stereo reception.

CURE:Check capacitor 1nF of pilot oscillator.

SYMPTOM:No sound from set at all.

CURE:Check diode D6250 in power supply

SYMPTOM:Sometimes no recording.

CURE:Check switch S1702.

SYMPTOM:Hum and hiss at minimum volume are too loud.

CURE:Change following components. 2250, 2255to 4822 126 115921nF 3250, 3252to 4822 116 52219330 ohm 3251, 3253to 4822 116 5220282 ohm 3501to 4822 100 11276Slide VR 50k REMARKS : The changes have been implemented in the production from week 9426 onwards. This publication will be followed by a service information A94-569.

SYMPTOM:Cassette A gives a rattling sound during play mode.

CURE:Deck A out of position by a burr around one of the mounting pins of the front.

SYMPTOM:No sound at all.

CURE:Diode D6250 in power supply is shortcircuited

SYMPTOM:Replacement information

CURE:Replacement information - IC7101 TEA5711NT/N1 has been replaced by TEA5711/N2(4822 209 32746). Accompanying with this change, one resistor 3113 of 180 kOhm must be added parallel to capacitor 2120. REMARKS : New IC used in production from week 9329 onwards. This publication will be followed by a service information.

SYMPTOM:Spare part information

CURE:Spare part information Cloth Speaker Grilles 4822 458 30648 and 4822 458 30649 are no longer available. It is suggested to replaced the cloth grills by Metal Grilles 4822 458 40565 (for 'L') and 4822 458 40566 (for 'R').

SYMPTOM:Modification

CURE:Modification For 4822 691 20853, a cassette deck with motor EG-530-9BH will be delivered. For circuit and components changes please refer to service information A94-555 (4822 725 24576).

SYMPTOM:152 kHz mis-alignment

CURE:152 kHz mis-alignment - In order to solve the problem of 152 kHz mis-alignment in FM stereo mode, the resistor 3102 has been changed to 68k ohm (4822 116 52297).

SYMPTOM:Cracking sound from left speaker on both tape decks.

CURE:Check R3756.

SYMPTOM:Tape deck 1 does immediately switch off after pushing play.

CURE:Lubricate Pos 71

SYMPTOM:Bad sound when playing back deck 1. Speed too low or too high.

CURE:Fault caused by pressure roller arm pos.10 loose on top side. Remount pressure roller.

SYMPTOM:Modification

CURE:Modification For AW7150/11P and AW7250/11P only: The tuning capacitor 2101 is replaced by 4822 125 11104. To obtain optimum alignment, following components have to be changed too : 21165322 122 341073.9pF ±0.5pF N470 21244822 126 142673.3pF ±0.5pF N3300 REMARKS : Changes had been implemented in production from week 9723 onwards.

SYMPTOM:Codenumber information

CURE:Codenumber information The Recording Lever (pos. 503) is now available via service codenumber 4822 402 10786.

SYMPTOM:Service Information

CURE:Service Information - The output pins LED and BIAS of item 8110 are not used. From week 9621 onwards, a 4-pins socket is used in the position of 8110. Consequently resistors 3103 and 3105 are also deleted.

SYMPTOM:Modification

CURE:Modification In order to increase amplification reserve from +4 dB to +6 dB, the resistors 3260 and 3261 have been changed from 47k to 22k. REMARKS : Modification has been implemented in production from production start onwards.

SYMPTOM:Codenumber information

CURE:Codenumber information The Recording Lever (pos. 503) is now available via service codenumber 4822 402 10786.

SYMPTOM:Totally inoperative.

CURE:On checking the power supply it was found that the fuse had blown and the suppresion capacitor across the bridge rectifier had gone short circuit. Replacing these components and the bridge restored operation.

SYMPTOM:SW reception is distorted by an oscillating signal.

CURE:To solve problem of SW oscillation, item 2753 a capacitor of 100nF/25V has been added. Item 2753 has been connected between the cathodes of diodes 6257 and 6259. REMARKS : In revised service manual AW7224/AW7324 (4822 725 24115) this modification has been published already.

SYMPTOM:Service Information

CURE:Service Information - The output pins LED and BIAS of item 8110 are not used. From week 9621 onwards, a 4-pins socket is used in the position of 8110. Consequently resistors 3103 and 3105 are also deleted.

SYMPTOM:Modification

CURE:Modification In order to increase amplification reserve from +4 dB to +6 dB, the resistors 3260 and 3261 have been changed from 47k to 22k. REMARKS : Modification has been implemented in production from production start onwards.

SYMPTOM:Modification

CURE:Modification For AW7150/11P and AW7250/11P only: The tuning capacitor 2101 is replaced by 4822 125 11104. To obtain optimum alignment, following components have to be changed too : 21165322 122 341073.9pF ±0.5pF N470 21244822 126 142673.3pF ±0.5pF N3300 REMARKS : Changes had been implemented in production from week 9723 onwards.

SYMPTOM:Codenumber information

CURE:Codenumber information The Recording Lever (pos. 503) is now available via service codenumber 4822 402 10786.

SYMPTOM:Intermittent loss of tuning information in memory

CURE:It has been found that loss of memory information with the above models may be caused by an intermittent connection to one of the memory backup batteries.On sets where this is a problem it is advisable to check that the raised pip on the positive contact for the lower backup battery lines up with the centre positive stud on the battery. If this is not the case it will be necessary to open the cabinet and reposition the battery contact in the rear moulding.

SYMPTOM:SW reception is distorted by an oscillating signal.

CURE:To solve problem of SW oscillation, item 2753 a capacitor of 100nF/25V has been added. Item 2753 has been connected between the cathodes of diodes 6257 and 6259. REMARKS : In revised service manual AW7224/AW7324 (4822 725 24115) this modification has been published already.

SYMPTOM:Intermittent loss of tuning information in memory

CURE:It has been found that loss of memory information with the above models may be caused by an intermittent connection to one of the memory backup batteries.On sets where this is a problem it is advisable to check that the raised pip on the positive contact for the lower backup battery lines up with the centre positive stud on the battery. If this is not the case it will be necessary to open the cabinet and reposition the battery contact in the rear moulding.

SYMPTOM:Part number correction for cassette deck motor

CURE:Part number correction for cassette deck motor The part number given in the service manual for the cassette deck motor (4822 361 21171) is incorrect. The correct part number is 4822 361 21301.

SYMPTOM:Left hand recorder does not record.

CURE:Check the connector to the R/P head.

SYMPTOM:The right-hand tape deck does stop spontaneously.

CURE:Check whether the play bracket does operate the switch lever correctly. Remount the play bracket.

SYMPTOM:Sometimes record does not function.

CURE:Check Record/Playback switch S3 (4822 276 13346).

SYMPTOM:Tape damages.

CURE:Check spring pos.45.Might be loose.

SYMPTOM:Both tape decks inoperative.

CURE:Check motor belt of both decks. They might be loose at the motor side.

SYMPTOM:The left deck stops playing halfway the tape.

CURE:Check whether there is some plastic burr on pos 1 of deck. It may happen that by the plastic burr pos.38 sometimes gets stuck.

SYMPTOM:Cassette lid does not close.

CURE:Check whether the eject bracket pos 62 is broken. (4822 403 53815).

SYMPTOM:Cassette lid does not open.

CURE:Cassette lid spring might be loose. Remount the spring.

SYMPTOM:Codenumber information

CURE:Codenumber information The cassette deck type TK20FX-SW is now available via service code 4822 691 10493.

SYMPTOM:Modification

CURE:Modification Because of quality improvement and logistic reasons, from week 9448 onwards, the tape deck was changed from TN21ZSW-1245 to TK20FX-SW. REMARKS : For Service information publication of new tape deck, see service information A95-559 (4822 725 25401).

SYMPTOM:The set does sometimes produce a tickingsound from the speakers.

CURE:Check connections of resistor R3540.

SYMPTOM:Correction Service Manual, Electrical partslist:

CURE:Correction Service Manual, Electrical partslist: For AW7550/14, the servicecode of the band switch S1 should read 4822 277 11626.

SYMPTOM:Service Manual, Tape Deck partslist

CURE:Service Manual, Tape Deck partslist - The type number of the motor is changed to M9T90U20-T. Service code is 4822 361 10958. REMARKS : Design changed since production start.

SYMPTOM:Spare part information

CURE:Spare part information The telescopic aerial (4822 303 30399) can no longer be supplied. As replacement 4822 303 30448 is recommended.

SYMPTOM:Spare part information

CURE:Spare part information If the telescopic aerial 4822 303 30423 is not available, it can be replaced by 4822 303 14065.To mount the new aerial, a M3 hexagonal nut is needed.

SYMPTOM:Spare part information

CURE:Spare part information If the telescopic aerial 4822 303 30423 is not available, it can be replaced by 4822 303 14065.To mount the new aerial, a M3 hexagonal nut is needed.

SYMPTOM:Service Manual correction

CURE:Service Manual correction - On page 12, the service code of the R/P head (item 66) should read 4822 249 10494.

SYMPTOM:Service Manual, Elecrical partslist

CURE:Service Manual, Elecrical partslist - L4 of AW7760/11 is changed to fixed inductor 0.47 uH. Service code is 4822 157 10686. REMARKS : Design changed since production start.

SYMPTOM:Spare part information

CURE:Spare part information If the telescopic aerial 4822 303 30423 is not available, it can be replaced by 4822 303 14065.To mount the new aerial, a M3 hexagonal nut is needed.

SYMPTOM:Circuit diagram corrections around IC202

CURE:Circuit diagram corrections around IC202 IC202 contains record amplifiers and automatic level control (ALC) circuitry for both left and right channels.The voltages were measured with a DVM with the set in RECORD mode and no signal input.

SYMPTOM:Partslist

CURE:Partslist - The auto-reverse play back head 4822 249 30154 has been replaced by 4822 249 30198.

SYMPTOM:Partslist

CURE:Partslist - The auto-reverse play back head 4822 249 30154 has been replaced by 4822 249 30198.

SYMPTOM:The CD part shuts off after 2 tracks.

CURE:Check IC302 for temperature dependency.

SYMPTOM:No sound from the CD player. Sometimes OK, when moving the set.

CURE:Check soldering of IC304.

SYMPTOM:Laser does not light up after some time.

CURE:Check connectors of RCD.

SYMPTOM:Modification

CURE:Modification From April 1998 onwards, with factory code starting from KZ019814.., CDM CD94V5 (4822 691 10654) is used in production to supersede the original CD90V1Q.For servicing please refer to Service Information A98-560 (4822 725 26175).

SYMPTOM:Codenumber correction

CURE:Codenumber correction - The service codenumber of the CDM (CD94V5) in service partslist and Service Information A98-560 is wrong.It should be 4822 691 10776.

SYMPTOM:Service Manual, Exploded View diagram.

CURE:Service Manual, Exploded View diagram. The Magnet (4822 526 10659) is not drawn on the exploded view diagram.It is located under item 23 4822 401 11641, Clamper.

SYMPTOM:Modification

CURE:Modification From April 1998 onwards, with factory code starting from KZ019814.., CDM CD94V5 (4822 691 10654) is used in production to supersede the original CD90V1Q.For servicing please refer to Service Information A98-560 (4822 725 26175).

SYMPTOM:Codenumber correction

CURE:Codenumber correction - The service codenumber of the CDM (CD94V5) in service partslist and Service Information A98-560 is wrong.It should be 4822 691 10776.

SYMPTOM:Codenumber correction

CURE:Codenumber correction - The service codenumber of the CDM (CD94V5) in service partslist and Service Information A98-560 is wrong.It should be 4822 691 10776.

SYMPTOM:Modification

CURE:Modification From April 1998 onwards, with factory code starting from KZ019814.., CDM CD94V5 (4822 691 10654) is used in production to supersede the original CD90V1Q.For servicing please refer to Service Information A98-560 (4822 725 26175).

SYMPTOM:supply shortfall of servo IC TDA7073A

CURE:Due to supply shortfall of servo IC TDA7073A, the CD module had to be redesigned for IC TCA0372DP1. The new modules are used in production alternatively. For repair information on new CD modules see Service Information A00-551 (3140 785 22310). REMARKS : Alternative CD modules are used in production from week 0013 onwards.

SYMPTOM:Correction to the Service Manual

CURE:The codenumber for the CD Door Switch is missing. The switch is available with codenumber 4822 278 90739.

SYMPTOM:supply shortfall of servo IC TDA7073A

CURE:Due to supply shortfall of servo IC TDA7073A, the CD module had to be redesigned for IC TCA0372DP1. The new modules are used in production alternatively. For repair information on new CD modules see Service Information A00-551 (3140 785 22310). REMARKS : Alternative CD modules are used in production from week 0013 onwards.

SYMPTOM:The Bracket-Cassette is broken at the support area

CURE:The Bracket-Cassette (item 502 for AZ1009, AZ1010 resp. item 501 for AZ1015) is broken at the support area for the Cassette Door Spring (item 404). Tooling has been modified (increased wall thickness and added radius at the corner). Improved Bracket-Cassettes are available with codenumber 3103 304 64080. REMARKS : Modified parts are used in production from week 9945 onwards. IRIS CODE: 1613 IRIS CODE: 311D

SYMPTOM:CD-drive CD94V5T1 has been replaced by the new type

CURE:CD-drive CD94V5T1 has been replaced by the new type DA114822 691 10747. To adapt the electronic circuitry to the new CD-drive following components have been changed on the Combi Board: 3828 changed from 18k to 68k (4822 116 52297) 3851 changed from 10k to 15k (4822 116 52244) 3853 changed from 15k to 18k (4822 116 52251) 3855 changed from 33k to 27k (4822 116 52264) REMARKS : Modification has been implemented in production from week 9912 onwards. Sets with the new CD-drive are marked with factory change code KT03. This info will be followed by Service Information A99-350 (4822 725 26032).

SYMPTOM:The Bracket-Cassette is broken at the support area

CURE:The Bracket-Cassette (item 502 for AZ1009, AZ1010 resp. item 501 for AZ1015) is broken at the support area for the Cassette Door Spring (item 404). Tooling has been modified (increased wall thickness and added radius at the corner). Improved Bracket-Cassettes are available with codenumber 3103 304 64080. REMARKS : Modified parts are used in production from week 9945 onwards. IRIS CODE: 1613 IRIS CODE: 311D

SYMPTOM:the following parts were added to the service partslist:

CURE:pos code numberarticle description ––––––––––––––––––––––––––––––––––––––––––––– 507 3103 307 96350 button set CD1 lacquered 511 3103 307 96360 button set CD2 lacquered

SYMPTOM:CD-drive CD94V5T1 has been replaced by the new type

CURE:CD-drive CD94V5T1 has been replaced by the new type DA114822 691 10747. To adapt the electronic circuitry to the new CD-drive following components have been changed on the Combi Board: 3828 changed from 18k to 68k (4822 116 52297) 3851 changed from 10k to 15k (4822 116 52244) 3853 changed from 15k to 18k (4822 116 52251) 3855 changed from 33k to 27k (4822 116 52264) REMARKS : Modification has been implemented in production from week 9912 onwards. Sets with the new CD-drive are marked with factory change code KT03. This info will be followed by Service Information A99-350 (4822 725 26032).

SYMPTOM:The Bracket-Cassette is broken at the support area

CURE:The Bracket-Cassette (item 502 for AZ1009, AZ1010 resp. item 501 for AZ1015) is broken at the support area for the Cassette Door Spring (item 404). Tooling has been modified (increased wall thickness and added radius at the corner). Improved Bracket-Cassettes are available with codenumber 3103 304 64080. REMARKS : Modified parts are used in production from week 9945 onwards. IRIS CODE: 1613 IRIS CODE: 311D

SYMPTOM:Correction to the Electrical Partslist:

CURE:Correction to the Electrical Partslist: - The service codenumbers of the Mains transformers have been mixed up. They should read: 4822 146 10877 for /00 and /14 versions 4822 146 11118 for /01 version 4822 146 10876 for /17 version

SYMPTOM:Modification

CURE:Modification During production following modifications have been implemented. 1. To prevent residual images on LCD in tape mode: Resistor 3863 is changed to 470 ohm (4822 116 83883). 2. To improve muting function in tuner search mode: Resistor 3400 is changed to 4.7K (4822 116 52283). 3. To improve sound quality: Capacitors 2301 and 2302 are changed to 22nF (4822 121 70619) Resistors 3303 and 3304 are changed to 820 ohm (4822 116 52231)

SYMPTOM:Modification

CURE:Modification In order to increase the tuner output power, following parts have been changed on the Audio Board: Resistors 3307 and 3308 changed to 150 Ohm (4822 116 83868) Resistors 3595 and 3596 changed to 27k Ohm (4822 116 52264) Resistors 3597 and 3598 replaced by jumpers REMARKS : Modification has been implemented from production start onwards.

SYMPTOM:The mains transformer is defective.

CURE:Replace capacitors C801, C802, C803 and C804 by ceramic capacitors of 0.022uF/63V (4822 122 30103). REMARKS : Modification is introduced in production from week 9633 onwards. When sets produced before week 9633 or the four capacitors are marked with 'AEC' are brought in for repair, we suggest to replace the capacitors.

SYMPTOM:Correction to the Service Manual

CURE:Mechanical Partslist Position number 26 is listed twice. Correct is: 24 4822 410 10634 Band/Function Knob 26 4822 410 10632 Volume Knob

SYMPTOM:supply shortfall of servo IC TDA7073A

CURE:Due to supply shortfall of servo IC TDA7073A, the CD module had to be redesigned for IC TCA0372DP1. The new modules are used in production alternatively. For repair information on new CD modules see Service Information A00-552 (3140 785 22320). REMARKS : Alternative CD modules are used in production from week 0013 onwards.

SYMPTOM:Correction Service Manual, Electrical partslist:

CURE:Correction Service Manual, Electrical partslist: The tuning capacitor is missing.It is available via service code 4822 125 11097.

SYMPTOM:Spare part information

CURE:Spare part information The mains cord set for /17 versions is available with service code 4822 321 10862.

SYMPTOM:Correction Service Manual, Tape deck:

CURE:Correction Service Manual, Tape deck: - The type number of motor should be EG-530YD-9BH and is available via service code 4822 361 21592.

SYMPTOM:Correction Service Manual, mechanical partslist

CURE:Correction Service Manual, mechanical partslist - 4822 526 10625 is the service code of item 35 which is a magnet ring. Item 33 is not a service article.

SYMPTOM:Modification

CURE:Modification From september 1997 onwards, the CDM97MK1 is used. Codenumber is 4822 691 10334. The new diagram is published in A97-589 (4822 725 25647) Factory code KZ04

SYMPTOM:Modification

CURE:Modification From October 1997 onwards, the CD main board was replaced by CD97 module.Also a new Front Board and an additional Regulation Board has been applied.Reference is made to Service Information A97-589 (4822 725 25647). REMARKS : The Factory code of the sets with CD97 module was starting from KZ049740...

SYMPTOM:Modification

CURE:Modification During production, the motor on the tape deck motor changed. The type of the new motor is EG-530AD-2B with service codenumber 4822 361 21599. REMARKS : Both motors EG-530AD-2B and M9T12U24-1 are interchangeable.

SYMPTOM:The mains transformer is defective.

CURE:Replace capacitors C801, C802, C803 and C804 by ceramic capacitors of 0.022uF/63V (4822 122 30103). REMARKS : Modification is introduced in production from week 9633 onwards. When sets produced before week 9633 or the four capacitors are marked with 'AEC' are brought in for repair, we suggest to replace the capacitors.

SYMPTOM:Radio and cassette part inoperative.

CURE:Check diode D604 and resistor R615.

SYMPTOM:CD-player does not start up

CURE:Check whether the doorswitch makes mechanical contact but no electrical contact. Quick action switch pos 59; 4822 278 90739

SYMPTOM:Hum from speakers at all sources.

CURE:Check C614 for interruption.

SYMPTOM:Squeaking sound from right channel.

CURE:Check IC103 (CXD2508AQ).

SYMPTOM:The CD player is inoperative after some time.

CURE:The reset signal is 2.5V, but should be 5V. Check C181.

SYMPTOM:The CD does not find the focus point

CURE:Check connector CN101.

SYMPTOM:The turntable motor starts rotating at maximum speed.

CURE:The voltage at IC103-68,71,72 is just 3 V, but should be 5V. Check IC103.

SYMPTOM:CD SEARCH has no function and replaced by SKIP function.

CURE:When we start the CD and press PLAY button before reading the TOC, there will be possible that the CD SEARCH function will be deleted and be replaced by SKIP function even when the SEARCH button was keep pressing.When the CD is restart, symptom may not be reproduced.

SYMPTOM:Correction to the Service Manual

CURE:Mechanical Partslist Position number 26 is listed twice. Correct is: 24 4822 410 10634 Band/Function Knob 26 4822 410 10632 Volume Knob

SYMPTOM:supply shortfall of servo IC TDA7073A

CURE:Due to supply shortfall of servo IC TDA7073A, the CD module had to be redesigned for IC TCA0372DP1. The new modules are used in production alternatively. For repair information on new CD modules see Service Information A00-552 (3140 785 22320). REMARKS : Alternative CD modules are used in production from week 0013 onwards.

SYMPTOM:Modification

CURE:Modification During production, the motor on the tape deck motor changed. The type of the new motor is EG-530AD-2B with service codenumber 4822 361 21599. REMARKS : Both motors EG-530AD-2B and M9T12U24-1 are interchangeable.

SYMPTOM:Modification

CURE:Modification From October 1997 onwards, the CD main board was replaced by CD97 module.Also a new Front Board and an additional Regulation Board has been applied.Reference is made to Service Information A97-589 (4822 725 25647). REMARKS : The Factory code of the sets with CD97 module was starting from KZ049740...

SYMPTOM:Correction Service Manual, Tape deck:

CURE:Correction Service Manual, Tape deck: - The type number of motor should be EG-530YD-9BH and is available via service code 4822 361 21592.

SYMPTOM:Correction Service Manual, mechanical partslist

CURE:Correction Service Manual, mechanical partslist - 4822 526 10625 is the service code of item 35 which is a magnet ring. Item 33 is not a service article.

SYMPTOM:Correction Service Manual, Electrical partslist:

CURE:Correction Service Manual, Electrical partslist: The tuning capacitor is missing.It is available via service code 4822 125 11097.

SYMPTOM:Spare part information

CURE:Spare part information The mains cord set for /17 versions is available with service code 4822 321 10862.

SYMPTOM:Modification

CURE:Modification From september 1997 onwards, the CDM97MK1 is used. Codenumber is 4822 691 10334. The new diagram is published in A97-589 (4822 725 25647) Factory code KZ04

SYMPTOM:The mains transformer is defective.

CURE:Replace capacitors C801, C802, C803 and C804 by ceramic capacitors of 0.022uF/63V (4822 122 30103). REMARKS : Modification is introduced in production from week 9633 onwards. When sets produced before week 9633 or the four capacitors are marked with 'AEC' are brought in for repair, we suggest to replace the capacitors.

SYMPTOM:CD SEARCH has no function and replaced by SKIP function.

CURE:When we start the CD and press PLAY button before reading the TOC, there will be possible that the CD SEARCH function will be deleted and be replaced by SKIP function even when the SEARCH button was keep pressing.When the CD is restart, symptom may not be reproduced.

SYMPTOM:Correction to the Service Manual

CURE:Mechanical Partslist Position number 26 is listed twice. Correct is: 24 4822 410 10634 Band/Function Knob 26 4822 410 10632 Volume Knob

SYMPTOM:supply shortfall of servo IC TDA7073A

CURE:Due to supply shortfall of servo IC TDA7073A, the CD module had to be redesigned for IC TCA0372DP1. The new modules are used in production alternatively. For repair information on new CD modules see Service Information A00-552 (3140 785 22320). REMARKS : Alternative CD modules are used in production from week 0013 onwards.

SYMPTOM:Modification

CURE:Modification From October 1997 onwards, the CD main board was replaced by CD97 module.Also a new Front Board and an additional Regulation Board has been applied.Reference is made to Service Information A97-589 (4822 725 25647). REMARKS : The Factory code of the sets with CD97 module was starting from KZ049740...

SYMPTOM:Spare part information

CURE:Spare part information The mains cord set for /17 versions is available with service code 4822 321 10862.

SYMPTOM:Modification

CURE:Modification During production, the motor on the tape deck motor changed. The type of the new motor is EG-530AD-2B with service codenumber 4822 361 21599. REMARKS : Both motors EG-530AD-2B and M9T12U24-1 are interchangeable.

SYMPTOM:Correction Service Manual, Tape deck:

CURE:Correction Service Manual, Tape deck: - The type number of motor should be EG-530YD-9BH and is available via service code 4822 361 21592.

SYMPTOM:Correction Service Manual, mechanical partslist

CURE:Correction Service Manual, mechanical partslist - 4822 526 10625 is the service code of item 35 which is a magnet ring. Item 33 is not a service article.

SYMPTOM:Modification

CURE:Modification From september 1997 onwards, the CDM97MK1 is used. Codenumber is 4822 691 10334. The new diagram is published in A97-589 (4822 725 25647) Factory code KZ04

SYMPTOM:Correction Service Manual, Electrical partslist:

CURE:Correction Service Manual, Electrical partslist: The tuning capacitor is missing.It is available via service code 4822 125 11097.

SYMPTOM:Correction to the Service Manual

CURE:Mechanical Partslist Position number 26 is listed twice. Correct is: 24 4822 410 10634 Band/Function Knob 26 4822 410 10632 Volume Knob

SYMPTOM:supply shortfall of servo IC TDA7073A

CURE:Due to supply shortfall of servo IC TDA7073A, the CD module had to be redesigned for IC TCA0372DP1. The new modules are used in production alternatively. For repair information on new CD modules see Service Information A00-552 (3140 785 22320). REMARKS : Alternative CD modules are used in production from week 0013 onwards.

SYMPTOM:Correction Service Manual, mechanical partslist

CURE:Correction Service Manual, mechanical partslist - 4822 526 10625 is the service code of item 35 which is a magnet ring. Item 33 is not a service article.

SYMPTOM:Modification

CURE:Modification During production, the motor on the tape deck motor changed. The type of the new motor is EG-530AD-2B with service codenumber 4822 361 21599. REMARKS : Both motors EG-530AD-2B and M9T12U24-1 are interchangeable.

SYMPTOM:Modification

CURE:Modification From October 1997 onwards, the CD main board was replaced by CD97 module.Also a new Front Board and an additional Regulation Board has been applied.Reference is made to Service Information A97-589 (4822 725 25647). REMARKS : The Factory code of the sets with CD97 module was starting from KZ049740...

SYMPTOM:Modification

CURE:Modification From september 1997 onwards, the CDM97MK1 is used. Codenumber is 4822 691 10334. The new diagram is published in A97-589 (4822 725 25647) Factory code KZ04

SYMPTOM:Correction to the Service Manual

CURE:Mechanical Partslist Position number 26 is listed twice. Correct is: 24 4822 410 10634 Band/Function Knob 26 4822 410 10632 Volume Knob

SYMPTOM:supply shortfall of servo IC TDA7073A

CURE:Due to supply shortfall of servo IC TDA7073A, the CD module had to be redesigned for IC TCA0372DP1. The new modules are used in production alternatively. For repair information on new CD modules see Service Information A00-552 (3140 785 22320). REMARKS : Alternative CD modules are used in production from week 0013 onwards.

SYMPTOM:Modification

CURE:Modification From October 1997 onwards, the CD main board was replaced by CD97 module.Also a new Front Board and an additional Regulation Board has been applied.Reference is made to Service Information A97-589 (4822 725 25647). REMARKS : The Factory code of the sets with CD97 module was starting from KZ049740...

SYMPTOM:Modification

CURE:Modification During production, the motor on the tape deck motor changed. The type of the new motor is EG-530AD-2B with service codenumber 4822 361 21599. REMARKS : Both motors EG-530AD-2B and M9T12U24-1 are interchangeable.

SYMPTOM:Correction Service Manual, mechanical partslist

CURE:Correction Service Manual, mechanical partslist - 4822 526 10625 is the service code of item 35 which is a magnet ring. Item 33 is not a service article.

SYMPTOM:Correction Service Manual, mechanical partslist

CURE:Correction Service Manual, mechanical partslist - 4822 526 10625 is the service code of item 35 which is a magnet ring. Item 33 is not a service article.

SYMPTOM:Modification

CURE:Modification From October 1997 onwards, the CD main board was replaced by CD97 module.Also a new Front Board and an additional Regulation Board has been applied.Reference is made to Service Information A97-589 (4822 725 25647). REMARKS : The Factory code of the sets with CD97 module was starting from KZ049740...

SYMPTOM:Correction Service Manual, mechanical partslist

CURE:Correction Service Manual, mechanical partslist - 4822 526 10625 is the service code of item 35 which is a magnet ring. Item 33 is not a service article.

SYMPTOM:Modification

CURE:Modification From October 1997 onwards, the CD main board was replaced by CD97 module.Also a new Front Board and an additional Regulation Board has been applied.Reference is made to Service Information A97-589 (4822 725 25647). REMARKS : The Factory code of the sets with CD97 module was starting from KZ049740...

SYMPTOM:supply shortfall of servo IC TDA7073A

CURE:Due to supply shortfall of servo IC TDA7073A, the CD module had to be redesigned for IC TCA0372DP1. The new modules are used in production alternatively. For repair information on new CD modules see Service Information A00-553 (3140 785 22330). REMARKS : Alternative CD modules are used in production from week 0013 onwards.

SYMPTOM:supply shortfall of servo IC TDA7073A

CURE:Due to supply shortfall of servo IC TDA7073A, the CD module had to be redesigned for IC TCA0372DP1. The new modules are used in production alternatively. For repair information on new CD modules see Service Information A00-553 (3140 785 22330). REMARKS : Alternative CD modules are used in production from week 0013 onwards.

SYMPTOM:Correction to mechanical partslist

CURE:Correction to mechanical partslist The service codenumber of pos. 407, the Tuning Knob should read 4822 410 11843.

SYMPTOM:supply shortfall of servo IC TDA7073A

CURE:Due to supply shortfall of servo IC TDA7073A, the CD module had to be redesigned for IC TCA0372DP1. The new modules are used in production alternatively. For repair information on new CD modules see Service Information A00-553 (3140 785 22330). REMARKS : Alternative CD modules are used in production from week 0013 onwards.

SYMPTOM:supply shortfall of servo IC TDA7073A

CURE:Due to supply shortfall of servo IC TDA7073A, the CD module had to be redesigned for IC TCA0372DP1. The new modules are used in production alternatively. For repair information on new CD modules see Service Information A00-553 (3140 785 22330). REMARKS : Alternative CD modules are used in production from week 0013 onwards.

SYMPTOM:supply shortfall of servo IC TDA7073A

CURE:Due to supply shortfall of servo IC TDA7073A, the CD module had to be redesigned for IC TCA0372DP1. The new modules are used in production alternatively. For repair information on new CD modules see Service Information A00-553 (3140 785 22330). REMARKS : Alternative CD modules are used in production from week 0013 onwards.

SYMPTOM:supply shortfall of servo IC TDA7073A

CURE:Due to supply shortfall of servo IC TDA7073A, the CD module had to be redesigned for IC TCA0372DP1. The new modules are used in production alternatively. For repair information on new CD modules see Service Information A00-555 (3140 785 22360). REMARKS : Alternative CD modules are used in production from week 0013 onwards.

SYMPTOM:Correction to the Service Manual

CURE:The codenumber of the DBB Knob (item 409) is wrong. It should read 4822 410 12536.

SYMPTOM:supply shortfall of servo IC TDA7073A

CURE:Due to supply shortfall of servo IC TDA7073A, the CD module had to be redesigned for IC TCA0372DP1. The new modules are used in production alternatively. For repair information on new CD modules see Service Information A00-555 (3140 785 22360). REMARKS : Alternative CD modules are used in production from week 0013 onwards.

SYMPTOM:Correction to the Service Manual

CURE:The codenumber of the DBB Knob (item 409) is wrong. It should read 4822 410 12536.

SYMPTOM:supply shortfall of servo IC TDA7073A

CURE:Due to supply shortfall of servo IC TDA7073A, the CD module had to be redesigned for IC TCA0372DP1. The new modules are used in production alternatively. For repair information on new CD modules see Service Information A00-555 (3140 785 22360). REMARKS : Alternative CD modules are used in production from week 0013 onwards.

SYMPTOM:Correction to the Service Manual

CURE:The codenumber of the DBB Knob (item 409) is wrong. It should read 4822 410 12536.

SYMPTOM:supply shortfall of servo IC TDA7073A

CURE:Due to supply shortfall of servo IC TDA7073A, the CD module had to be redesigned for IC TCA0372DP1. The new modules are used in production alternatively. For repair information on new CD modules see Service Information A00-555 (3140 785 22360). REMARKS : Alternative CD modules are used in production from week 0013 onwards.

SYMPTOM:Correction to the Service Manual

CURE:The codenumber of the DBB Knob (item 409) is wrong. It should read 4822 410 12536.

SYMPTOM:following parts have been changed to improve DBB performance:

CURE:Capacitor 2503 and 2504 changed to 68nF (5322 121 42465) REMARKS : Modification has been implemented in production from week 9921onwards.

SYMPTOM:improve the ESD behaviour

CURE:to improve the ESD behaviour, coil 5100 has been changed to 2.2mH (3198 018 12280). REMARKS : Modification is implemented from production start onwards.

SYMPTOM:No display in CD mode at low battery voltage.

CURE:Problem can be solved by changing resistor 3251 from 470 Ohm to 390 Ohm (4822 116 83881). REMARKS : Modification has been implemented in production from week 9850 onwards. IRIS CODE C13X

SYMPTOM:Tuning cord loose because one pulley is loose from its axle.

CURE:The diameter of the centre hole of pulley is 0.2 mm larger than the specification.As a service solution, we suggest to add a fibre washer on the top of pulley and melt the axle with a soldering iron in order to secure the pulley. REMARKS : The mould of the pulley is modified and implemented in production from week 9839 onwards.

SYMPTOM:In order to reduce the distortion of CD-recordings

CURE:In order to reduce the distortion of CD-recordings, following modifications has been implemented in production: 1. 3529 and 3530 are changed to 22K (4822 116 52257) 2. 3578 and 3579 are changed to 22K (4822 116 52257)

SYMPTOM:The system goes in hang-up when switched to CD from TUNER or TAPE.

CURE:On the Front board, add a capacitor 1nF/50V (4822 122 33197) from pin 23 of 7401 to ground. REMARKS : Modification was implemented in production from week 9740 onwards.

SYMPTOM:CD is not functioning

CURE:Check soldering of capacitor item 2836. REMARKS : Capacitor 2836 is fixed in production from week 9819 onwards.

SYMPTOM:No display in CD mode at low battery voltage.

CURE:Problem can be solved by changing resistor 3251 from 470 Ohm to 390 Ohm (4822 116 83881). REMARKS : Modification has been implemented in production from week 9850 onwards. IRIS CODE C13X

SYMPTOM:Tuning cord loose because one pulley is loose from its axle.

CURE:The diameter of the centre hole of pulley is 0.2 mm larger than the specification.As a service solution, we suggest to add a fibre washer on the top of pulley and melt the axle with a soldering iron in order to secure the pulley. REMARKS : The mould of the pulley is modified and implemented in production from week 9839 onwards.

SYMPTOM:parts have been changed to re-adjust the amplification

CURE:following parts have been changed to re-adjust the amplification reserve of CD signal. • Resistors 3302 and 3303 changed to 270R (3198 011 02710) • Resistors 3595 and 3596 changed to 22k (3198 011 02230) • Resistors 3597 and 3598 changed to 15k (3198 011 01530) REMARKS : Modification has been implemented in production from week 9915 onwards.

SYMPTOM:The Cassette Door Spring (pos. 407) looses out easily

CURE:To solve the problem, the shape of the spring has been changed. The code number of the new spring is 3140 111 00620. REMARKS : Modification has been implemented in production from week 9915 onwards.

SYMPTOM:Correction to the Mechanical Partslist:

CURE:Correction to the Mechanical Partslist: - The service codenumber of the Knob-Open (item 439) for Silver versions should read 4822 410 11392.

SYMPTOM:In order to reduce the distortion of CD-recordings

CURE:In order to reduce the distortion of CD-recordings, following modifications has been implemented in production: 1. 3529 and 3530 are changed to 22K (4822 116 52257) 2. 3578 and 3579 are changed to 22K (4822 116 52257)

SYMPTOM:Correction and modification

CURE:Correction and modification - The service code of the CD Drive (item 454) on the exploded view diagram is missing.It should read 4822 691 10587. To improve the CD playability, the motor on the CD Drive is changed to type RF-310T.The service codenumber of the CD Drive becomes 4822 691 10654.To match with this modification, following components on the CD97 board should be changed. 28204822 121 5139947nF 10% 50V 38554822 116 5227133k 5% 0.16W REMARKS : Modification is implemented in production from week 9741 onwards.

SYMPTOM:Codenumber information

CURE:Codenumber information The FFC cable (15-pins) connecting CD light-pen to CD97 board is now available via following service codenumber: pos 18004822 320 12178FFC/15P/65mm

SYMPTOM:Codenumber information

CURE:Codenumber information The Pinch Roller Arm Assembly (items 10 + 11 +12) on the cassette mechanism is now available under service code 4822 528 11189.

SYMPTOM:No display in CD mode at low battery voltage.

CURE:Problem can be solved by changing resistor 3251 from 470 Ohm to 390 Ohm (4822 116 83881). REMARKS : Modification has been implemented in production from week 9850 onwards. IRIS CODE C13X

SYMPTOM:Correction to electrical partslist

CURE:Correction to electrical partslist On the Front board, the service codenumber of IC 7400 was changed to 4822 209 16811. 4822 209 15839 can still be used except for /14 versions.

SYMPTOM:Volume setting is reset to level 11 when power is switched off.

CURE:Problem can be solved by changing capacitor 2401 from 100 uF to 47 uF (4822 124 81286). REMARKS : Modification has been implemented in production from week 9901 onwards. IRIS CODE 2525

SYMPTOM:No display in CD mode at low battery voltage.

CURE:Problem can be solved by changing resistor 3251 from 470 Ohm to 390 Ohm (4822 116 83881). REMARKS : Modification has been implemented in production from week 9850 onwards. IRIS CODE C13X

SYMPTOM:Tuning cord loose because one pulley is loose from its axle.

CURE:The diameter of the centre hole of pulley is 0.2 mm larger than the specification.As a service solution, we suggest to add a fibre washer on the top of pulley and melt the axle with a soldering iron in order to secure the pulley. REMARKS : The mould of the pulley is modified and implemented in production from week 9839 onwards.

SYMPTOM:Correction to mechanical partslist

CURE:Correction to mechanical partslist The codenumber of item 437, the Tray-CD should read 4822 418 10352.

SYMPTOM:CD is not functioning

CURE:Check soldering of capacitor item 2836. REMARKS : Capacitor 2836 is fixed in production from week 9819 onwards.

SYMPTOM:Volume setting is reset to level 11 when power is switched off.

CURE:Problem can be solved by changing capacitor 2401 from 100 uF to 47 uF (4822 124 81286). REMARKS : Modification has been implemented in production from week 9901 onwards. IRIS CODE 2525

SYMPTOM:No display in CD mode at low battery voltage.

CURE:Problem can be solved by changing resistor 3251 from 470 Ohm to 390 Ohm (4822 116 83881). REMARKS : Modification has been implemented in production from week 9850 onwards. IRIS CODE C13X

SYMPTOM:The Cassette Door Spring (pos. 407) looses out easily

CURE:To solve the problem, the shape of the spring has been changed. The code number of the new spring is 3140 111 00620. REMARKS : Modification has been implemented in production from week 9915 onwards.

SYMPTOM:Correction electrical partslist:

CURE:Correction electrical partslist: - On the Audio Board: 22644822 126 135810.22µF 20% 50V 22654822 126 135810.22µF 20% 50V 25964822 121 5138710nF 20% 50V 36664822 116 52175100R5% 0.5W 36674822 116 52175100R5% 0.5W

SYMPTOM:Codenumber information

CURE:Codenumber information The FFC cable (15-pins) connecting CD light-pen to CD97 board is now available via following service codenumber: pos 18004822 320 12178FFC/15P/65mm

SYMPTOM:Remote Control does not work when battery voltage is low.

CURE:Change 3452 from 220 ohm to 33 ohm (4822 116 52191). REMARKS : Modification is implemented in production from week 9836 onwards.

SYMPTOM:No display in CD mode at low battery voltage.

CURE:Problem can be solved by changing resistor 3251 from 470 Ohm to 390 Ohm (4822 116 83881). REMARKS : Modification has been implemented in production from week 9850 onwards. IRIS CODE C13X

SYMPTOM:Correction to electrical partslist

CURE:Correction to electrical partslist On the Front board, the service codenumber of IC 7400 was changed to 4822 209 16811. 4822 209 15839 can still be used except for /14 versions.

SYMPTOM:Remote Control does not work when battery voltage is low.

CURE:Change 3452 from 220 ohm to 33 ohm (4822 116 52191). REMARKS : Modification is implemented in production from week 9836 onwards.

SYMPTOM:CD is not functioning

CURE:Check soldering of capacitor item 2836. REMARKS : Capacitor 2836 is fixed in production from week 9819 onwards.

SYMPTOM:No display in CD mode at low battery voltage.

CURE:Problem can be solved by changing resistor 3251 from 470 Ohm to 390 Ohm (4822 116 83881). REMARKS : Modification has been implemented in production from week 9850 onwards. IRIS CODE C13X

SYMPTOM:The Cassette Door Spring (pos. 407) looses out easily

CURE:To solve the problem, the shape of the spring has been changed. The code number of the new spring is 3140 111 00620. REMARKS : Modification has been implemented in production from week 9915 onwards.

SYMPTOM:Correction and modification

CURE:Correction and modification - The service code of the CD Drive (item 454) on the exploded view diagram is missing.It should read 4822 691 10587. To improve the CD playability, the motor on the CD Drive is changed to type RF-310T.The service codenumber of the CD Drive becomes 4822 691 10654.To match with this modification, following components on the CD97 board should be changed. 28204822 121 5139947nF 10% 50V 38554822 116 5227133k 5% 0.16W REMARKS : Modification is implemented in production from week 9741 onwards.

SYMPTOM:Correction to electrical partslist

CURE:Correction to electrical partslist On the Front board, the service codenumber of IC 7400 was changed to 4822 209 16811. 4822 209 15839 can still be used except for /14 versions.

SYMPTOM:Codenumber information

CURE:Codenumber information The FFC cable (15-pins) connecting CD light-pen to CD97 board is now available via following service codenumber: pos 18004822 320 12178FFC/15P/65mm

SYMPTOM:Correction electrical partslist:

CURE:Correction electrical partslist: - On the Audio Board: 22644822 126 135810.22µF 20% 50V 22654822 126 135810.22µF 20% 50V 25964822 121 5138710nF 20% 50V 36664822 116 52175100R5% 0.5W 36674822 116 52175100R5% 0.5W

SYMPTOM:The Gear Wheels (pos. 202 and 204) are out of position.

CURE:It is recommended to replace the 2 gear wheels and the drawer (pos 216).

SYMPTOM:Modification

CURE:Modification From October 1997 onwards, the CDM (item 1800) of the CD Short Loader was changed from CDM12.1 to VAM1201 (4822 691 10615). When the CDM12.1 is replaced by VAM1201, the Clamper Assy (item 212) has to be changed to 4822 401 11709. REMARKS : The production code of the ECO Short Loader with VAM1201 is KT02.

SYMPTOM:Correction to mechanical partslist

CURE:Correction to mechanical partslist In the Exploded view diagram of tape transport, the code number of item 74, the Eject Hook should be 4822 403 70968.

SYMPTOM:Codenumber information

CURE:Codenumber information The Pinch Roller Arm Assembly (items 10 + 11 +12) on the cassette mechanism is now available under service code 4822 528 11189.

SYMPTOM:CD Drawer does not open/close because items 202 and 204 are damaged.

CURE:The root cause of the problem is the insufficient guidance of the drawer that can jump over the gear wheel 202, such that the drawer cannot be closed completely.If the drawer is pulled or pushed, the cam gear will be damaged. Two guiding-brackets items 503 and 504 have been added at item 216 (tray). Also the pinion gear 213 has been modified. These actions reduce the risk of misalignment or damage to gear wheel 202 and the cam gear 204 when the CD tray is pulled or pushed. To avoid a repeat-repair, replace following components: pos 202, 4822 522 33464, tooth-wheel tray pos 204, 4822 522 33465, cam-wheel pos 208, 4822 528 70851, idler wheel 1 pos 209, 4822 528 70852, idler wheel 2 pos 213, 4822 532 52573, pignon guiding construction pos 216, 4822 444 40727, tray REMARKS: This information concerns module called Short Loader and ECO Short Loader. These modules have been applied in all above mentioned sets and this phenomenon may occur. This information also refers to newsletter publications issue 64.40; 65.01 and 96.06.05. In newsletter 65.01 was also the typenumber FW33 included. However in this set a 3 disc changer is applied and not the short loader module.

SYMPTOM:The Gear Wheels (pos. 202 and 204) are out of position.

CURE:It is recommended to replace the 2 gear wheels and the drawer (pos 216).

SYMPTOM:Correction Service Manual, Mechanical partslist

CURE:Correction Service Manual, Mechanical partslist - The correct Service code number for mains socket IEC reads 4822 265 20318.

SYMPTOM:Spare part information

CURE:Spare part information The short-loader kit contains the parts needed for repair. Use all parts to prevent a repeat. Pos. 202 4833 522 33464 Pos. 213 4822 532 52573 Pos. 204 4822 522 33465 Pos. 216 4822 444 40727 Pos. 208 4822 528 70851 Pos. 209 4822 528 70852 in case of damaged 202 and 204

SYMPTOM:Service Manual, Recorder Module, Electrical partsl

CURE:Service Manual, Recorder Module, Electrical partslist - 2715 and 2722 are changed from 22nF to 33nF to improve ALC distortion at strong signal. 2733 is changed from Tubular type to Mylar capacitor to improve high temperature characteristic of bias modulation. 2732 is changed from 3.3nF to 4.7nF to increase the bias oscillation level. itemservice codedesrciption - 27154822 126 13174Cer Tub. 50V33nF 30% 27224822 126 13174Cer Tub. 50V33nF 30% 27324822 126 11714Cer Tub. 50V 4.7nF 20% 27334822 121 43144Cap Poly 50V22nF 10% REMARKS : Modifications are implemented in production from week 9638 onwards.

SYMPTOM:Correction to mechanical partslist

CURE:Correction to mechanical partslist In the Exploded view diagram of tape transport, the code number of item 74, the Eject Hook should be 4822 403 70968.

SYMPTOM:Modification

CURE:Modification From October 1997 onwards, the CDM (item 1800) of the CD Short Loader was changed from CDM12.1 to VAM1201 (4822 691 10615). When the CDM12.1 is replaced by VAM1201, the Clamper Assy (item 212) has to be changed to 4822 401 11709. REMARKS : The production code of the ECO Short Loader with VAM1201 is KT02.

SYMPTOM:Codenumber information

CURE:Codenumber information The Pinch Roller Arm Assembly (items 10 + 11 +12) on the cassette mechanism is now available under service code 4822 528 11189.

SYMPTOM:CD Drawer does not open/close because items 202 and 204 are damaged.

CURE:The root cause of the problem is the insufficient guidance of the drawer that can jump over the gear wheel 202, such that the drawer cannot be closed completely.If the drawer is pulled or pushed, the cam gear will be damaged. Two guiding-brackets items 503 and 504 have been added at item 216 (tray). Also the pinion gear 213 has been modified. These actions reduce the risk of misalignment or damage to gear wheel 202 and the cam gear 204 when the CD tray is pulled or pushed. To avoid a repeat-repair, replace following components: pos 202, 4822 522 33464, tooth-wheel tray pos 204, 4822 522 33465, cam-wheel pos 208, 4822 528 70851, idler wheel 1 pos 209, 4822 528 70852, idler wheel 2 pos 213, 4822 532 52573, pignon guiding construction pos 216, 4822 444 40727, tray REMARKS: This information concerns module called Short Loader and ECO Short Loader. These modules have been applied in all above mentioned sets and this phenomenon may occur. This information also refers to newsletter publications issue 64.40; 65.01 and 96.06.05. In newsletter 65.01 was also the typenumber FW33 included. However in this set a 3 disc changer is applied and not the short loader module.

SYMPTOM:The Gear Wheels (pos. 202 and 204) are out of position.

CURE:It is recommended to replace the 2 gear wheels and the drawer (pos 216).

SYMPTOM:Codenumber information

CURE:Codenumber information The Pinch Roller Arm Assembly (items 10 + 11 +12) on the cassette mechanism is now available under service code 4822 528 11189.

SYMPTOM:Modification

CURE:Modification For AZ1308/11 only: The tuning capacitor 2101 is replaced by 4822 125 11104. To obtain optimum alignment, following components have to be changed too : 21164822 126 142661 pF ±0.25pF N470 21244822 126 142673.3pF ±0.5pF N3300 REMARKS : Changes had been implemented in production from week 9750 onwards.

SYMPTOM:Correction Service Manual, Mechanical partslist

CURE:Correction Service Manual, Mechanical partslist - The correct Service code number for mains socket IEC reads 4822 265 20318.

SYMPTOM:Spare part information

CURE:Spare part information The short-loader kit contains the parts needed for repair. Use all parts to prevent a repeat. Pos. 202 4833 522 33464 Pos. 213 4822 532 52573 Pos. 204 4822 522 33465 Pos. 216 4822 444 40727 Pos. 208 4822 528 70851 Pos. 209 4822 528 70852 in case of damaged 202 and 204

SYMPTOM:Modification

CURE:Modification From October 1997 onwards, the CDM (item 1800) of the CD Short Loader was changed from CDM12.1 to VAM1201 (4822 691 10615). When the CDM12.1 is replaced by VAM1201, the Clamper Assy (item 212) has to be changed to 4822 401 11709. REMARKS : The production code of the ECO Short Loader with VAM1201 is KT02.

SYMPTOM:Correction to mechanical partslist

CURE:Correction to mechanical partslist In the Exploded view diagram of tape transport, the code number of item 74, the Eject Hook should be 4822 403 70968.

SYMPTOM:Service Manual, Recorder Module, Electrical partsl

CURE:Service Manual, Recorder Module, Electrical partslist - 2715 and 2722 are changed from 22nF to 33nF to improve ALC distortion at strong signal. 2733 is changed from Tubular type to Mylar capacitor to improve high temperature characteristic of bias modulation. 2732 is changed from 3.3nF to 4.7nF to increase the bias oscillation level. itemservice codedesrciption - 27154822 126 13174Cer Tub. 50V33nF 30% 27224822 126 13174Cer Tub. 50V33nF 30% 27324822 126 11714Cer Tub. 50V 4.7nF 20% 27334822 121 43144Cap Poly 50V22nF 10% REMARKS : Modifications are implemented in production from week 9638 onwards.

SYMPTOM:Correction to mechanical partslist

CURE:Correction to mechanical partslist In the Exploded view diagram of tape transport, the code number of item 74, the Eject Hook should be 4822 403 70968.

SYMPTOM:Modification

CURE:Modification From October 1997 onwards, the CDM (item 1800) of the CD Short Loader was changed from CDM12.1 to VAM1201 (4822 691 10615). When the CDM12.1 is replaced by VAM1201, the Clamper Assy (item 212) has to be changed to 4822 401 11709. REMARKS : The production code of the ECO Short Loader with VAM1201 is KT02.

SYMPTOM:CD Drawer does not open/close because items 202 and 204 are damaged.

CURE:The root cause of the problem is the insufficient guidance of the drawer that can jump over the gear wheel 202, such that the drawer cannot be closed completely.If the drawer is pulled or pushed, the cam gear will be damaged. Two guiding-brackets items 503 and 504 have been added at item 216 (tray). Also the pinion gear 213 has been modified. These actions reduce the risk of misalignment or damage to gear wheel 202 and the cam gear 204 when the CD tray is pulled or pushed. To avoid a repeat-repair, replace following components: pos 202, 4822 522 33464, tooth-wheel tray pos 204, 4822 522 33465, cam-wheel pos 208, 4822 528 70851, idler wheel 1 pos 209, 4822 528 70852, idler wheel 2 pos 213, 4822 532 52573, pignon guiding construction pos 216, 4822 444 40727, tray REMARKS: This information concerns module called Short Loader and ECO Short Loader. These modules have been applied in all above mentioned sets and this phenomenon may occur. This information also refers to newsletter publications issue 64.40; 65.01 and 96.06.05. In newsletter 65.01 was also the typenumber FW33 included. However in this set a 3 disc changer is applied and not the short loader module.

SYMPTOM:The Gear Wheels (pos. 202 and 204) are out of position.

CURE:It is recommended to replace the 2 gear wheels and the drawer (pos 216).

SYMPTOM:Drawer opens spontanuously

CURE:Toothed wheels pos.202 and 204 out of position. Remount wheels pos.202 and 204.

SYMPTOM:Modification

CURE:Modification From October 1997 onwards, the CDM (item 1800) of the CD Short Loader was changed from CDM12.1 to VAM1201 (4822 691 10615). When the CDM12.1 is replaced by VAM1201, the Clamper Assy (item 212) has to be changed to 4822 401 11709. REMARKS : The production code of the ECO Short Loader with VAM1201 is KT02.

SYMPTOM:Codenumber information

CURE:Codenumber information The Pinch Roller Arm Assembly (items 10 + 11 +12) on the cassette mechanism is now available under service code 4822 528 11189.

SYMPTOM:Correction to mechanical partslist

CURE:Correction to mechanical partslist In the Exploded view diagram of tape transport, the code number of item 74, the Eject Hook should be 4822 403 70968.

SYMPTOM:Service Manual, Recorder Module, Electrical partsl

CURE:Service Manual, Recorder Module, Electrical partslist - 2715 and 2722 are changed from 22nF to 33nF to improve ALC distortion at strong signal. 2733 is changed from Tubular type to Mylar capacitor to improve high temperature characteristic of bias modulation. 2732 is changed from 3.3nF to 4.7nF to increase the bias oscillation level. itemservice codedesrciption - 27154822 126 13174Cer Tub. 50V33nF 30% 27224822 126 13174Cer Tub. 50V33nF 30% 27324822 126 11714Cer Tub. 50V 4.7nF 20% 27334822 121 43144Cap Poly 50V22nF 10% REMARKS : Modifications are implemented in production from week 9638 onwards.

SYMPTOM:Spare part information

CURE:Spare part information The short-loader kit contains the parts needed for repair. Use all parts to prevent a repeat. Pos. 202 4833 522 33464 Pos. 213 4822 532 52573 Pos. 204 4822 522 33465 Pos. 216 4822 444 40727 Pos. 208 4822 528 70851 Pos. 209 4822 528 70852 in case of damaged 202 and 204

SYMPTOM:Correction Service Manual, Mechanical partslist

CURE:Correction Service Manual, Mechanical partslist - The correct Service code number for mains socket IEC reads 4822 265 20318.

SYMPTOM:At switch-on,POP indicator is ON, but no POP sound effect.

CURE:The problem is caused by a software bug. Two solutions are available: - Short Term : Add a transistor BC557C (4822 130 42231) and a resistor 4.7k (4822 116 52283).Connect the collector (C) of BC557B to the junction of 3512 and 3475, the emitter (E) to +M and the base (B) via a 4.7k resistor to junction of 3464 and 3465. - Long term: Replace microprocessor IC 7400 by 4822 209 17228. REMARKS : - Short term : Modification is implemented in production from week 9830 onwards. - Long term: New MPU IC will be used from week 9842 onwards.

SYMPTOM:CD Drawer does not open/close because items 202 and 204 are damaged.

CURE:The root cause of the problem is the insufficient guidance of the drawer that can jump over the gear wheel 202, such that the drawer cannot be closed completely.If the drawer is pulled or pushed, the cam gear will be damaged. Two guiding-brackets items 503 and 504 have been added at item 216 (tray). Also the pinion gear 213 has been modified. These actions reduce the risk of misalignment or damage to gear wheel 202 and the cam gear 204 when the CD tray is pulled or pushed. To avoid a repeat-repair, replace following components: pos 202, 4822 522 33464, tooth-wheel tray pos 204, 4822 522 33465, cam-wheel pos 208, 4822 528 70851, idler wheel 1 pos 209, 4822 528 70852, idler wheel 2 pos 213, 4822 532 52573, pignon guiding construction pos 216, 4822 444 40727, tray REMARKS: This information concerns module called Short Loader and ECO Short Loader. These modules have been applied in all above mentioned sets and this phenomenon may occur. This information also refers to newsletter publications issue 64.40; 65.01 and 96.06.05. In newsletter 65.01 was also the typenumber FW33 included. However in this set a 3 disc changer is applied and not the short loader module.

SYMPTOM:The Gear Wheels (pos. 202 and 204) are out of position.

CURE:It is recommended to replace the 2 gear wheels and the drawer (pos 216).

SYMPTOM:Drawer opens spontanuously

CURE:Toothed wheels pos.202 and 204 out of position. Remount wheels pos.202 and 204.

SYMPTOM:Correction to mechanical partslist

CURE:Correction to mechanical partslist In the Exploded view diagram of tape transport, the code number of item 74, the Eject Hook should be 4822 403 70968.

SYMPTOM:Correction Service Manual, Mechanical partslist

CURE:Correction Service Manual, Mechanical partslist - The correct Service code number for mains socket IEC reads 4822 265 20318.

SYMPTOM:Service Manual, Recorder Module, Electrical partsl

CURE:Service Manual, Recorder Module, Electrical partslist - 2715 and 2722 are changed from 22nF to 33nF to improve ALC distortion at strong signal. 2733 is changed from Tubular type to Mylar capacitor to improve high temperature characteristic of bias modulation. 2732 is changed from 3.3nF to 4.7nF to increase the bias oscillation level. itemservice codedesrciption - 27154822 126 13174Cer Tub. 50V33nF 30% 27224822 126 13174Cer Tub. 50V33nF 30% 27324822 126 11714Cer Tub. 50V 4.7nF 20% 27334822 121 43144Cap Poly 50V22nF 10% REMARKS : Modifications are implemented in production from week 9638 onwards.

SYMPTOM:Modification

CURE:Modification From October 1997 onwards, the CDM (item 1800) of the CD Short Loader was changed from CDM12.1 to VAM1201 (4822 691 10615). When the CDM12.1 is replaced by VAM1201, the Clamper Assy (item 212) has to be changed to 4822 401 11709. REMARKS : The production code of the ECO Short Loader with VAM1201 is KT02.

SYMPTOM:Spare part information

CURE:Spare part information The short-loader kit contains the parts needed for repair. Use all parts to prevent a repeat. Pos. 202 4833 522 33464 Pos. 213 4822 532 52573 Pos. 204 4822 522 33465 Pos. 216 4822 444 40727 Pos. 208 4822 528 70851 Pos. 209 4822 528 70852 in case of damaged 202 and 204

SYMPTOM:Codenumber information

CURE:Codenumber information The Pinch Roller Arm Assembly (items 10 + 11 +12) on the cassette mechanism is now available under service code 4822 528 11189.

SYMPTOM:The Gear Wheels (pos. 202 and 204) are out of position.

CURE:It is recommended to replace the 2 gear wheels and the drawer (pos 216).

SYMPTOM:Modification

CURE:Modification From October 1997 onwards, the CDM (item 1800) of the CD Short Loader was changed from CDM12.1 to VAM1201 (4822 691 10615). When the CDM12.1 is replaced by VAM1201, the Clamper Assy (item 212) has to be changed to 4822 401 11709. REMARKS : The production code of the ECO Short Loader with VAM1201 is KT02.

SYMPTOM:Codenumber information

CURE:Codenumber information The Pinch Roller Arm Assembly (items 10 + 11 +12) on the cassette mechanism is now available under service code 4822 528 11189.

SYMPTOM:At switch-on,POP indicator is ON, but no POP sound effect.

CURE:The problem is caused by a software bug. Two solutions are available: - Short Term : Add a transistor BC557C (4822 130 42231) and a resistor 4.7k (4822 116 52283).Connect the collector (C) of BC557B to the junction of 3512 and 3475, the emitter (E) to +M and the base (B) via a 4.7k resistor to junction of 3464 and 3465. - Long term: Replace microprocessor IC 7400 by 4822 209 17228. REMARKS : - Short term : Modification is implemented in production from week 9830 onwards. - Long term: New MPU IC will be used from week 9842 onwards.

SYMPTOM:Correction to the Service Manual

CURE:Electrical Partslist On Control board: 2400 5322 126 10223 47nF 10% X7R 63V 3422 4822 051 20332 3.3k½ 5% 0.1W 3483 4822 051 20105 1M½ 5% 0.1W 3487 4822 051 20124 120k½ 5% 0.1W On Feature board: 2556 4822 126 14585 100nF 20% X7R 16V 2557 4822 126 14585 100nF 20% X7R 16V 2574 4822 126 13188 15nF 20% X7R 50V 2575 4822 126 13188 15nF 20% X7R 50V 3593 4822 051 20683 68k½ 5% 0.1W 3594 4822 051 20683 68k½ 5% 0.1W 3612 4822 117 12521 68½ 5% 0.1W

SYMPTOM:Correction to the Service Manual

CURE:Electrical Partslist On Control board: 2400 5322 126 10223 47nF 10% X7R 63V 3422 4822 051 20332 3.3k½ 5% 0.1W 3483 4822 051 20105 1M½ 5% 0.1W 3487 4822 051 20124 120k½ 5% 0.1W On Feature board: 2556 4822 126 14585 100nF 20% X7R 16V 2557 4822 126 14585 100nF 20% X7R 16V 2574 4822 126 13188 15nF 20% X7R 50V 2575 4822 126 13188 15nF 20% X7R 50V 3593 4822 051 20683 68k½ 5% 0.1W 3594 4822 051 20683 68k½ 5% 0.1W 3612 4822 117 12521 68½ 5% 0.1W

SYMPTOM:The system goes in hang-up when switched to CD from TUNER or TAPE.

CURE:On the Front board, add a capacitor 1nF/50V (4822 122 33197) from pin 23 of 7401 to ground. REMARKS : Modification was implemented in production from week 9740 onwards.

SYMPTOM:Codenumber information

CURE:Codenumber information The Pinch Roller Arm Assembly (items 10 + 11 +12) on the cassette mechanism is now available under service code 4822 528 11189.

SYMPTOM:Correction Service Manual, Electrical partslist:

CURE:Correction Service Manual, Electrical partslist: On CD97 board, the service code of 2829 should read 4822 124 23178.

SYMPTOM:Codenumber information

CURE:Codenumber information The FFC cable (15-pins) connecting CD light-pen to CD97 board is now available via following service codenumber: pos 18004822 320 12178FFC/15P/65mm

SYMPTOM:Modification

CURE:Modification To improve the CD playability, the motor on the CD Drive is changed to type RF-310T.The service codenumber of the CD Drive becomes 4822 691 10654.To match with this modification, following components on the CD97 board should be changed. 28204822 121 5139947nF 10% 50V 38554822 116 5227133k 5% 0.16W REMARKS : Modification is implemented in production from week 9741 onwards.

SYMPTOM:Sets are not working on some batteries (e.g. Energizer batteries

CURE:because the battery plate fails to contact with the batteries. The cabinet wall holding the battery plate is too thick. The simplest service solution is to add a washer (of 0.5 - 0.7mm thickness) behind the battery plate to compensate the tolerance. On long term, the battery plate will be modified to increase the height of the contact point. REMARKS : Modification has been implemented in production from week 9926 onwards.

SYMPTOM:Pop noise is audible when cassette buttons are pressed.

CURE:Can be solved by making the following modification: Change 3302 from 4.7k to 5.6k (4822 116 52289) Change 3312 from 1k to 8.2k (4822 116 52303) Add Cap. 100uF/10V (4822 124 42446) connected from base of 7263 (+) to ground (-). REMARKS : Modification is implemented in production from week 9828 onwards.

SYMPTOM:CD does not operated because IC 7801 (M65821) is defective

CURE:IC7801 is damaged by overheating because its location is too close to the heatsink of the Power IC. The problem can be solved by reducing the supply voltage of the CD module: • Replace jumper 9526 by a resistor 3315, 4.7R (4822 050 4708) on Combi Board REMARKS : Modification has been implemented in production from week 9913 onwards.

SYMPTOM:ribs for holding the Battery Spring (item 459) are broken.

CURE:On the rear cabinet, the ribs for holding the Battery Spring (item 459) are broken. In order to strengthen the ribs their wall thickness was increased and a radius was added. REMARKS : Modification has been implemented in production from week 9934

SYMPTOM:parts on the Combi Board have been changed

CURE:following parts on the Combi Board have been changed to improve sound quality: • Capacitors 2518 and 2519 changed to 10nF (4822 121 51387) • Jumpers 9555 & 9556 replaced by resistors 3590 and 3591, 2.2k (4822 116 52256) • Resistors 3559 and 3560, 10k (4822 050 21003) added across pins 1 to 6 and 3 to 5 of volume control 3522 • Resistors 3595 and 3596 changed to 56k (4822 116 52291) REMARKS : Modification has been implemented in production from week 9910 onwards.

SYMPTOM:to improve reliability, transistor 7260 has been changed

CURE:to improve reliability, transistor 7260 has been changed from BC327-40 to BC369 (5322 130 44593). Due to different transistor-pinning, the layout of the printed board had to be modified. Layout stage “3140 113 3139.2” uses BC327-40 Layout stage “3140 113 3139.3” uses BC369 REMARKS : Modification has been implemented in production from week 9921 onwards.

SYMPTOM:Modification

CURE:Modification Resistor 3575 is replaced by a jumper. REMARKS : Implemented from production start onwards.

SYMPTOM:Correction to mechanical partlist

CURE:Correction to mechanical partlist - 4822 442 01499 cabinet top (not for /17) 4822 442 01689 cabinet top (for /17 only)

SYMPTOM:Correction to Electrical partslist

CURE:Correction to Electrical partslist : Item 2304 (22nF) on the combi board should be a polyester film capacitor.Service code is 4822 121 70619

SYMPTOM:Correction to the Mechanical partslist

CURE:Correction to the Mechanical partslist (Exploded View diagram) The service code number of item 444 should read: 4822 442 01499Cabinet-Top(not for /17) 4822 442 01689Cabinet-Top(for /17 only)

SYMPTOM:Sets are not working on some batteries (e.g. Energizer batteries

CURE:because the battery plate fails to contact with the batteries. The cabinet wall holding the battery plate is too thick. The simplest service solution is to add a washer (of 0.5 - 0.7mm thickness) behind the battery plate to compensate the tolerance. On long term, the battery plate will be modified to increase the height of the contact point. REMARKS : Modification has been implemented in production from week 9926 onwards.

SYMPTOM:ribs for holding the Battery Spring (item 459) are broken.

CURE:On the rear cabinet, the ribs for holding the Battery Spring (item 459) are broken. In order to strengthen the ribs their wall thickness was increased and a radius was added. REMARKS : Modification has been implemented in production from week 9934

SYMPTOM:Hum noise from mains-transformer is audiable.

CURE:Replace transformer (4822 146 10396).

SYMPTOM:Right channel only a very weak signal.

CURE:Check capacitor C2260 1uF.

SYMPTOM:The tuning pointer does not move.

CURE:The pole on the tuner bracket for holding the pulley is broken. Replace tuning bracket (4822 464 10291).

SYMPTOM:Codenumber information

CURE:Codenumber information The Pinch Roller Arm Assembly (items 10 + 11 +12) on the cassette mechanism is now available under service code 4822 528 11189.

SYMPTOM:Modification

CURE:Modification For sets with factory code KT02, which installs with new CD5 or CD6 CD modules, resistors 3847 and 3848 are changed from 22k to 33k (4822 116 52271) in order to solve the start up problem for 3 skew disc. REMARKS : Modification had been implemented in production from week 9742 onwards.

SYMPTOM:Modification

CURE:Modification To improve the CD playability, the motor on the CD Drive is changed to type RF-310T.The service codenumber of the CD Drive becomes 4822 691 10654.To match with this modification, following components on the CD97 board should be changed. 28204822 121 5139947nF 10% 50V 38554822 116 5227133k 5% 0.16W REMARKS : Modification is implemented in production from week 9741 onwards.

SYMPTOM:Modification

CURE:Modification In order to improve the accuracy of the regulated output voltage, following changes are introduced : Diode 6304 is changed to BZX79-F3V3 (4822 130 32806) Resistor 3253 is changed from 560 ohm to 470 ohm (4822 116 52224) REMARKS : Modification is implemented in production from week 9611 onwards.

SYMPTOM:Modification

CURE:Modification This information is only valid for sets which are produced after July 1997, referring to following service informations: A97-576 (4822 725 25628) for AZ2100 A97-577 (4822 725 25629) for AZ2600 A97-578 (4822 725 25631) for AZ2605 A97-579 (4822 725 25632) for AZ2615 To improve the CD playability, the motor on the CD Drive is changed to type RF-310T.The service codenumber of the CD Drive becomes 4822 691 10656.To match with this modification, following components on the CD5 or CD6 board should be changed. 28204822 121 5139947nF 10% 50V 38554822 116 5228447k 5% 0.16W REMARKS : Modification is implemented in production from week 9741 onwards

SYMPTOM:Correction Service Manual, electrical partslist

CURE:Correction Service Manual, electrical partslist - For version /00 and /05, the service codeunmber of the Mains transformer should read 4822 146 10768.

SYMPTOM:Modification

CURE:Modification From July 1997 onwards, with factory code starting from KT029 729..., new CDM and CD6 board are used. For servicing please refer to: Service Information A97-576 (4822 725 25628) for AZ2100 and Service Information A97-577 (4822 725 25629) for AZ2600.

SYMPTOM:Service Information

CURE:Service Information - The output pins LED and BIAS of item 8110 are not used. From week 9621 onwards, a 4-pins socket is used in the position of 8110. Consequently resistors 3103 and 3105 are also deleted.

SYMPTOM:Spare part information

CURE:Spare part information IC's PT2249A or TC9149A are pin compatible. Codenumber is 4822 209 61529 If the set still doesn't work after changing pos. 551, check pin 15 'osc' this has to be 38 khz +/- 5 khz.

SYMPTOM:Adjustment

CURE:Adjustment In the radio alignment section, the position of trimmer capacitors C1, C2, C3 and C4 are not indicated on the layout diagrams in the service manual. Reference is made to Service Information A97-587 (4822 725 25645) for the additional information.

SYMPTOM:The Power ON/OFF switch 1496 or resistor 3594 is burst

CURE:due to high transient current. Additional to Service Newsletter PA99.02.11, on long term the layout of the Front board will be modified and following parts will be changed or added: • Resistor 3456 changed to 15k (4822 116 52244) • Resistor 3457 changed to 5.6k (4822 116 52289) • Resistor 3516, 47 (4822 116 52195) added • Diode 7483 and 7484, 1N4148 (4822 130 30621) added REMARKS : Modification will be implemented in production from week 9932 onwards. This information will be followed by Service Information A99-573 (3140 785 22023).

SYMPTOM:The Power ON/OFF switch 1496 is burst.

CURE:The transient current through the switch is too high. To reduce the transient current we suggest the following changes: • Replace 3594 by a 10R fusible resistor (4822 052 11109) • Change 2567 to 100µF/25V (4822 124 40207) REMARKS : Modification has been implemented in production from week 9913 onwards.

SYMPTOM:No FM reception at the higher end frequencies of the FM-band

CURE:when Volume is set to maximum and MODE button is pressed. Problem can be solved by changing following parts: • Capacitor 2322 and 2326 changed to 22µF (4822 124 81151) • Resistor 3223 changed to 150R (4822 116 83868) REMARKS : Modification has been implemented in production from week 9923 onwards.

SYMPTOM:Partslist

CURE:Partslist - The partslist of ECO5 Tuner board is missing; It is published in following Service Informations : A98-5624822 725 26185for AZ2407 A98-5634822 725 26186for AZ2402 Also add following service codenumber electrical partslist : IC 74004822 209 16661TMP87C22-AZ2402

SYMPTOM:Preset radio memory is lost when mains is disconnected.

CURE:To extend the memory retaining time, change the zener ZD302 from 4.7V to 6.8V (4822 130 34278). REMARKS : It is advised to change ZD302 in every set, brought in for repair. Modification will be implemented in production from week 9730 onwards.

SYMPTOM:Disc starts to turn but TOC can not be read in.

CURE:Check/replace IC101.

SYMPTOM:The tape deck part does not rewind.

CURE:Check switch pos 20.

SYMPTOM:Memory is lost when mains-supply is switched-off in stand-by position

CURE:This is according to the concept of the set.

SYMPTOM:Correction Service Manual

CURE:Correction Service Manual - The service code of IC101 TA2065F should read 4822 209 15462. The Remote Transmitter Assy is now available with service code 4822 219 10196.

SYMPTOM:Modification

CURE:Modification During production, LD202 and LD203 (to light volume controls) were changed from orange to green.Service code of green LED is 4822 130 10668.

SYMPTOM:Correction Service Manual, Electrical partslist

CURE:Correction Service Manual, Electrical partslist - The service codenumber of IC101 TA2065F should read 4822 209 15462.

SYMPTOM:The Power ON/OFF switch 1496 or resistor 3594 is burst

CURE:due to high transient current. Additional to Service Newsletter PA99.02.11, on long term the layout of the Front board will be modified and following parts will be changed or added: • Resistor 3456 changed to 15k (4822 116 52244) • Resistor 3457 changed to 5.6k (4822 116 52289) • Resistor 3516, 47 (4822 116 52195) added • Diode 7483 and 7484, 1N4148 (4822 130 30621) added REMARKS : Modification will be implemented in production from week 9932 onwards. This information will be followed by Service Information A99-573 (3140 785 22023).

SYMPTOM:No FM reception at the higher end frequencies of the FM-band

CURE:when Volume is set to maximum and MODE button is pressed. Problem can be solved by changing following parts: • Capacitor 2322 and 2326 changed to 22µF (4822 124 81151) • Resistor 3223 changed to 150R (4822 116 83868) REMARKS : Modification has been implemented in production from week 9923 onwards.

SYMPTOM:Modification

CURE:Modification During production, resistor 3452 is changed from 220 ohm to 33 ohm (4822 116 52191) to improve remote control sensitivity at battery low condition.

SYMPTOM:Partslist

CURE:Partslist - The partslist of ECO5 Tuner board is missing; It is published in following Service Informations : A98-5624822 725 26185for AZ2407 A98-5634822 725 26186for AZ2402 Also add following service codenumber electrical partslist : IC 74004822 209 16661TMP87C22-AZ2402

SYMPTOM:Modification

CURE:Modification To improve sensitivity of the Remote Control at low battery conditions, change resistor 3452 from 220 ohm to 33 ohm.

SYMPTOM:Modification

CURE:Modification From October 1997 onwards, the CDM (item 1800) of the CD Short Loader was changed from CDM12.1 to VAM1201 (4822 691 10615). When the CDM12.1 is replaced by VAM1201, the Clamper Assy (item 212) has to be changed to 4822 401 11709. REMARKS : The production code of the ECO Short Loader with VAM1201 is KT02.

SYMPTOM:Correction to mechanical partslist

CURE:Correction to mechanical partslist The service codenumber of pos. 443, the Battery Spring should be 4822 492 11566.

SYMPTOM:Hum noise from mains-transformer is audiable.

CURE:Replace transformer (4822 146 10396).

SYMPTOM:The tuning pointer does not move.

CURE:The pole on the tuner bracket for holding the pulley is broken. Replace tuning bracket (4822 464 10291).

SYMPTOM:Service Information

CURE:Service Information - The output pins LED and BIAS of item 8110 are not used. From week 9621 onwards, a 4-pins socket is used in the position of 8110. Consequently resistors 3103 and 3105 are also deleted.

SYMPTOM:Codenumber information

CURE:Codenumber information The Pinch Roller Arm Assembly (items 10 + 11 +12) on the cassette mechanism is now available under service code 4822 528 11189.

SYMPTOM:Modification

CURE:Modification For sets with factory code KT02, which installs with new CD5 or CD6 CD modules, resistors 3847 and 3848 are changed from 22k to 33k (4822 116 52271) in order to solve the start up problem for 3 skew disc. REMARKS : Modification had been implemented in production from week 9742 onwards.

SYMPTOM:Modification

CURE:Modification This information is only valid for sets which are produced after July 1997, referring to following service informations: A97-576 (4822 725 25628) for AZ2100 A97-577 (4822 725 25629) for AZ2600 A97-578 (4822 725 25631) for AZ2605 A97-579 (4822 725 25632) for AZ2615 To improve the CD playability, the motor on the CD Drive is changed to type RF-310T.The service codenumber of the CD Drive becomes 4822 691 10656.To match with this modification, following components on the CD5 or CD6 board should be changed. 28204822 121 5139947nF 10% 50V 38554822 116 5228447k 5% 0.16W REMARKS : Modification is implemented in production from week 9741 onwards

SYMPTOM:Modification

CURE:Modification To improve the CD playability, the motor on the CD Drive is changed to type RF-310T.The service codenumber of the CD Drive becomes 4822 691 10654.To match with this modification, following components on the CD97 board should be changed. 28204822 121 5139947nF 10% 50V 38554822 116 5227133k 5% 0.16W REMARKS : Modification is implemented in production from week 9741 onwards.

SYMPTOM:Modification

CURE:Modification In order to improve the accuracy of the regulated output voltage, following changes are introduced : Diode 6304 is changed to BZX79-F3V3 (4822 130 32806) Resistor 3253 is changed from 560 ohm to 470 ohm (4822 116 52224) REMARKS : Modification is implemented in production from week 9611 onwards.

SYMPTOM:Service Manual, Tape Board, Electrical partslist

CURE:Service Manual, Tape Board, Electrical partslist 2721 is changed from Tubular type to Mylar capacitor to improve high temperature characteristic of bias modulation. 2722 is changed from 3.3nF to 4.7nF to increase the bias oscillation level. itemservice codedesrciption - 27214822 121 43144Cap. Poly 22nF 10% 27224822 126 11714Cer Tub. 50V 4.7nF 20% REMARKS : Modifications are implemented in production from week 9638 onwards.

SYMPTOM:Correction Service Manual

CURE:Correction Service Manual - Following modifications have been implemented since production start. - Cap. 2711 and 2712 have been changed from 220uF to 47uF (4822 124 41397) to improve low frequency over-load. - Cap. 2724 has been changed from 470pF to 680pF (5322 122 32052) for controlling bias frequency to 73 kHz plus/minus 1 kHz. - Resistor 3708 has been changed from 82 kOhm to 68 kOhm (4822 116 52297) to improve Rec/Play distortion.

SYMPTOM:Modification

CURE:Modification The motor of the cassette mechanism is changed from EG-530AD-9B to EG-530YD-9BH (4822 361 21592) in order to improve starting torque. Following components have been added on the cassette board to match the change of motor. 27034822 124 41397Cap. 47uF/25V 37034822 116 52176Resistor 10 ohm 37054822 116 83863Resistor 1k ohm 37584822 100 20165Potm. trim 500 ohm Tape speed adjustment: Adjust 3758 instead of the potmeter inside the motor. REMARKS : Changes are implemented in production since production start.

SYMPTOM:Modification

CURE:Modification From July 1997 onwards, with factory code starting from KT029 729..., new CDM and CD6 board are used. For servicing please refer to: Service Information A97-576 (4822 725 25628) for AZ2100 and Service Information A97-577 (4822 725 25629) for AZ2600.

SYMPTOM:Hum noise from mains-transformer is audiable.

CURE:Replace transformer (4822 146 10396).

SYMPTOM:The tuning pointer does not move.

CURE:The pole on the tuner bracket for holding the pulley is broken. Replace tuning bracket (4822 464 10291).

SYMPTOM:Modification

CURE:Modification This information is only valid for sets which are produced after July 1997, referring to following service informations: A97-576 (4822 725 25628) for AZ2100 A97-577 (4822 725 25629) for AZ2600 A97-578 (4822 725 25631) for AZ2605 A97-579 (4822 725 25632) for AZ2615 To improve the CD playability, the motor on the CD Drive is changed to type RF-310T.The service codenumber of the CD Drive becomes 4822 691 10656.To match with this modification, following components on the CD5 or CD6 board should be changed. 28204822 121 5139947nF 10% 50V 38554822 116 5228447k 5% 0.16W REMARKS : Modification is implemented in production from week 9741 onwards

SYMPTOM:Service Manual, Tape Board, Electrical partslist

CURE:Service Manual, Tape Board, Electrical partslist 2721 is changed from Tubular type to Mylar capacitor to improve high temperature characteristic of bias modulation. 2722 is changed from 3.3nF to 4.7nF to increase the bias oscillation level. itemservice codedesrciption - 27214822 121 43144Cap. Poly 22nF 10% 27224822 126 11714Cer Tub. 50V 4.7nF 20% REMARKS : Modifications are implemented in production from week 9638 onwards.

SYMPTOM:Modification

CURE:Modification For sets with factory code KT02, which installs with new CD5 or CD6 CD modules, resistors 3847 and 3848 are changed from 22k to 33k (4822 116 52271) in order to solve the start up problem for 3 skew disc. REMARKS : Modification had been implemented in production from week 9742 onwards.

SYMPTOM:Modification

CURE:Modification To improve the CD playability, the motor on the CD Drive is changed to type RF-310T.The service codenumber of the CD Drive becomes 4822 691 10654.To match with this modification, following components on the CD97 board should be changed. 28204822 121 5139947nF 10% 50V 38554822 116 5227133k 5% 0.16W REMARKS : Modification is implemented in production from week 9741 onwards.

SYMPTOM:Modification

CURE:Modification Item 7812, the remote control sensor TFMS5360 (4822 212 30842) is replaced by TSOP1736 (4822 218 11745). REMARKS : Change had been implemented in production from week 9740 onwards. No other components need to be changed when replacing 7812 by a new one.

SYMPTOM:Codenumber information

CURE:Codenumber information Pos. 7812 TSOP1736 new remote control sensor is 4822 218 11745

SYMPTOM:Codenumber information

CURE:Codenumber information The Pinch Roller Arm Assembly (items 10 + 11 +12) on the cassette mechanism is now available under service code 4822 528 11189.

SYMPTOM:Service Manual, Tape Board, Electrical partslist

CURE:Service Manual, Tape Board, Electrical partslist 2721 is changed from Tubular type to Mylar capacitor to improve high temperature characteristic of bias modulation. 2722 is changed from 3.3nF to 4.7nF to increase the bias oscillation level. itemservice codedesrciption - 27214822 121 43144Cap. Poly 22nF 10% 27224822 126 11714Cer Tub. 50V 4.7nF 20% REMARKS : Modifications are implemented in production from week 9638 onwards.

SYMPTOM:Modification

CURE:Modification This information is only valid for sets which are produced after July 1997, referring to following service informations: A97-576 (4822 725 25628) for AZ2100 A97-577 (4822 725 25629) for AZ2600 A97-578 (4822 725 25631) for AZ2605 A97-579 (4822 725 25632) for AZ2615 To improve the CD playability, the motor on the CD Drive is changed to type RF-310T.The service codenumber of the CD Drive becomes 4822 691 10656.To match with this modification, following components on the CD5 or CD6 board should be changed. 28204822 121 5139947nF 10% 50V 38554822 116 5228447k 5% 0.16W REMARKS : Modification is implemented in production from week 9741 onwards

SYMPTOM:Modification

CURE:Modification Item 7812, the remote control sensor TFMS5360 (4822 212 30842) is replaced by TSOP1736 (4822 218 11745). REMARKS : Change had been implemented in production from week 9740 onwards. No other components need to be changed when replacing 7812 by a new one.

SYMPTOM:Modification

CURE:Modification For sets with factory code KT02, which installs with new CD5 or CD6 CD modules, resistors 3847 and 3848 are changed from 22k to 33k (4822 116 52271) in order to solve the start up problem for 3 skew disc. REMARKS : Modification had been implemented in production from week 9742 onwards.

SYMPTOM:Codenumber information

CURE:Codenumber information The Pinch Roller Arm Assembly (items 10 + 11 +12) on the cassette mechanism is now available under service code 4822 528 11189.

SYMPTOM:Modification

CURE:Modification Two metal brackets are added to protect the hinges. Reason: strong pressure on edges can loosen the cassette door. For detail please see Service newsletter PA98.05. REMARKS : Modification is implemented in production from week 9836 onwards.

SYMPTOM:Modification

CURE:Modification Two metal brackets are added to protect the hinges. Reason: strong pressure on edges can loosen the cassette door. For detail please see Service newsletter PA98.05. REMARKS : Modification is implemented in production from week 9836 onwards.

SYMPTOM:Modification

CURE:Modification Two metal brackets are added to protect the hinges. Reason: strong pressure on edges can loosen the cassette door. For detail please see Service newsletter PA98.05. REMARKS : Modification is implemented in production from week 9836 onwards.

SYMPTOM:Abnormal noise is audible in TAPE mode.

CURE:The signal paths on the Recorder board are too close. Solution is to cut 2 copper tracks on the printed board and to connect resistor 3729 and capacitor 2736 with a wire (for details see diagram below). REMARKS : Modification has been implemented in production from week 9922 onwards. This information will be followed by Service Information A99-577 (3140 785 22030).

SYMPTOM:Correction to the Service Manual

CURE:Mechanical Partslist The codenumber for the Motor Pulley (item 116 on tape deck assy) should read 4822 528 81493.

SYMPTOM:the source selection IC TC9145 (pos. U1) has been replaced

CURE:IC TC9145 (pos. U1) has been replaced by the new type PT233 (9655 000 01767). REMARKS : The new IC is used in production from week 9938 onwards with factory change code KZ02.

SYMPTOM:supply shortfall of servo IC TDA7073A

CURE:Due to supply shortfall of servo IC TDA7073A, the CD module had to be redesigned for IC TCA0372DP1. The new modules are used in production alternatively. For repair information on new CD modules see Service Information A00-554 (3140 785 22340). REMARKS : Alternative CD modules are used in production from week 0014 onwards.

SYMPTOM:codenumber of the CD Door Switch

CURE:The switch is available with codenumber 4822 276 13963

SYMPTOM:Abnormal noise is audible in TAPE mode.

CURE:The signal paths on the Recorder board are too close. Solution is to cut 2 copper tracks on the printed board and to connect resistor 3729 and capacitor 2736 with a wire (for details see diagram below). REMARKS : Modification has been implemented in production from week 9922 onwards. This information will be followed by Service Information A99-577 (3140 785 22030).

SYMPTOM:Correction to the Service Manual

CURE:Mechanical Partslist The codenumber for the Motor Pulley (item 116 on tape deck assy) should read 4822 528 81493.

SYMPTOM:supply shortfall of servo IC TDA7073A

CURE:Due to supply shortfall of servo IC TDA7073A, the CD module had to be redesigned for IC TCA0372DP1. The new modules are used in production alternatively. For repair information on new CD modules see Service Information A00-554 (3140 785 22340). REMARKS : Alternative CD modules are used in production from week 0014 onwards.

SYMPTOM:codenumber of the CD Door Switch

CURE:The switch is available with codenumber 4822 276 13963

SYMPTOM:The Gear Wheels (pos. 202 and 204) are out of position.

CURE:It is recommended to replace the 2 gear wheels and the drawer (pos 216).

SYMPTOM:Modification

CURE:Modification From October 1997 onwards, the CDM (item 1800) of the CD Short Loader was changed from CDM12.1 to VAM1201 (4822 691 10615). When the CDM12.1 is replaced by VAM1201, the Clamper Assy (item 212) has to be changed to 4822 401 11709. REMARKS : The production code of the ECO Short Loader with VAM1201 is KT02.

SYMPTOM:Codenumber information

CURE:Codenumber information The Pinch Roller Arm Assembly (items 10 + 11 +12) on the cassette mechanism is now available under service code 4822 528 11189.

SYMPTOM:The CD part is totally inoperative.

CURE:Check/replace D6250.

SYMPTOM:CD Drawer does not open/close because items 202 and 204 are damaged.

CURE:The root cause of the problem is the insufficient guidance of the drawer that can jump over the gear wheel 202, such that the drawer cannot be closed completely.If the drawer is pulled or pushed, the cam gear will be damaged. Two guiding-brackets items 503 and 504 have been added at item 216 (tray). Also the pinion gear 213 has been modified. These actions reduce the risk of misalignment or damage to gear wheel 202 and the cam gear 204 when the CD tray is pulled or pushed. To avoid a repeat-repair, replace following components: pos 202, 4822 522 33464, tooth-wheel tray pos 204, 4822 522 33465, cam-wheel pos 208, 4822 528 70851, idler wheel 1 pos 209, 4822 528 70852, idler wheel 2 pos 213, 4822 532 52573, pignon guiding construction pos 216, 4822 444 40727, tray REMARKS: This information concerns module called Short Loader and ECO Short Loader. These modules have been applied in all above mentioned sets and this phenomenon may occur. This information also refers to newsletter publications issue 64.40; 65.01 and 96.06.05. In newsletter 65.01 was also the typenumber FW33 included. However in this set a 3 disc changer is applied and not the short loader module.

SYMPTOM:The Gear Wheels (pos. 202 and 204) are out of position.

CURE:It is recommended to replace the 2 gear wheels and the drawer (pos 216).

SYMPTOM:The CD drawer does not open or close.

CURE:The ECO Short Loader is out of position at the rear fixing slot. This fault might be caused when the set has been dropped. Short term and service solution : Add brackets to the rib at both sides of the ECO Short Loader Chassis (item 206). The parts are available via following service codes : 4822 402 10641Bracket 4822 502 11473Screw M3x8 4822 505 10758Nut M3 Mount the bracket with screw and nut. Long term solution : Ribs will be added on the rear cabinet to strengthen the bracket for holding the ECO Short Loader. REMARKS : It is advised to add the brackets in every set, brought in for repair, with production stamp before week 9642. New Rear Cabinet will be implemented in production from week 9645 onwards.

SYMPTOM:Drawer opens spontanuously

CURE:Toothed wheels pos.202 and 204 out of position. Remount wheels pos.202 and 204.

SYMPTOM:Codenumber information

CURE:Codenumber information The Pinch Roller Arm Assembly (items 10 + 11 +12) on the cassette mechanism is now available under service code 4822 528 11189.

SYMPTOM:Service Manual, Recorder Module, Electrical partsl

CURE:Service Manual, Recorder Module, Electrical partslist - 2721 is changed from Tubular type to Mylar capacitor to improve high temperature characteristic of bias modulation. 2722 is changed from 3.3nF to 4.7nF to increase the bias oscillation level. itemservice codedesrciption - 27214822 121 43144Cap. Poly 22nF 10% 27224822 126 11714Cer Tub. 50V 4.7nF 20% REMARKS : Modifications are implemented in production from week 9638 onwards.

SYMPTOM:Spare part information

CURE:Spare part information The short-loader kit contains the parts needed for repair. Use all parts to prevent a repeat. Pos. 202 4833 522 33464 Pos. 213 4822 532 52573 Pos. 204 4822 522 33465 Pos. 216 4822 444 40727 Pos. 208 4822 528 70851 Pos. 209 4822 528 70852 in case of damaged 202 and 204

SYMPTOM:Correction Service Manual, Mechanical partslist

CURE:Correction Service Manual, Mechanical partslist - The correct Service code number for mains socket IEC reads 4822 265 20318.

SYMPTOM:Modification

CURE:Modification From October 1997 onwards, the CDM (item 1800) of the CD Short Loader was changed from CDM12.1 to VAM1201 (4822 691 10615). When the CDM12.1 is replaced by VAM1201, the Clamper Assy (item 212) has to be changed to 4822 401 11709. REMARKS : The production code of the ECO Short Loader with VAM1201 is KT02.

SYMPTOM:CD Drawer does not open/close because items 202 and 204 are damaged.

CURE:The root cause of the problem is the insufficient guidance of the drawer that can jump over the gear wheel 202, such that the drawer cannot be closed completely.If the drawer is pulled or pushed, the cam gear will be damaged. Two guiding-brackets items 503 and 504 have been added at item 216 (tray). Also the pinion gear 213 has been modified. These actions reduce the risk of misalignment or damage to gear wheel 202 and the cam gear 204 when the CD tray is pulled or pushed. To avoid a repeat-repair, replace following components: pos 202, 4822 522 33464, tooth-wheel tray pos 204, 4822 522 33465, cam-wheel pos 208, 4822 528 70851, idler wheel 1 pos 209, 4822 528 70852, idler wheel 2 pos 213, 4822 532 52573, pignon guiding construction pos 216, 4822 444 40727, tray REMARKS: This information concerns module called Short Loader and ECO Short Loader. These modules have been applied in all above mentioned sets and this phenomenon may occur. This information also refers to newsletter publications issue 64.40; 65.01 and 96.06.05. In newsletter 65.01 was also the typenumber FW33 included. However in this set a 3 disc changer is applied and not the short loader module.

SYMPTOM:The Gear Wheels (pos. 202 and 204) are out of position.

CURE:It is recommended to replace the 2 gear wheels and the drawer (pos 216).

SYMPTOM:The CD drawer does not open or close.

CURE:The ECO Short Loader is out of position at the rear fixing slot. This fault might be caused when the set has been dropped. Short term and service solution : Add brackets to the rib at both sides of the ECO Short Loader Chassis (item 206). The parts are available via following service codes : 4822 402 10641Bracket 4822 502 11473Screw M3x8 4822 505 10758Nut M3 Mount the bracket with screw and nut. Long term solution : Ribs will be added on the rear cabinet to strengthen the bracket for holding the ECO Short Loader. REMARKS : It is advised to add the brackets in every set, brought in for repair, with production stamp before week 9642. New Rear Cabinet will be implemented in production from week 9645 onwards.

SYMPTOM:Spare part information

CURE:Spare part information The short-loader kit contains the parts needed for repair. Use all parts to prevent a repeat. Pos. 202 4833 522 33464 Pos. 213 4822 532 52573 Pos. 204 4822 522 33465 Pos. 216 4822 444 40727 Pos. 208 4822 528 70851 Pos. 209 4822 528 70852 in case of damaged 202 and 204

SYMPTOM:Codenumber information

CURE:Codenumber information The Pinch Roller Arm Assembly (items 10 + 11 +12) on the cassette mechanism is now available under service code 4822 528 11189.

SYMPTOM:Service Manual, Recorder Module, Electrical partsl

CURE:Service Manual, Recorder Module, Electrical partslist - 2721 is changed from Tubular type to Mylar capacitor to improve high temperature characteristic of bias modulation. 2722 is changed from 3.3nF to 4.7nF to increase the bias oscillation level. itemservice codedesrciption - 27214822 121 43144Cap. Poly 22nF 10% 27224822 126 11714Cer Tub. 50V 4.7nF 20% REMARKS : Modifications are implemented in production from week 9638 onwards.

SYMPTOM:Correction Service Manual, Mechanical partslist

CURE:Correction Service Manual, Mechanical partslist - The correct Service code number for mains socket IEC reads 4822 265 20318.

SYMPTOM:Modification

CURE:Modification From October 1997 onwards, the CDM (item 1800) of the CD Short Loader was changed from CDM12.1 to VAM1201 (4822 691 10615). When the CDM12.1 is replaced by VAM1201, the Clamper Assy (item 212) has to be changed to 4822 401 11709. REMARKS : The production code of the ECO Short Loader with VAM1201 is KT02.

SYMPTOM:Replacement of CDM12.1 for 7-Disc Changer

CURE:Production of CDM12.1 will stop. For service purpose CDM12.1 (4822 691 30278) will be replaced by service kit VAM1201 (4822 310 11263) when stock depletes. As an alternative, the CDM12.1 can be replaced by CDM12.1/T (4822 691 30343) without any further modifications.

SYMPTOM:Modification

CURE:Modification During production the spring pos. 70 has been modified from 16mm length to 14mm to match a similar change in the bracket pos. 2. This makes matching between the bracket and spring necessary during repair.For this reason a new service 12NC for pos 70 is created for the new spring.Below shows both spring (pos. 70) and their ordering 12NCs. Service codesDescription ============== =========== 4822 492 42713 Spring 16mm 4822 492 11413 Spring 14mm

SYMPTOM:Service Manual error

CURE:Service Manual error Add to electrical parts list: Add capacitor 2869 22uF 20% 50V (4822 124 41596) which is accidently left out of the CDC-7 Module parts list. For AZ3708/01: Item 215 front cabinet should be 4822 459 04261 instead of 4822 459 04125. Item 216 window display should be 4822 381 11763 instead of 4822 381 11719. For AZ3705 and AZ3708 Item 280 door battery should be 4822 443 10397 instead of 4822 423 41277.

SYMPTOM:Spare part information

CURE:Spare part information Pos 48 for the CDC mechanism is now available as service spare part. The 12NC is 4822 401 11681Chassis clamper.

SYMPTOM:Replacement of CDM12.1 for 7-Disc Changer

CURE:Replacement of CDM12.1 for 7-Disc Changer - Production of CDM12.1 will stop. For service purpose CDM12.1 (4822 691 30278) will be replaced by service kit VAM1201 (4822 310 11263) when stock depletes. For the above mentioned sets with 7-Disc Changer the new VAM1201 does not fit. As an alternative, the CDM12.1 can be replaced by CDM12.1/T (4822 691 30343) without any further modifications.

SYMPTOM:Replacement of CDM12.1 for 7-Disc Changer

CURE:Production of CDM12.1 will stop. For service purpose CDM12.1 (4822 691 30278) will be replaced by service kit VAM1201 (4822 310 11263) when stock depletes. As an alternative, the CDM12.1 can be replaced by CDM12.1/T (4822 691 30343) without any further modifications.

SYMPTOM:Replacement of CDM12.1 for 7-Disc Changer

CURE:Replacement of CDM12.1 for 7-Disc Changer - Production of CDM12.1 will stop. For service purpose CDM12.1 (4822 691 30278) will be replaced by service kit VAM1201 (4822 310 11263) when stock depletes. For the above mentioned sets with 7-Disc Changer the new VAM1201 does not fit. As an alternative, the CDM12.1 can be replaced by CDM12.1/T (4822 691 30343) without any further modifications.

SYMPTOM:Spare part information

CURE:Spare part information Pos 48 for the CDC mechanism is now available as service spare part. The 12NC is 4822 401 11681Chassis clamper.

SYMPTOM:Modification

CURE:Modification During production the spring pos. 70 has been modified from 16mm length to 14mm to match a similar change in the bracket pos. 2. This makes matching between the bracket and spring necessary during repair.For this reason a new service 12NC for pos 70 is created for the new spring.Below shows both spring (pos. 70) and their ordering 12NCs. Service codesDescription ============== =========== 4822 492 42713 Spring 16mm 4822 492 11413 Spring 14mm

SYMPTOM:Service Manual error

CURE:Service Manual error Add to electrical parts list: Add capacitor 2869 22uF 20% 50V (4822 124 41596) which is accidently left out of the CDC-7 Module parts list. For AZ3708/01: Item 215 front cabinet should be 4822 459 04261 instead of 4822 459 04125. Item 216 window display should be 4822 381 11763 instead of 4822 381 11719. For AZ3705 and AZ3708 Item 280 door battery should be 4822 443 10397 instead of 4822 423 41277.

SYMPTOM:Change on Tuning grid frequency

CURE:Change on Tuning grid frequency - The procedure on changing the Tuning grid frequency published on page 2-4 has been changed.The new procedure is as follows: 1. Switch on the unit 2. Press and hold the BAND button for 5 seconds, the display will shows Grid 9 or Grid 10 depending on the last grid setting.

SYMPTOM:Service Manual, MTF Module, Electrical Partslist

CURE:Service Manual, MTF Module, Electrical Partslist The recording bias oscillation level is too low. Change the capacitor 2732 from 3.3nF to 4.7nF (4822 126 11714). REMARKS : Modification is implemented in production from week 9638 onwards.

SYMPTOM:Service Manual, MTF Module, Electrical Partslist

CURE:Service Manual, MTF Module, Electrical Partslist The recording bias oscillation level is too low. Change the capacitor 2732 from 3.3nF to 4.7nF (4822 126 11714). REMARKS : Modification is implemented in production from week 9638 onwards.

SYMPTOM:Service hint

CURE:Service hint In case of oscillating of the focus a new disc-hold-down 4822 532 52334 can be placed.

SYMPTOM:Service hint

CURE:Service hint In case of oscillating of the focus a new disc-hold-down 4822 532 52334 can be placed.

SYMPTOM:Electrical partslist

CURE:Electrical partslist The uP TMP47C820AF-N817 (item 7900) is available under service codenumber 4822 209 31281.

SYMPTOM:SBC6411 (4822 138 10418) cannot be recharged to nominal voltage.

CURE:This fault is caused by the poor characteristic of this type of battery. It can be solved by replacing this rechargeable SLA battery into 4 NiCd rechargeable batteries. These NiCd batteries have to be inserted into the battery holder (4822 256 60323) delivered with the set. These batteries can (for safety reasons) not be charged in this battery holder of the set. That is why a separate battery charger PNC310 is made available. Complete set of PNC310 battery charger with 4x NiCd-R6/AA/UM3 batteries included: for /00 version (220V & Euro-connector) : 4822 218 10551 for /05 version (240V & UK-connector) : 4822 218 10552 for /17 version (USA) this PNC310-set is under investigation for /01 (multi voltage) this PNC310-set is under investigation Separate 2x NiCd-R6/AA/UM3 batteries are available under: 4822 138 10073. REMARKS : This publication will be followed by a service information A94-562, A94-563, A94-564, A94-565 From June 1994 onwards this modification will be implemented in the produced sets. From that moment onwards the battery charger PNC310 and the NiCd-R6/AA/UM3 rechargeable batteries will be added to the set.

SYMPTOM:PNC310 battery charger

CURE:PNC310 battery charger We announced further investigations to check the availability of PNC310 battery charger, for stroke versions /01 and /17. Now we have to inform you that we did not succeed within the Philips branded range to find battery chargers to be suited for AZ6813/01/17, AZ6814/01/17, AZ6815/01/07, AZ6823/01/17, AZ6825/01/17. However this is a common article in the market and an equivalent battery charger is expected to be available within the regular photo and brown/white good channels. PNC310 for /00 (4822 218 10551) and /05 (4822 218 10552) still remains available. REMARKS : This publication will not be followed by a service information.

SYMPTOM:SBC6411 (4822 138 10418) cannot be recharged to nominal voltage.

CURE:This fault is caused by the poor characteristic of this type of battery. It can be solved by replacing this rechargeable SLA battery into 4 NiCd rechargeable batteries. These NiCd batteries have to be inserted into the battery holder (4822 256 60323) delivered with the set. These batteries can (for safety reasons) not be charged in this battery holder of the set. That is why a separate battery charger PNC310 is made available. Complete set of PNC310 battery charger with 4x NiCd-R6/AA/UM3 batteries included: for /00 version (220V & Euro-connector) : 4822 218 10551 for /05 version (240V & UK-connector) : 4822 218 10552 for /17 version (USA) this PNC310-set is under investigation for /01 (multi voltage) this PNC310-set is under investigation Separate 2x NiCd-R6/AA/UM3 batteries are available under: 4822 138 10073. REMARKS : This publication will be followed by a service information A94-562, A94-563, A94-564, A94-565 From June 1994 onwards this modification will be implemented in the produced sets. From that moment onwards the battery charger PNC310 and the NiCd-R6/AA/UM3 rechargeable batteries will be added to the set.

SYMPTOM:PNC310 battery charger

CURE:PNC310 battery charger We announced further investigations to check the availability of PNC310 battery charger, for stroke versions /01 and /17. Now we have to inform you that we did not succeed within the Philips branded range to find battery chargers to be suited for AZ6813/01/17, AZ6814/01/17, AZ6815/01/07, AZ6823/01/17, AZ6825/01/17. However this is a common article in the market and an equivalent battery charger is expected to be available within the regular photo and brown/white good channels. PNC310 for /00 (4822 218 10551) and /05 (4822 218 10552) still remains available. REMARKS : This publication will not be followed by a service information.

SYMPTOM:Totally inoperative.

CURE:Check if pin 19 of IC 7902 is low, this pin is the power on command pin from the CPU. Check series diode 6910 (BAV 99) for open circuit.

SYMPTOM:SBC6411 (4822 138 10418) cannot be recharged to nominal voltage.

CURE:This fault is caused by the poor characteristic of this type of battery. It can be solved by replacing this rechargeable SLA battery into 4 NiCd rechargeable batteries. These NiCd batteries have to be inserted into the battery holder (4822 256 60323) delivered with the set. These batteries can (for safety reasons) not be charged in this battery holder of the set. That is why a separate battery charger PNC310 is made available. Complete set of PNC310 battery charger with 4x NiCd-R6/AA/UM3 batteries included: for /00 version (220V & Euro-connector) : 4822 218 10551 for /05 version (240V & UK-connector) : 4822 218 10552 for /17 version (USA) this PNC310-set is under investigation for /01 (multi voltage) this PNC310-set is under investigation Separate 2x NiCd-R6/AA/UM3 batteries are available under: 4822 138 10073. REMARKS : This publication will be followed by a service information A94-562, A94-563, A94-564, A94-565 From June 1994 onwards this modification will be implemented in the produced sets. From that moment onwards the battery charger PNC310 and the NiCd-R6/AA/UM3 rechargeable batteries will be added to the set.

SYMPTOM:Diode 6910 (BAV99) often damaged.

CURE:1. Change capacitor 2912 from 1µF to 100nF(4822 122 33496). 2. Change capacitor 2914 from 100nF to 22nF (5322 122 32654). REMARKS : Production will be corrected from week 9410.

SYMPTOM:Updating of mechanical partslist

CURE:Updating of mechanical partslist Due to many requests the following items are available as normal service spare parts: 5014822 526 20209magnet assembly 5034822 492 42702torsion spring (cd lid) assembly 5044822 532 61224clamping ring for magnet 5064822 410 63072button (open) 5084822 492 52388compression spring (open) 5094822 464 70635subframe 5134822 325 60393rubber sleeve 5164822 410 63071button (shuffle) 5194822 417 11213hinge assembly 5214822 532 52572bearing (hinge 2) 5224822 410 62426set of buttons prev/next 5234822 411 61961knob of slider hold 5244822 464 70636battery frame 5264822 410 62237set of buttons play/stop 5274822 411 61959knob of slider (resume) 5284822 403 30812lever (open) 5294822 411 61962knob of slider (msc)

SYMPTOM:PNC310 battery charger

CURE:PNC310 battery charger We announced further investigations to check the availability of PNC310 battery charger, for stroke versions /01 and /17. Now we have to inform you that we did not succeed within the Philips branded range to find battery chargers to be suited for AZ6813/01/17, AZ6814/01/17, AZ6815/01/07, AZ6823/01/17, AZ6825/01/17. However this is a common article in the market and an equivalent battery charger is expected to be available within the regular photo and brown/white good channels. PNC310 for /00 (4822 218 10551) and /05 (4822 218 10552) still remains available. REMARKS : This publication will not be followed by a service information.

SYMPTOM:Intermittent play

CURE:Intermittent play when + or - pressed, (any pressure on lid causes the problem). This fault was found to be caused by the door switch.

SYMPTOM:Codenumber information

CURE:Codenumber information SBC3397 is Cordless headphone of AZ6819 Electrical partslist SBC3397 The volume potmeter 2x50k A (pos. 3206/3207) is available under service codenumber 4822 102 10467.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:CDM news

CURE:CDM news Production of CDM12.3B (4822 691 30335) will stop at end of 1995. Successor is a low power version CDM12.3BL (4822 691 30359). To substitute CDM12.3BL for CDM12.3B, no other parts change is required. REMARKS : This publication will be followed by Service Information A95-563.

SYMPTOM:Modification

CURE:Modification Compact Disc drive: In sets marked with stamp KT02 9438 another CD mechanism has been mounted. The disc drive has been changed from CDM12.3 into CDM12.3B, service code reads 4822 691 30335. For discdrive CDM12.3 (= turntable with magnet clamper), the mechanical clamper parts items are 409A, 409B and 411. In case this CDM12.3 is replaced by CDM12.3B (= turntable with Ballclamper), the magnet clamper parts are not assembled. REMARKS : Introduction from week 9438 onwards. The only difference between CDM12.3 and CDM12.3B is a modified turntable. While the old drive fixes the CD with the well-known magnet-disc hold down assembly the new CDM12.3B uses a special ball clamp mechanism. As the new turntable influences the regulation characteristic of the servo loop some parameters of the digital servo IC TDA1301 require a different setting. The parameters are stored in the uP of the set and sent to the TDA1301 during the start-up procedure. Proper function of the new CDM12.3B is only guaranteed together with the new software stage of the uP TMP47C820F-AZ6821.2.version 90 displayed in service test program. (service code reads 4822 209 33691) In case the disc drive has to be exchanged in sets equipped with the OTP version TMP47P820F or version TMP47C820F-N904 of the uP with service code 4822 209 32239 (production week 9415 or earlier version 92 is displayed in service test program), only the old discdrive CDM12.3 can be used. For that reason discdrive CDM12.3, with service code 4822 691 20834, will be kept on stock.

SYMPTOM:Modification

CURE:Modification Copper pattern Layout Stage .7 has been introduced. On this printed board connector item 1851 has been exchanged by another type with different pin layout. REMARKS : Introduced in production from week 9424 onwards. For detailed information and drawing see Service Info A94-356.

SYMPTOM:Changes in course of production

CURE:Changes in course of production: - Different CD damper / springs items 419 respectively 421 are used during production. In case of a repair these parts may only be exchanged by the same execution as originally built in the set. REMARKS : For detailed info and drawing see Service Information A94-356.

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B (4822 691 30335) is used. This version is succeeded by a low power version CDM12.3BL, (4822 691 30359) which fully substitutes the CDM12.3B, without any adaption to electronic circuitry. Use CDM12.3BL (4822 691 30359) for these sets, offering higher performance (lower power consumption) at lower price. Above substitution IS NOT POSSIBLE for AZ6846, AZ6847, AZ6848, AZ6850. For these sets CDM12.3B remains available (4822 691 30335). Reason:The disc motor drive circuit of these sets consists of a discrete transistor bridge which is supplied by non-regulated power supply of the set. The lower impedance of disc motor of CDM12.3BL (6 ohms, for CDM12.3B this is 11 ohms) and the floating power supply influence the bandwidth and the gain of the disc motor control loop. In case the sets are supplied with an external AC/DC converter the supply voltage rises and the control loop starts to oscillate. In all other sets the disc motor is driven by one H-bridge of the servo driver IC MPC1715 where the influence of the non-regulated power supply is not critical. REMARKS : This publication has been distributed via following service informations: A95-563: AZ6820, AZ6821, AZ6822, AZ6823 A95-564: AZ6825, AZ6827 A95-561: AZ6830, AZ6831, AZ6832, AZ6833 A95-565: AZ6834, AZ6835, AZ6836 A95-566: AZ6839, AZ6840, AZ6841

SYMPTOM:Totally inoperative.

CURE:Check IC7900 (4822 209 32241) and/or T7951 (4822 130 42615)

SYMPTOM:Bad sound quality or no sound from the CD player.

CURE:Check the mass contact of the headphone socket.

SYMPTOM:Crackling sound from Line Out.

CURE:Check the Line Output socket 1342.

SYMPTOM:CD produces crackling sound because of bad track following.

CURE:Check IC7850 (TDA1301T/N1; 4822 209 31064).

SYMPTOM:CD skips tracks and stops after a few minutes.

CURE:Check the CDM (4822 691 20834).

SYMPTOM:Does not accept any disc.

CURE:The focus coil does not move. Replace CDM (4822 691 20834).

SYMPTOM:Player is totally inoperative.

CURE:The voltage converter IC is defect, this causes a defective uP

SYMPTOM:Sometimes strange characters on display.

CURE:Check processor IC7400 (4822 209 32239).

SYMPTOM:Gives NO DISC indication. Does not find focus.

CURE:Check CDM (4822 691 20834).

SYMPTOM:Does not read in CD. Sledge gets stuck sometimes.

CURE:Check whether the flatcable in RCD is mounted correctly.

SYMPTOM:Modification

CURE:Modification Copper pattern Layout Stage .7 has been introduced. On this printed board connector item 1851 has been exchanged by another type with different pin layout. REMARKS : Introduced in production from week 9424 onwards. For detailed information and drawing see Service Info A94-356.

SYMPTOM:Changes in course of production

CURE:Changes in course of production: - Different CD damper / springs items 419 respectively 421 are used during production. In case of a repair these parts may only be exchanged by the same execution as originally built in the set. REMARKS : For detailed info and drawing see Service Information A94-356.

SYMPTOM:Modification

CURE:Modification Compact Disc drive: In sets marked with stamp KT02 9438 another CD mechanism has been mounted. The disc drive has been changed from CDM12.3 into CDM12.3B, service code reads 4822 691 30335. For discdrive CDM12.3 (= turntable with magnet clamper), the mechanical clamper parts items are 409A, 409B and 411. In case this CDM12.3 is replaced by CDM12.3B (= turntable with Ballclamper), the magnet clamper parts are not assembled. REMARKS : Introduction from week 9438 onwards. The only difference between CDM12.3 and CDM12.3B is a modified turntable. While the old drive fixes the CD with the well-known magnet-disc hold down assembly the new CDM12.3B uses a special ball clamp mechanism. As the new turntable influences the regulation characteristic of the servo loop some parameters of the digital servo IC TDA1301 require a different setting. The parameters are stored in the uP of the set and sent to the TDA1301 during the start-up procedure. Proper function of the new CDM12.3B is only guaranteed together with the new software stage of the uP TMP47C820F-AZ6821.2.version 90 displayed in service test program. (service code reads 4822 209 33691) In case the disc drive has to be exchanged in sets equipped with the OTP version TMP47P820F or version TMP47C820F-N904 of the uP with service code 4822 209 32239 (production week 9415 or earlier version 92 is displayed in service test program), only the old discdrive CDM12.3 can be used. For that reason discdrive CDM12.3, with service code 4822 691 20834, will be kept on stock.

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B (4822 691 30335) is used. This version is succeeded by a low power version CDM12.3BL, (4822 691 30359) which fully substitutes the CDM12.3B, without any adaption to electronic circuitry. Use CDM12.3BL (4822 691 30359) for these sets, offering higher performance (lower power consumption) at lower price. Above substitution IS NOT POSSIBLE for AZ6846, AZ6847, AZ6848, AZ6850. For these sets CDM12.3B remains available (4822 691 30335). Reason:The disc motor drive circuit of these sets consists of a discrete transistor bridge which is supplied by non-regulated power supply of the set. The lower impedance of disc motor of CDM12.3BL (6 ohms, for CDM12.3B this is 11 ohms) and the floating power supply influence the bandwidth and the gain of the disc motor control loop. In case the sets are supplied with an external AC/DC converter the supply voltage rises and the control loop starts to oscillate. In all other sets the disc motor is driven by one H-bridge of the servo driver IC MPC1715 where the influence of the non-regulated power supply is not critical. REMARKS : This publication has been distributed via following service informations: A95-563: AZ6820, AZ6821, AZ6822, AZ6823 A95-564: AZ6825, AZ6827 A95-561: AZ6830, AZ6831, AZ6832, AZ6833 A95-565: AZ6834, AZ6835, AZ6836 A95-566: AZ6839, AZ6840, AZ6841

SYMPTOM:CDM news

CURE:CDM news Production of CDM12.3B (4822 691 30335) will stop at end of 1995. Successor is a low power version CDM12.3BL (4822 691 30359). To substitute CDM12.3BL for CDM12.3B, no other parts change is required. REMARKS : This publication will be followed by Service Information A95-563.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B (4822 691 30335) is used. This version is succeeded by a low power version CDM12.3BL, (4822 691 30359) which fully substitutes the CDM12.3B, without any adaption to electronic circuitry. Use CDM12.3BL (4822 691 30359) for these sets, offering higher performance (lower power consumption) at lower price. Above substitution IS NOT POSSIBLE for AZ6846, AZ6847, AZ6848, AZ6850. For these sets CDM12.3B remains available (4822 691 30335). Reason:The disc motor drive circuit of these sets consists of a discrete transistor bridge which is supplied by non-regulated power supply of the set. The lower impedance of disc motor of CDM12.3BL (6 ohms, for CDM12.3B this is 11 ohms) and the floating power supply influence the bandwidth and the gain of the disc motor control loop. In case the sets are supplied with an external AC/DC converter the supply voltage rises and the control loop starts to oscillate. In all other sets the disc motor is driven by one H-bridge of the servo driver IC MPC1715 where the influence of the non-regulated power supply is not critical. REMARKS : This publication has been distributed via following service informations: A95-563: AZ6820, AZ6821, AZ6822, AZ6823 A95-564: AZ6825, AZ6827 A95-561: AZ6830, AZ6831, AZ6832, AZ6833 A95-565: AZ6834, AZ6835, AZ6836 A95-566: AZ6839, AZ6840, AZ6841

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Changes in course of production:

CURE:Changes in course of production: - Different CD damper / springs items 419 respectively 421 are used during production. In case of a repair these parts may only be exchanged by the same execution as originally built in the set. REMARKS : For detailed info and drawing see Service Information A94-356.

SYMPTOM:Modification

CURE:Modification Copper pattern Layout Stage .7 has been introduced. On this printed board connector item 1851 has been exchanged by another type with different pin layout. REMARKS : Introduced in production from week 9424 onwards. For detailed information and drawing see Service Info A94-356.

SYMPTOM:Modification

CURE:Modification Compact Disc drive: In sets marked with stamp KT02 9438 another CD mechanism has been mounted. The disc drive has been changed from CDM12.3 into CDM12.3B, service code reads 4822 691 30335. For discdrive CDM12.3 (= turntable with magnet clamper), the mechanical clamper parts items are 409A, 409B and 411. In case this CDM12.3 is replaced by CDM12.3B (= turntable with Ballclamper), the magnet clamper parts are not assembled. REMARKS : Introduction from week 9438 onwards. The only difference between CDM12.3 and CDM12.3B is a modified turntable. While the old drive fixes the CD with the well-known magnet-disc hold down assembly the new CDM12.3B uses a special ball clamp mechanism. As the new turntable influences the regulation characteristic of the servo loop some parameters of the digital servo IC TDA1301 require a different setting. The parameters are stored in the uP of the set and sent to the TDA1301 during the start-up procedure. Proper function of the new CDM12.3B is only guaranteed together with the new software stage of the uP TMP47C820F-AZ6821.2.version 90 displayed in service test program. (service code reads 4822 209 33691) In case the disc drive has to be exchanged in sets equipped with the OTP version TMP47P820F or version TMP47C820F-N904 of the uP with service code 4822 209 32239 (production week 9415 or earlier version 92 is displayed in service test program), only the old discdrive CDM12.3 can be used. For that reason discdrive CDM12.3, with service code 4822 691 20834, will be kept on stock.

SYMPTOM:CDM news

CURE:CDM news Production of CDM12.3B (4822 691 30335) will stop at end of 1995. Successor is a low power version CDM12.3BL (4822 691 30359). To substitute CDM12.3BL for CDM12.3B, no other parts change is required. REMARKS : This publication will be followed by Service Information A95-563.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Set inoperative on battery supply.

CURE:Check whether the battery springs are bent. Replace the springs (4822 492 71333).

SYMPTOM:SBC6411 (4822 138 10418) cannot be recharged to nominal voltage.

CURE:This fault is caused by the poor characteristic of this type of battery. It can be solved by replacing this rechargeable SLA battery into 4 NiCd rechargeable batteries. These NiCd batteries have to be inserted into the battery holder (4822 256 60323) delivered with the set. These batteries can (for safety reasons) not be charged in this battery holder of the set. That is why a separate battery charger PNC310 is made available. Complete set of PNC310 battery charger with 4x NiCd-R6/AA/UM3 batteries included: for /00 version (220V & Euro-connector) : 4822 218 10551 for /05 version (240V & UK-connector) : 4822 218 10552 for /17 version (USA) this PNC310-set is under investigation for /01 (multi voltage) this PNC310-set is under investigation Separate 2x NiCd-R6/AA/UM3 batteries are available under: 4822 138 10073. REMARKS : This publication will be followed by a service information A94-562, A94-563, A94-564, A94-565 From June 1994 onwards this modification will be implemented in the produced sets. From that moment onwards the battery charger PNC310 and the NiCd-R6/AA/UM3 rechargeable batteries will be added to the set.

SYMPTOM:Does not read in well. Player gives NO DISC.

CURE:Check whether the focus coil is moving. If not: replace CDM. (4822 691 20834).

SYMPTOM:Inoperative on NiCd accu supply. On battery supply set OK.

CURE:Check ext. DC socket pos.1250 (4822 267 31354).

SYMPTOM:The CD sledge does not move.

CURE:Check the toothed braket of the CDM. Replace CDM (4822 691 20834).

SYMPTOM:Strange echo sound from headphone.

CURE:Check mass connection of headphone socket CN1341 (4822 267 31638).

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B (4822 691 30335) is used. This version is succeeded by a low power version CDM12.3BL, (4822 691 30359) which fully substitutes the CDM12.3B, without any adaption to electronic circuitry. Use CDM12.3BL (4822 691 30359) for these sets, offering higher performance (lower power consumption) at lower price. Above substitution IS NOT POSSIBLE for AZ6846, AZ6847, AZ6848, AZ6850. For these sets CDM12.3B remains available (4822 691 30335). Reason:The disc motor drive circuit of these sets consists of a discrete transistor bridge which is supplied by non-regulated power supply of the set. The lower impedance of disc motor of CDM12.3BL (6 ohms, for CDM12.3B this is 11 ohms) and the floating power supply influence the bandwidth and the gain of the disc motor control loop. In case the sets are supplied with an external AC/DC converter the supply voltage rises and the control loop starts to oscillate. In all other sets the disc motor is driven by one H-bridge of the servo driver IC MPC1715 where the influence of the non-regulated power supply is not critical. REMARKS : This publication has been distributed via following service informations: A95-563: AZ6820, AZ6821, AZ6822, AZ6823 A95-564: AZ6825, AZ6827 A95-561: AZ6830, AZ6831, AZ6832, AZ6833 A95-565: AZ6834, AZ6835, AZ6836 A95-566: AZ6839, AZ6840, AZ6841

SYMPTOM:Changes in course of production

CURE:Changes in course of production: - Different CD damper / springs items 419 respectively 421 are used during production. In case of a repair these parts may only be exchanged by the same execution as originally built in the set. REMARKS : For detailed info and drawing see Service Information A94-356.

SYMPTOM:Modification

CURE:Modification Copper pattern Layout Stage .7 has been introduced. On this printed board connector item 1851 has been exchanged by another type with different pin layout. REMARKS : Introduced in production from week 9424 onwards. For detailed information and drawing see Service Info A94-356.

SYMPTOM:Modification

CURE:Modification Copper pattern Layout Stage .7 has been introduced. On this printed board connector item 1851 has been exchanged by another type with different pin layout. REMARKS : Introduced in production from week 9424 onwards. For detailed information and drawing see Service Info A94-356.

SYMPTOM:Modification

CURE:Modification Compact Disc drive: In sets marked with stamp KT02 9438 another CD mechanism has been mounted. The disc drive has been changed from CDM12.3 into CDM12.3B, service code reads 4822 691 30335. For discdrive CDM12.3 (= turntable with magnet clamper), the mechanical clamper parts items are 409A, 409B and 411. In case this CDM12.3 is replaced by CDM12.3B (= turntable with Ballclamper), the magnet clamper parts are not assembled. REMARKS : Introduction from week 9438 onwards. The only difference between CDM12.3 and CDM12.3B is a modified turntable. While the old drive fixes the CD with the well-known magnet-disc hold down assembly the new CDM12.3B uses a special ball clamp mechanism. As the new turntable influences the regulation characteristic of the servo loop some parameters of the digital servo IC TDA1301 require a different setting. The parameters are stored in the uP of the set and sent to the TDA1301 during the start-up procedure. Proper function of the new CDM12.3B is only guaranteed together with the new software stage of the uP TMP47C820F-AZ6821.2.version 90 displayed in service test program. (service code reads 4822 209 33691) In case the disc drive has to be exchanged in sets equipped with the OTP version TMP47P820F or version TMP47C820F-N904 of the uP with service code 4822 209 32239 (production week 9415 or earlier version 92 is displayed in service test program), only the old discdrive CDM12.3 can be used. For that reason discdrive CDM12.3, with service code 4822 691 20834, will be kept on stock.

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Changes in course of production

CURE:Changes in course of production: - Different CD damper / springs items 419 respectively 421 are used during production. In case of a repair these parts may only be exchanged by the same execution as originally built in the set. REMARKS : For detailed info and drawing see Service Information A94-356.

SYMPTOM:Replacement

CURE:Replacement - From production week 9324 onwards headphone SBC3322 has been replaced by SBC3323V with volume control. Service code for SBC3323V is 4822 015 20623. REMARKS : This publication will be followed by service information A94-356.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:CDM news

CURE:CDM news Production of CDM12.3B (4822 691 30335) will stop at end of 1995. Successor is a low power version CDM12.3BL (4822 691 30359). To substitute CDM12.3BL for CDM12.3B, no other parts change is required. REMARKS : This publication will be followed by Service Information A95-563.

SYMPTOM:PNC310 battery charger

CURE:PNC310 battery charger We announced further investigations to check the availability of PNC310 battery charger, for stroke versions /01 and /17. Now we have to inform you that we did not succeed within the Philips branded range to find battery chargers to be suited for AZ6813/01/17, AZ6814/01/17, AZ6815/01/07, AZ6823/01/17, AZ6825/01/17. However this is a common article in the market and an equivalent battery charger is expected to be available within the regular photo and brown/white good channels. PNC310 for /00 (4822 218 10551) and /05 (4822 218 10552) still remains available. REMARKS : This publication will not be followed by a service information.

SYMPTOM:Modification

CURE:Modification Compact Disc drive: In sets marked with stamp KT02 9438 another CD mechanism has been mounted. The disc drive has been changed from CDM12.3 into CDM12.3B, service code reads 4822 691 30335. For discdrive CDM12.3 (= turntable with magnet clamper), the mechanical clamper parts items are 409A, 409B and 411. In case this CDM12.3 is replaced by CDM12.3B (= turntable with Ballclamper), the magnet clamper parts are not assembled. REMARKS : Introduction from week 9438 onwards. The only difference between CDM12.3 and CDM12.3B is a modified turntable. While the old drive fixes the CD with the well-known magnet-disc hold down assembly the new CDM12.3B uses a special ball clamp mechanism. As the new turntable influences the regulation characteristic of the servo loop some parameters of the digital servo IC TDA1301 require a different setting. The parameters are stored in the uP of the set and sent to the TDA1301 during the start-up procedure. Proper function of the new CDM12.3B is only guaranteed together with the new software stage of the uP TMP47C820F-AZ6821.2.version 90 displayed in service test program. (service code reads 4822 209 33691) In case the disc drive has to be exchanged in sets equipped with the OTP version TMP47P820F or version TMP47C820F-N904 of the uP with service code 4822 209 32239 (production week 9415 or earlier version 92 is displayed in service test program), only the old discdrive CDM12.3 can be used. For that reason discdrive CDM12.3, with service code 4822 691 20834, will be kept on stock.

SYMPTOM:SBC6411 (4822 138 10418) cannot be recharged to nominal voltage.

CURE:This fault is caused by the poor characteristic of this type of battery. It can be solved by replacing this rechargeable SLA battery into 4 NiCd rechargeable batteries. These NiCd batteries have to be inserted into the battery holder (4822 256 60323) delivered with the set. These batteries can (for safety reasons) not be charged in this battery holder of the set. That is why a separate battery charger PNC310 is made available. Complete set of PNC310 battery charger with 4x NiCd-R6/AA/UM3 batteries included: for /00 version (220V & Euro-connector) : 4822 218 10551 for /05 version (240V & UK-connector) : 4822 218 10552 for /17 version (USA) this PNC310-set is under investigation for /01 (multi voltage) this PNC310-set is under investigation Separate 2x NiCd-R6/AA/UM3 batteries are available under: 4822 138 10073. REMARKS : This publication will be followed by a service information A94-562, A94-563, A94-564, A94-565 From June 1994 onwards this modification will be implemented in the produced sets. From that moment onwards the battery charger PNC310 and the NiCd-R6/AA/UM3 rechargeable batteries will be added to the set.

SYMPTOM:Disc motor turns in STOP mode

CURE:Due to tolerance problems it may happen, that the disc motor turns very slow in STOP mode. This is the time between pressing stop and automatic switch off from the set. (about 10 seconds) To avoid this phenomenon resistor 3922 has been changed to 3k9. Service code 4822 051 20392.

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B (4822 691 30335) is used. This version is succeeded by a low power version CDM12.3BL, (4822 691 30359) which fully substitutes the CDM12.3B, without any adaption to electronic circuitry. Use CDM12.3BL (4822 691 30359) for these sets, offering higher performance (lower power consumption) at lower price. Above substitution IS NOT POSSIBLE for AZ6846, AZ6847, AZ6848, AZ6850. For these sets CDM12.3B remains available (4822 691 30335). Reason:The disc motor drive circuit of these sets consists of a discrete transistor bridge which is supplied by non-regulated power supply of the set. The lower impedance of disc motor of CDM12.3BL (6 ohms, for CDM12.3B this is 11 ohms) and the floating power supply influence the bandwidth and the gain of the disc motor control loop. In case the sets are supplied with an external AC/DC converter the supply voltage rises and the control loop starts to oscillate. In all other sets the disc motor is driven by one H-bridge of the servo driver IC MPC1715 where the influence of the non-regulated power supply is not critical. REMARKS : This publication has been distributed via following service informations: A95-563: AZ6820, AZ6821, AZ6822, AZ6823 A95-564: AZ6825, AZ6827 A95-561: AZ6830, AZ6831, AZ6832, AZ6833 A95-565: AZ6834, AZ6835, AZ6836 A95-566: AZ6839, AZ6840, AZ6841

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:PNC310 battery charger

CURE:PNC310 battery charger We announced further investigations to check the availability of PNC310 battery charger, for stroke versions /01 and /17. Now we have to inform you that we did not succeed within the Philips branded range to find battery chargers to be suited for AZ6813/01/17, AZ6814/01/17, AZ6815/01/07, AZ6823/01/17, AZ6825/01/17. However this is a common article in the market and an equivalent battery charger is expected to be available within the regular photo and brown/white good channels. PNC310 for /00 (4822 218 10551) and /05 (4822 218 10552) still remains available. REMARKS : This publication will not be followed by a service information.

SYMPTOM:CDM news

CURE:CDM news Production of CDM12.3B (4822 691 30335) will stop at end of 1995. Successor is a low power version CDM12.3BL (4822 691 30359). To substitute CDM12.3BL for CDM12.3B, no other parts change is required. REMARKS : This publication will be followed by Service Information A95-564.

SYMPTOM:Bad sound CD-out and phone-out.

CURE:Check sockets.

SYMPTOM:No sound from the CD player.

CURE:Check soldering pins of IC7805.

SYMPTOM:CD does not read the TOC. The CD does not turn.

CURE:Check RCD (4822 691 30295).

SYMPTOM:Does not accept any CD. Gives ERROR.

CURE:Check RCD. (4822 691 30295).

SYMPTOM:CD skips tracks at higher tracks.

CURE:Check RCD. (4822 691 30295).

SYMPTOM:Inoperative. No focus finding, no rotation.

CURE:Blue wire from modification PCB might be loose.

SYMPTOM:Oscillating of the focus loop at 500Hz

CURE:In focus amplifier circuit some components are added on a separate small printed board to prevent oscillating of the focussignal. This is connected between testpoint T311 and T312, with a splitted signal to T275. The small printed board consists of the following components: in series 3 resistors between T311 and T312 respectively 3882 (4k7), 3883 (4k7) and 3849 (18k). Parallel to 3882 + 3883 a capacitor 2878 (68nF) has been mounted. On the junction of 3882 and 3883 one lead of a capacitor 2879 (220nF) is connected. The other lead of the capacitor is connected to testpoint T275 (or junction of 2811 and 2814 on main part). REMARKS: This publication will be followed by a service information

SYMPTOM:Remote control SBC6225 mentioned in IFU cannot be used with AZ6827.

CURE:AZ6827 was not designed to be used with remote control SBC6225. However, if a customer has bought a SBC6225 and asks for service assistance, the next actions will solve the problem. * change resistor3888 from 220k to 47k (4822 051 20473) * change capacitor 2845 from 220p to 1n5 (5322 122 31865) REMARKS : SBC6225 will be removed from accessories list in the new IFU issue.

SYMPTOM:Disc motor turns in STOP mode

CURE:Due to tolerance problems it may happen, that the disc motor turns very slow in STOP mode. This is the time between pressing stop and automatic switch off from the set. (about 10 seconds) To avoid this phenomenon resistor 3922 has been changed to 3k9. Service code 4822 051 20392.

SYMPTOM:Spare part information

CURE:Spare part information As the Front Panel 4822 444 30473 is no longer available, it can be replaced by 4822 444 30472. For colour matching reason, it is suggested to replace also the CD Door by existing CD Door 4822 444 60932.

SYMPTOM:CDM news

CURE:CDM news Production of CDM12.3B (4822 691 30335) will stop at end of 1995. Successor is a low power version CDM12.3BL (4822 691 30359). To substitute CDM12.3BL for CDM12.3B, no other parts change is required. REMARKS : This publication will be followed by Service Information A95-564.

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B (4822 691 30335) is used. This version is succeeded by a low power version CDM12.3BL, (4822 691 30359) which fully substitutes the CDM12.3B, without any adaption to electronic circuitry. Use CDM12.3BL (4822 691 30359) for these sets, offering higher performance (lower power consumption) at lower price. Above substitution IS NOT POSSIBLE for AZ6846, AZ6847, AZ6848, AZ6850. For these sets CDM12.3B remains available (4822 691 30335). Reason:The disc motor drive circuit of these sets consists of a discrete transistor bridge which is supplied by non-regulated power supply of the set. The lower impedance of disc motor of CDM12.3BL (6 ohms, for CDM12.3B this is 11 ohms) and the floating power supply influence the bandwidth and the gain of the disc motor control loop. In case the sets are supplied with an external AC/DC converter the supply voltage rises and the control loop starts to oscillate. In all other sets the disc motor is driven by one H-bridge of the servo driver IC MPC1715 where the influence of the non-regulated power supply is not critical. REMARKS : This publication has been distributed via following service informations: A95-563: AZ6820, AZ6821, AZ6822, AZ6823 A95-564: AZ6825, AZ6827 A95-561: AZ6830, AZ6831, AZ6832, AZ6833 A95-565: AZ6834, AZ6835, AZ6836 A95-566: AZ6839, AZ6840, AZ6841

SYMPTOM:Spare part information

CURE:Spare part information The Button Set-STOP 4822 410 62757 is not available.It can be replaced by 4822 410 62754.For colour matching reason, the following substitutions are suggested: Button Set-PLAY, 4822 410 62758 is replaced by 4822 410 62755 Eject Button,4822 410 62752 is replaced by 4822 410 62751

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Stops, intermediate faults.

CURE:Check Vg pin 19 (MPC1715). Replace capacitor 2908 (1 uF 4822 126 11692) and capacitor 2907 (100 nF 4822 122 33496).

SYMPTOM:Does not start.

CURE:Laser supply. Check the bias pin 15 (MPC1715). Replace capacitor 2905 (1 uF). 4822 126 11692

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Preventive action in case of defective laser

CURE:Preventive action in case of defective laser Before replacing the CDM, replace capacitor 2914 (1 uF 4822 126 11692). If this capacitor starts leaking (feedback of the laser control), the laser will be destroyed.

SYMPTOM:Codenumber information

CURE:Codenumber information The Battery Door is available with service code number 4822 444 60911.

SYMPTOM:CDM news

CURE:CDM news Production of CDM12.3B (4822 691 30335) will stop at end of 1995. Successor is a low power version CDM12.3BL (4822 691 30359). To substitute CDM12.3BL for CDM12.3B, no other parts change is required. REMARKS : This publication will be followed by Service Information A95-561.

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B (4822 691 30335) is used. This version is succeeded by a low power version CDM12.3BL, (4822 691 30359) which fully substitutes the CDM12.3B, without any adaption to electronic circuitry. Use CDM12.3BL (4822 691 30359) for these sets, offering higher performance (lower power consumption) at lower price. Above substitution IS NOT POSSIBLE for AZ6846, AZ6847, AZ6848, AZ6850. For these sets CDM12.3B remains available (4822 691 30335). Reason:The disc motor drive circuit of these sets consists of a discrete transistor bridge which is supplied by non-regulated power supply of the set. The lower impedance of disc motor of CDM12.3BL (6 ohms, for CDM12.3B this is 11 ohms) and the floating power supply influence the bandwidth and the gain of the disc motor control loop. In case the sets are supplied with an external AC/DC converter the supply voltage rises and the control loop starts to oscillate. In all other sets the disc motor is driven by one H-bridge of the servo driver IC MPC1715 where the influence of the non-regulated power supply is not critical. REMARKS : This publication has been distributed via following service informations: A95-563: AZ6820, AZ6821, AZ6822, AZ6823 A95-564: AZ6825, AZ6827 A95-561: AZ6830, AZ6831, AZ6832, AZ6833 A95-565: AZ6834, AZ6835, AZ6836 A95-566: AZ6839, AZ6840, AZ6841

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B (4822 691 30335) is used. This version is succeeded by a low power version CDM12.3BL, (4822 691 30359) which fully substitutes the CDM12.3B, without any adaption to electronic circuitry. Use CDM12.3BL (4822 691 30359) for these sets, offering higher performance (lower power consumption) at lower price. Above substitution IS NOT POSSIBLE for AZ6846, AZ6847, AZ6848, AZ6850. For these sets CDM12.3B remains available (4822 691 30335). Reason:The disc motor drive circuit of these sets consists of a discrete transistor bridge which is supplied by non-regulated power supply of the set. The lower impedance of disc motor of CDM12.3BL (6 ohms, for CDM12.3B this is 11 ohms) and the floating power supply influence the bandwidth and the gain of the disc motor control loop. In case the sets are supplied with an external AC/DC converter the supply voltage rises and the control loop starts to oscillate. In all other sets the disc motor is driven by one H-bridge of the servo driver IC MPC1715 where the influence of the non-regulated power supply is not critical. REMARKS : This publication has been distributed via following service informations: A95-563: AZ6820, AZ6821, AZ6822, AZ6823 A95-564: AZ6825, AZ6827 A95-561: AZ6830, AZ6831, AZ6832, AZ6833 A95-565: AZ6834, AZ6835, AZ6836 A95-566: AZ6839, AZ6840, AZ6841

SYMPTOM:Codenumber information

CURE:Codenumber information The Battery Door is available with service code number 4822 444 60911.

SYMPTOM:CDM news

CURE:CDM news Production of CDM12.3B (4822 691 30335) will stop at end of 1995. Successor is a low power version CDM12.3BL (4822 691 30359). To substitute CDM12.3BL for CDM12.3B, no other parts change is required. REMARKS : This publication will be followed by Service Information A95-561.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B (4822 691 30335) is used. This version is succeeded by a low power version CDM12.3BL, (4822 691 30359) which fully substitutes the CDM12.3B, without any adaption to electronic circuitry. Use CDM12.3BL (4822 691 30359) for these sets, offering higher performance (lower power consumption) at lower price. Above substitution IS NOT POSSIBLE for AZ6846, AZ6847, AZ6848, AZ6850. For these sets CDM12.3B remains available (4822 691 30335). Reason:The disc motor drive circuit of these sets consists of a discrete transistor bridge which is supplied by non-regulated power supply of the set. The lower impedance of disc motor of CDM12.3BL (6 ohms, for CDM12.3B this is 11 ohms) and the floating power supply influence the bandwidth and the gain of the disc motor control loop. In case the sets are supplied with an external AC/DC converter the supply voltage rises and the control loop starts to oscillate. In all other sets the disc motor is driven by one H-bridge of the servo driver IC MPC1715 where the influence of the non-regulated power supply is not critical. REMARKS : This publication has been distributed via following service informations: A95-563: AZ6820, AZ6821, AZ6822, AZ6823 A95-564: AZ6825, AZ6827 A95-561: AZ6830, AZ6831, AZ6832, AZ6833 A95-565: AZ6834, AZ6835, AZ6836 A95-566: AZ6839, AZ6840, AZ6841

SYMPTOM:CDM news

CURE:CDM news Production of CDM12.3B (4822 691 30335) will stop at end of 1995. Successor is a low power version CDM12.3BL (4822 691 30359). To substitute CDM12.3BL for CDM12.3B, no other parts change is required. REMARKS : This publication will be followed by Service Information A95-561.

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Codenumber information

CURE:Codenumber information The Battery Door is available with service code number 4822 444 60911.

SYMPTOM:CDM news

CURE:CDM news Production of CDM12.3B (4822 691 30335) will stop at end of 1995. Successor is a low power version CDM12.3BL (4822 691 30359). To substitute CDM12.3BL for CDM12.3B, no other parts change is required. REMARKS : This publication will be followed by Service Information A95-561.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B (4822 691 30335) is used. This version is succeeded by a low power version CDM12.3BL, (4822 691 30359) which fully substitutes the CDM12.3B, without any adaption to electronic circuitry. Use CDM12.3BL (4822 691 30359) for these sets, offering higher performance (lower power consumption) at lower price. Above substitution IS NOT POSSIBLE for AZ6846, AZ6847, AZ6848, AZ6850. For these sets CDM12.3B remains available (4822 691 30335). Reason:The disc motor drive circuit of these sets consists of a discrete transistor bridge which is supplied by non-regulated power supply of the set. The lower impedance of disc motor of CDM12.3BL (6 ohms, for CDM12.3B this is 11 ohms) and the floating power supply influence the bandwidth and the gain of the disc motor control loop. In case the sets are supplied with an external AC/DC converter the supply voltage rises and the control loop starts to oscillate. In all other sets the disc motor is driven by one H-bridge of the servo driver IC MPC1715 where the influence of the non-regulated power supply is not critical. REMARKS : This publication has been distributed via following service informations: A95-563: AZ6820, AZ6821, AZ6822, AZ6823 A95-564: AZ6825, AZ6827 A95-561: AZ6830, AZ6831, AZ6832, AZ6833 A95-565: AZ6834, AZ6835, AZ6836 A95-566: AZ6839, AZ6840, AZ6841

SYMPTOM:Codenumber information

CURE:Codenumber information The Battery Door is available with service code number 4822 444 60911.

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Cannot start up with 8 cm disc

CURE:Problem can be solved by changing the following parts : 1. Replace 2920 1uF by 220nF/63V (4822 122 32927). 2. Replace 3921 2k2 by 10k (4822 117 11846).

SYMPTOM:The CD player is sometimes not able to read the TOC.

CURE:Check soldering points of IC7850.

SYMPTOM:CDM news

CURE:CDM news Production of CDM12.3B (4822 691 30335) will stop at end of 1995. Successor is a low power version CDM12.3BL (4822 691 30359). To substitute CDM12.3BL for CDM12.3B, no other parts change is required. REMARKS : This publication will be followed by Service Information A95-565.

SYMPTOM:Service Manual correction

CURE:Service Manual correction - To improve and secure TOC reading capability, the resistors 3872 and 3873 are deleted. REMARKS : This modification has been implemented in production from production start onwards.

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B (4822 691 30335) is used. This version is succeeded by a low power version CDM12.3BL, (4822 691 30359) which fully substitutes the CDM12.3B, without any adaption to electronic circuitry. Use CDM12.3BL (4822 691 30359) for these sets, offering higher performance (lower power consumption) at lower price. Above substitution IS NOT POSSIBLE for AZ6846, AZ6847, AZ6848, AZ6850. For these sets CDM12.3B remains available (4822 691 30335). Reason:The disc motor drive circuit of these sets consists of a discrete transistor bridge which is supplied by non-regulated power supply of the set. The lower impedance of disc motor of CDM12.3BL (6 ohms, for CDM12.3B this is 11 ohms) and the floating power supply influence the bandwidth and the gain of the disc motor control loop. In case the sets are supplied with an external AC/DC converter the supply voltage rises and the control loop starts to oscillate. In all other sets the disc motor is driven by one H-bridge of the servo driver IC MPC1715 where the influence of the non-regulated power supply is not critical. REMARKS : This publication has been distributed via following service informations: A95-563: AZ6820, AZ6821, AZ6822, AZ6823 A95-564: AZ6825, AZ6827 A95-561: AZ6830, AZ6831, AZ6832, AZ6833 A95-565: AZ6834, AZ6835, AZ6836 A95-566: AZ6839, AZ6840, AZ6841

SYMPTOM:Correction

CURE:Correction The accessory SBC3546 stated in IFU or service manual is not correct. The car base SBC3546 cannot hold the CD portable models from AZ6830 until AZ6850. To mount these CD portable sets in a car, it is suggested to order car base SBC6560 (4822 466 93339) and car base adaptor SBC6562 (4822 466 93338 for Magnavox or 4822 466 93437 for Philips Modelnumbers).

SYMPTOM:NiCd batteries SBC6445 cannot be re-charged in the set.

CURE:Reason for malfunction can either be: Bad contact of accu detection springs (especially spring contact via cabinet part) or over-discharge of NiCd batteries (voltage on battery is lower than 0.9V). In both cases the microcontroller will never switch on charging because the accu_in line from the accu detection circuit remains low, assuming no accus inserted. The solution is : 1. Replace D6251 by a SMD jumper (4822 051 20008) 2. Desolder T7282 5. Short-circuit collector/emittor line of T7282 by use of SMD jumpers (4822 051 20008) Item 417 Spring-Detection Mid (4822 492 71605) is not used. WARNING Above mentioned modification disables accu detection at two battery positions. As a result also normal batteries can now be charged by the circuit, if they are inserted in those positions. These batteries may become leak and damage the CD-electronics. CUSTOMERS MUST THEREFORE BE INSTRUCTED NOT TO MIX-UP DIFFERENT BATTERY TYPES!! REMARKS : This phenomenon has already been published in newsletter 65 and 96.04.05. However the concerned components were not indicated clearly. The service solution stated in this edition could not solve all recharging complaints in the field. The new modifications will further improve the detection behaviour. It is possible that completely discharged accus (voltage around 0V) cannot be recharged anymore. For completely discharged accus an external charger can be used. If problems remain, customers should be informed to charge accus even if the set is not in use for a longer period of time. IMPORTANT NOTE: It is advised to modify all sets brought-in for repair.

SYMPTOM:Cannot start up with 8 cm disc

CURE:Problem can be solved by changing the following parts : 1. Replace 2920 1uF by 220nF/63V (4822 122 32927). 2. Replace 3921 2k2 by 10k (4822 117 11846).

SYMPTOM:The CD player can not read the TOC.

CURE:The axle is loose at the turntablemotor side.

SYMPTOM:The CD player does not produce any sound.

CURE:Check/replace DAC IC7835 (TDA1545AT/N2; 4822 209 33164).

SYMPTOM:Speed turntablemotor too high. In service mode the motor always runs

CURE:Voltage at pin 37 of IC7900 too low: 1.7V. Replace capacitor C2920.

SYMPTOM:Play knob stucks and does not release after pushing in.

CURE:Clean dirt between play knob pos.411 and front panel.

SYMPTOM:Service Manual correction

CURE:Service Manual correction - To improve and secure TOC reading capability, the resistors 3872 and 3873 are deleted. REMARKS : This modification has been implemented in production from production start onwards.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:CDM news

CURE:CDM news Production of CDM12.3B (4822 691 30335) will stop at end of 1995. Successor is a low power version CDM12.3BL (4822 691 30359). To substitute CDM12.3BL for CDM12.3B, no other parts change is required. REMARKS : This publication will be followed by Service Information A95-565.

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B (4822 691 30335) is used. This version is succeeded by a low power version CDM12.3BL, (4822 691 30359) which fully substitutes the CDM12.3B, without any adaption to electronic circuitry. Use CDM12.3BL (4822 691 30359) for these sets, offering higher performance (lower power consumption) at lower price. Above substitution IS NOT POSSIBLE for AZ6846, AZ6847, AZ6848, AZ6850. For these sets CDM12.3B remains available (4822 691 30335). Reason:The disc motor drive circuit of these sets consists of a discrete transistor bridge which is supplied by non-regulated power supply of the set. The lower impedance of disc motor of CDM12.3BL (6 ohms, for CDM12.3B this is 11 ohms) and the floating power supply influence the bandwidth and the gain of the disc motor control loop. In case the sets are supplied with an external AC/DC converter the supply voltage rises and the control loop starts to oscillate. In all other sets the disc motor is driven by one H-bridge of the servo driver IC MPC1715 where the influence of the non-regulated power supply is not critical. REMARKS : This publication has been distributed via following service informations: A95-563: AZ6820, AZ6821, AZ6822, AZ6823 A95-564: AZ6825, AZ6827 A95-561: AZ6830, AZ6831, AZ6832, AZ6833 A95-565: AZ6834, AZ6835, AZ6836 A95-566: AZ6839, AZ6840, AZ6841

SYMPTOM:Correction

CURE:Correction The accessory SBC3546 stated in IFU or service manual is not correct. The car base SBC3546 cannot hold the CD portable models from AZ6830 until AZ6850. To mount these CD portable sets in a car, it is suggested to order car base SBC6560 (4822 466 93339) and car base adaptor SBC6562 (4822 466 93338 for Magnavox or 4822 466 93437 for Philips Modelnumbers).

SYMPTOM:NiCd batteries SBC6445 cannot be re-charged in the set.

CURE:If the voltage of the first NiCd battery is lower than 0.5V, the detection circuit will switch off the charging loop. The solution is : Replace diode 6252 by a SMD 0R jumper (4822 051 20008). REMARKS : This modification has been implemented in production from week 9546 onwards.

SYMPTOM:Cannot start up with 8 cm disc

CURE:Problem can be solved by changing the following parts : 1. Replace 2920 1uF by 220nF/63V (4822 122 32927). 2. Replace 3921 2k2 by 10k (4822 117 11846).

SYMPTOM:CDM news

CURE:CDM news Production of CDM12.3B (4822 691 30335) will stop at end of 1995. Successor is a low power version CDM12.3BL (4822 691 30359). To substitute CDM12.3BL for CDM12.3B, no other parts change is required. REMARKS : This publication will be followed by Service Information A95-565.

SYMPTOM:Service Manual correction

CURE:Service Manual correction - To improve and secure TOC reading capability, the resistors 3872 and 3873 are deleted. REMARKS : This modification has been implemented in production from production start onwards.

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B (4822 691 30335) is used. This version is succeeded by a low power version CDM12.3BL, (4822 691 30359) which fully substitutes the CDM12.3B, without any adaption to electronic circuitry. Use CDM12.3BL (4822 691 30359) for these sets, offering higher performance (lower power consumption) at lower price. Above substitution IS NOT POSSIBLE for AZ6846, AZ6847, AZ6848, AZ6850. For these sets CDM12.3B remains available (4822 691 30335). Reason:The disc motor drive circuit of these sets consists of a discrete transistor bridge which is supplied by non-regulated power supply of the set. The lower impedance of disc motor of CDM12.3BL (6 ohms, for CDM12.3B this is 11 ohms) and the floating power supply influence the bandwidth and the gain of the disc motor control loop. In case the sets are supplied with an external AC/DC converter the supply voltage rises and the control loop starts to oscillate. In all other sets the disc motor is driven by one H-bridge of the servo driver IC MPC1715 where the influence of the non-regulated power supply is not critical. REMARKS : This publication has been distributed via following service informations: A95-563: AZ6820, AZ6821, AZ6822, AZ6823 A95-564: AZ6825, AZ6827 A95-561: AZ6830, AZ6831, AZ6832, AZ6833 A95-565: AZ6834, AZ6835, AZ6836 A95-566: AZ6839, AZ6840, AZ6841

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Correction

CURE:Correction The accessory SBC3546 stated in IFU or service manual is not correct. The car base SBC3546 cannot hold the CD portable models from AZ6830 until AZ6850. To mount these CD portable sets in a car, it is suggested to order car base SBC6560 (4822 466 93339) and car base adaptor SBC6562 (4822 466 93338 for Magnavox or 4822 466 93437 for Philips Modelnumbers).

SYMPTOM:Cannot start up with 8 cm disc

CURE:Problem can be solved by changing the following parts : 1. Replace 2920 1uF by 220nF/63V (4822 122 32927). 2. Replace 3921 2k2 by 10k (4822 117 11846).

SYMPTOM:Service Manual correction

CURE:Service Manual correction - To improve and secure TOC reading capability, the resistors 3872 and 3873 are deleted. REMARKS : This modification has been implemented in production from production start onwards.

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Correction

CURE:Correction The accessory SBC3546 stated in IFU or service manual is not correct. The car base SBC3546 cannot hold the CD portable models from AZ6830 until AZ6850. To mount these CD portable sets in a car, it is suggested to order car base SBC6560 (4822 466 93339) and car base adaptor SBC6562 (4822 466 93338 for Magnavox or 4822 466 93437 for Philips Modelnumbers).

SYMPTOM:Skips tracks. Disc turns counter-clockwise in service test mode

CURE:Replace capacitors 2911 and 2912 by 4822 124 80483 (47uF). The fault is caused by the capacitors which become defective because of the high ripple current in the feedback loop of the DC/DC-converter. The new capacitors are specified for a higher ripple current. REMARKS : The modification is built-in in sets, produced from production week 9439 onwards. Important note: Whenever sets with an earlier production date are brought in for repair the capacitors should be exchanged as preventive action.

SYMPTOM:CDM news

CURE:CDM news Production of CDM12.3B (4822 691 30335) will stop at end of 1995. Successor is a low power version CDM12.3BL (4822 691 30359). To substitute CDM12.3BL for CDM12.3B, no other parts change is required. REMARKS : This publication will be followed by Service Information A95-566.

SYMPTOM:Codenumber information

CURE:Codenumber information The Battery Door is available with service code number 4822 444 60911.

SYMPTOM:Service hints:

CURE:Service hints: In case of servo faults in these sets it is advised to check first the functioning of the capacitors 2911 and 2912, before replacing the IC MPC1715 (item 7900). Please exchange first items 2911 and 2912, both electrolytic capacitors of 47uF (4822 124 80483), to check if this causes the failure. In case these capacitors are of value 4u7, change those into 47uF as stated in newsletter 53.01 and check again the servo functions.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B (4822 691 30335) is used. This version is succeeded by a low power version CDM12.3BL, (4822 691 30359) which fully substitutes the CDM12.3B, without any adaption to electronic circuitry. Use CDM12.3BL (4822 691 30359) for these sets, offering higher performance (lower power consumption) at lower price. Above substitution IS NOT POSSIBLE for AZ6846, AZ6847, AZ6848, AZ6850. For these sets CDM12.3B remains available (4822 691 30335). Reason:The disc motor drive circuit of these sets consists of a discrete transistor bridge which is supplied by non-regulated power supply of the set. The lower impedance of disc motor of CDM12.3BL (6 ohms, for CDM12.3B this is 11 ohms) and the floating power supply influence the bandwidth and the gain of the disc motor control loop. In case the sets are supplied with an external AC/DC converter the supply voltage rises and the control loop starts to oscillate. In all other sets the disc motor is driven by one H-bridge of the servo driver IC MPC1715 where the influence of the non-regulated power supply is not critical. REMARKS : This publication has been distributed via following service informations: A95-563: AZ6820, AZ6821, AZ6822, AZ6823 A95-564: AZ6825, AZ6827 A95-561: AZ6830, AZ6831, AZ6832, AZ6833 A95-565: AZ6834, AZ6835, AZ6836 A95-566: AZ6839, AZ6840, AZ6841

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Service hints

CURE:Service hints - Before the CDM12.3 (4822 691 20843, magnetic clamper version and 4822 691 30335, ball clamper version) should be exchanged, make sure that the flex foil connector on the board is in a good contact with the flex foil cable of CDM12.3. If necessary clean the connections of the flex foil.

SYMPTOM:CD player gives error and CD turns the wrong way around.

CURE:Replace C2911 and C2912.

SYMPTOM:Stops, intermediate faults.

CURE:Check Vg pin 19 (MPC1715). Replace capacitor 2908 (1 uF 4822 126 11692) and capacitor 2907 (100 nF 4822 122 33496).

SYMPTOM:Does not start.

CURE:Laser supply. Check the bias pin 15 (MPC1715). Replace capacitor 2905 (1 uF). 4822 126 11692

SYMPTOM:Voices are far in the background, only music in the foreground.

CURE:Coil L5340 defective

SYMPTOM:CD does not start up, no laser light.

CURE:Check/replace IC7900, T7904 and T7905.

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B (4822 691 30335) is used. This version is succeeded by a low power version CDM12.3BL, (4822 691 30359) which fully substitutes the CDM12.3B, without any adaption to electronic circuitry. Use CDM12.3BL (4822 691 30359) for these sets, offering higher performance (lower power consumption) at lower price. Above substitution IS NOT POSSIBLE for AZ6846, AZ6847, AZ6848, AZ6850. For these sets CDM12.3B remains available (4822 691 30335). Reason:The disc motor drive circuit of these sets consists of a discrete transistor bridge which is supplied by non-regulated power supply of the set. The lower impedance of disc motor of CDM12.3BL (6 ohms, for CDM12.3B this is 11 ohms) and the floating power supply influence the bandwidth and the gain of the disc motor control loop. In case the sets are supplied with an external AC/DC converter the supply voltage rises and the control loop starts to oscillate. In all other sets the disc motor is driven by one H-bridge of the servo driver IC MPC1715 where the influence of the non-regulated power supply is not critical. REMARKS : This publication has been distributed via following service informations: A95-563: AZ6820, AZ6821, AZ6822, AZ6823 A95-564: AZ6825, AZ6827 A95-561: AZ6830, AZ6831, AZ6832, AZ6833 A95-565: AZ6834, AZ6835, AZ6836 A95-566: AZ6839, AZ6840, AZ6841

SYMPTOM:Codenumber information

CURE:Codenumber information The Battery Door is available with service code number 4822 444 60911.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Service hints:

CURE:Service hints: In case of servo faults in these sets it is advised to check first the functioning of the capacitors 2911 and 2912, before replacing the IC MPC1715 (item 7900). Please exchange first items 2911 and 2912, both electrolytic capacitors of 47uF (4822 124 80483), to check if this causes the failure. In case these capacitors are of value 4u7, change those into 47uF as stated in newsletter 53.01 and check again the servo functions.

SYMPTOM:Preventive action in case of defective laser

CURE:Preventive action in case of defective laser Before replacing the CDM, replace capacitor 2914 (1 uF 4822 126 11692). If this capacitor starts leaking (feedback of the laser control), the laser will be destroyed.

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:CDM news

CURE:CDM news Production of CDM12.3B (4822 691 30335) will stop at end of 1995. Successor is a low power version CDM12.3BL (4822 691 30359). To substitute CDM12.3BL for CDM12.3B, no other parts change is required. REMARKS : This publication will be followed by Service Information A95-566.

SYMPTOM:Service hints

CURE:Service hints - Before the CDM12.3 (4822 691 20843, magnetic clamper version and 4822 691 30335, ball clamper version) should be exchanged, make sure that the flex foil connector on the board is in a good contact with the flex foil cable of CDM12.3. If necessary clean the connections of the flex foil.

SYMPTOM:Skips tracks. Disc turns counter-clockwise in service test mode

CURE:Replace capacitors 2911 and 2912 by 4822 124 80483 (47uF). The fault is caused by the capacitors which become defective because of the high ripple current in the feedback loop of the DC/DC-converter. The new capacitors are specified for a higher ripple current. REMARKS : The modification is built-in in sets, produced from production week 9439 onwards. Important note: Whenever sets with an earlier production date are brought in for repair the capacitors should be exchanged as preventive action.

SYMPTOM:CD player very shock sensitive.

CURE:Check if pos 411 (mounting ring of pressure plate) is mounted well

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B (4822 691 30335) is used. This version is succeeded by a low power version CDM12.3BL, (4822 691 30359) which fully substitutes the CDM12.3B, without any adaption to electronic circuitry. Use CDM12.3BL (4822 691 30359) for these sets, offering higher performance (lower power consumption) at lower price. Above substitution IS NOT POSSIBLE for AZ6846, AZ6847, AZ6848, AZ6850. For these sets CDM12.3B remains available (4822 691 30335). Reason:The disc motor drive circuit of these sets consists of a discrete transistor bridge which is supplied by non-regulated power supply of the set. The lower impedance of disc motor of CDM12.3BL (6 ohms, for CDM12.3B this is 11 ohms) and the floating power supply influence the bandwidth and the gain of the disc motor control loop. In case the sets are supplied with an external AC/DC converter the supply voltage rises and the control loop starts to oscillate. In all other sets the disc motor is driven by one H-bridge of the servo driver IC MPC1715 where the influence of the non-regulated power supply is not critical. REMARKS : This publication has been distributed via following service informations: A95-563: AZ6820, AZ6821, AZ6822, AZ6823 A95-564: AZ6825, AZ6827 A95-561: AZ6830, AZ6831, AZ6832, AZ6833 A95-565: AZ6834, AZ6835, AZ6836 A95-566: AZ6839, AZ6840, AZ6841

SYMPTOM:Service hints

CURE:Service hints - Before the CDM12.3 (4822 691 20843, magnetic clamper version and 4822 691 30335, ball clamper version) should be exchanged, make sure that the flex foil connector on the board is in a good contact with the flex foil cable of CDM12.3. If necessary clean the connections of the flex foil.

SYMPTOM:Codenumber information

CURE:Codenumber information The Battery Door is available with service code number 4822 444 60911.

SYMPTOM:CDM news

CURE:CDM news Production of CDM12.3B (4822 691 30335) will stop at end of 1995. Successor is a low power version CDM12.3BL (4822 691 30359). To substitute CDM12.3BL for CDM12.3B, no other parts change is required. REMARKS : This publication will be followed by Service Information A95-566.

SYMPTOM:Service hints:

CURE:Service hints: In case of servo faults in these sets it is advised to check first the functioning of the capacitors 2911 and 2912, before replacing the IC MPC1715 (item 7900). Please exchange first items 2911 and 2912, both electrolytic capacitors of 47uF (4822 124 80483), to check if this causes the failure. In case these capacitors are of value 4u7, change those into 47uF as stated in newsletter 53.01 and check again the servo functions.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Skips tracks. Disc turns counter-clockwise in service test mode

CURE:Replace capacitors 2911 and 2912 by 4822 124 80483 (47uF). The fault is caused by the capacitors which become defective because of the high ripple current in the feedback loop of the DC/DC-converter. The new capacitors are specified for a higher ripple current. REMARKS : The modification is built-in in sets, produced from production week 9439 onwards. Important note: Whenever sets with an earlier production date are brought in for repair the capacitors should be exchanged as preventive action.

SYMPTOM:NiCd batteries SBC6445 cannot be re-charged in the set.

CURE:Reason for malfunction can either be: Bad contact of accu detection springs (especially spring contact via cabinet part) or over-discharge of NiCd batteries (voltage on battery is lower than 0.9V). In both cases the microcontroller will never switch on charging because the accu_in line from the accu detection circuit remains low, assuming no accus inserted. The solution is : 1. Replace diode D6251 by a SMD jumper (4822 051 20008) 2. Change resistors R3256 (4k7) and R3258 from (5k6) to 22k (4822 051 20223). WARNING Above mentioned modification disables accu detection at two battery positions. As a result also normal batteries can now be charged by the circuit, if they are inserted in those positions. These batteries may become leak and damage the CD-electronics. CUSTOMERS MUST THEREFORE BE INSTRUCTED NOT TO MIX-UP DIFFERENT BATTERY TYPES!! REMARKS : This phenomenon has already been published in newsletter 65. The service solution stated in this edition could not solve all recharging complaints in the field. The new modifications will further improve the detection behaviour. It is possible that completely discharged accus (voltage around 0V) cannot be recharged anymore. For completely discharged accus an external charger can be used. If problems remain, customers should be informed to charge accus even if the set is not in use for a longer period of time. IMPORTANT NOTE: It is advised to modify all sets brought-in for repair.

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Modification

CURE:Modification From week 9616 onwards, 7300 CS4331-KS 'H' version (marked EYH____) has been used in production.Following changes are also implemented in order to improve total harmonic distortion of analogue output. 2311 and 2312 changed from 3,3nF to 1nF (4822 122 33446) 3305 and 3306 changed from 560 ohm to 2,7k ohm (4822 051 20272) 3329 and 3330 changed from 33k ohm to 100k ohm (4822 051 20104) REMARKS : In case the old IC is replaced by IC 4822 209 33969 (marked EYH____) the above mentioned components have to be changed too.

SYMPTOM:Service Manual / System description

CURE:Service Manual / System description - System description, in English language, of the Electronic Shock Absorption (ESA) is printed now. It is an addition to Chapter 6 (Compact Disc) of the Audio Training Kit 1993. In this publication the functioning of shock absorption has been described. Also inserted in this description is the explanation of the CDM12.3 mechanism and the differences between CDM12.3B and CDM12.3BL have been shown. At least the functioning of the applied remote controls in portable sets (SBC6225 and SBC6242) are explained. This description can be ordered with service code number: 4822 725 24941. REMARKS : Portable CD'94 System Description:4822 725 24941.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Correction

CURE:Correction The accessory SBC3546 stated in IFU or service manual is not correct. The car base SBC3546 cannot hold the CD portable models from AZ6830 until AZ6850. To mount these CD portable sets in a car, it is suggested to order car base SBC6560 (4822 466 93339) and car base adaptor SBC6562 (4822 466 93338 for Magnavox or 4822 466 93437 for Philips Modelnumbers).

SYMPTOM:Service manual, explanation terms

CURE:Service manual, explanation terms - Explanation of some terms, published in this manual: Frontpage: * Hillary platform 2 indicates the internal code name for a product family of CD-portables. As such codenames are mentioned in commercial circles it has been decided to add the codename also to the frontpage of the service manual. * ESP stands for Electronic Skip Protection. There is no difference between ESA ( Electronic Shock Absorption) and ESP, except for the name. The abbreviation ESP is usedonly for /17-versions. ESA is explained on page 1-2. Service tools: * By error 3 inch disc is stated in this manual. This disc is not available. With 4822 397 30184 audio signals disc SBC429 will be delivered.

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B (4822 691 30335) is used. This version is succeeded by a low power version CDM12.3BL, (4822 691 30359) which fully substitutes the CDM12.3B, without any adaption to electronic circuitry. Use CDM12.3BL (4822 691 30359) for these sets, offering higher performance (lower power consumption) at lower price. Above substitution IS NOT POSSIBLE for AZ6846, AZ6847, AZ6848, AZ6850. For these sets CDM12.3B remains available (4822 691 30335). Reason:The disc motor drive circuit of these sets consists of a discrete transistor bridge which is supplied by non-regulated power supply of the set. The lower impedance of disc motor of CDM12.3BL (6 ohms, for CDM12.3B this is 11 ohms) and the floating power supply influence the bandwidth and the gain of the disc motor control loop. In case the sets are supplied with an external AC/DC converter the supply voltage rises and the control loop starts to oscillate. In all other sets the disc motor is driven by one H-bridge of the servo driver IC MPC1715 where the influence of the non-regulated power supply is not critical. REMARKS : This publication has been distributed via following service informations: A95-563: AZ6820, AZ6821, AZ6822, AZ6823 A95-564: AZ6825, AZ6827 A95-561: AZ6830, AZ6831, AZ6832, AZ6833 A95-565: AZ6834, AZ6835, AZ6836 A95-566: AZ6839, AZ6840, AZ6841

SYMPTOM:Set skips tracks or mutes in ESA-mode (double speed).

CURE:Full symptom: Set skips tracks or mutes in ESA-mode (double speed), memory is not filled-up properly. In normal play-mode with ESA off (single speed) the set operates without problems. Solution: Bearing of turntable motor is worn out (lifetime problem) Replace CDM12.3BL (4822 691 30359) REMARKS : The phenomenon can hardly be reproduced and even might disappear in vertical playing position. In case of customer complaints the sets should allways be checked in both, ESA and non-ESA-mode.

SYMPTOM:NiCd batteries SBC6445 cannot be re-charged in the set.

CURE:Reason for malfunction can either be: Bad contact of accu detection springs (especially spring contact via cabinet part) or over-discharge of NiCd batteries (voltage on battery is lower than 0.9V). In both cases the microcontroller will never switch on charging because the accu_in line from the accu detection circuit remains low, assuming no accus inserted. The solution is : 1. Replace diode D6251 by a SMD jumper (4822 051 20008) 2. Change resistor R3275 from 470 ohm to 2k2 (4822 051 20222) 3. Change sistors R3256 (4k7) and R3258 from (5k6) to 22k (4822 051 20223). 4. Desolder T7280 and T7282 5. Short-circuit collector/emittor line of T7280 and T7282 by use of SMD jumpers (4822 051 20008) Item 434 Spring-detection Short (4822 71598) and item 436 Spring-Detection Mid (4822 492 71605) are not used. WARNING Above mentioned modification disables accu detection at two battery positions. As a result also normal batteries can now be charged by the circuit, if they are inserted in those positions. These batteries may become leak and damage the CD-electronics. CUSTOMERS MUST THEREFORE BE INSTRUCTED NOT TO MIX-UP DIFFERENT BATTERY TYPES!! REMARKS : This phenomenon has already been published in newsletter 65. The service solution stated in this edition could not solve all recharging complaints in the field. The new modifications will further improve the detection behaviour. It is possible that completely discharged accus (voltage around 0V) cannot be recharged anymore. For completely discharged accus an external charger can be used. If problems remain, customers should be informed to charge accus even if the set is not in use for a longer period of time. IMPORTANT NOTE: It is advised to modify all sets brought-in for repair.

SYMPTOM:Does not start up any disc, does not find a focus point.

CURE:Check soldering points of IC7800.

SYMPTOM:The CD player cannot move the sledge.

CURE:Spring for linear toothes is gone. The CDM replaced.

SYMPTOM:Service Manual / System description

CURE:Service Manual / System description - System description, in English language, of the Electronic Shock Absorption (ESA) is printed now. It is an addition to Chapter 6 (Compact Disc) of the Audio Training Kit 1993. In this publication the functioning of shock absorption has been described. Also inserted in this description is the explanation of the CDM12.3 mechanism and the differences between CDM12.3B and CDM12.3BL have been shown. At least the functioning of the applied remote controls in portable sets (SBC6225 and SBC6242) are explained. This description can be ordered with service code number: 4822 725 24941. REMARKS : Portable CD'94 System Description:4822 725 24941.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B (4822 691 30335) is used. This version is succeeded by a low power version CDM12.3BL, (4822 691 30359) which fully substitutes the CDM12.3B, without any adaption to electronic circuitry. Use CDM12.3BL (4822 691 30359) for these sets, offering higher performance (lower power consumption) at lower price. Above substitution IS NOT POSSIBLE for AZ6846, AZ6847, AZ6848, AZ6850. For these sets CDM12.3B remains available (4822 691 30335). Reason:The disc motor drive circuit of these sets consists of a discrete transistor bridge which is supplied by non-regulated power supply of the set. The lower impedance of disc motor of CDM12.3BL (6 ohms, for CDM12.3B this is 11 ohms) and the floating power supply influence the bandwidth and the gain of the disc motor control loop. In case the sets are supplied with an external AC/DC converter the supply voltage rises and the control loop starts to oscillate. In all other sets the disc motor is driven by one H-bridge of the servo driver IC MPC1715 where the influence of the non-regulated power supply is not critical. REMARKS : This publication has been distributed via following service informations: A95-563: AZ6820, AZ6821, AZ6822, AZ6823 A95-564: AZ6825, AZ6827 A95-561: AZ6830, AZ6831, AZ6832, AZ6833 A95-565: AZ6834, AZ6835, AZ6836 A95-566: AZ6839, AZ6840, AZ6841

SYMPTOM:Correction

CURE:Correction The accessory SBC3546 stated in IFU or service manual is not correct. The car base SBC3546 cannot hold the CD portable models from AZ6830 until AZ6850. To mount these CD portable sets in a car, it is suggested to order car base SBC6560 (4822 466 93339) and car base adaptor SBC6562 (4822 466 93338 for Magnavox or 4822 466 93437 for Philips Modelnumbers).

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Modification

CURE:Modification From week 9616 onwards, 7300 CS4331-KS 'H' version (marked EYH____) has been used in production.Following changes are also implemented in order to improve total harmonic distortion of analogue output. 2311 and 2312 changed from 3,3nF to 1nF (4822 122 33446) 3305 and 3306 changed from 560 ohm to 2,7k ohm (4822 051 20272) 3329 and 3330 changed from 33k ohm to 100k ohm (4822 051 20104) REMARKS : In case the old IC is replaced by IC 4822 209 33969 (marked EYH____) the above mentioned components have to be changed too.

SYMPTOM:Set skips tracks or mutes in ESA-mode (double speed).

CURE:Full symptom: Set skips tracks or mutes in ESA-mode (double speed), memory is not filled-up properly. In normal play-mode with ESA off (single speed) the set operates without problems. Solution: Bearing of turntable motor is worn out (lifetime problem) Replace CDM12.3BL (4822 691 30359) REMARKS : The phenomenon can hardly be reproduced and even might disappear in vertical playing position. In case of customer complaints the sets should allways be checked in both, ESA and non-ESA-mode.

SYMPTOM:Gives error and does not start up disc.

CURE:Check/replace D6951.

SYMPTOM:NiCd batteries SBC6445 cannot be re-charged in the set.

CURE:Reason for malfunction can either be: Bad contact of accu detection springs (especially spring contact via cabinet part) or over-discharge of NiCd batteries (voltage on battery is lower than 0.9V). In both cases the microcontroller will never switch on charging because the accu_in line from the accu detection circuit remains low, assuming no accus inserted. The solution is : 1. Replace diode D6251 by a SMD jumper (4822 051 20008) 2. Change resistors R3256 (4k7) and R3258 from (5k6) to 22k (4822 051 20223). WARNING Above mentioned modification disables accu detection at two battery positions. As a result also normal batteries can now be charged by the circuit, if they are inserted in those positions. These batteries may become leak and damage the CD-electronics. CUSTOMERS MUST THEREFORE BE INSTRUCTED NOT TO MIX-UP DIFFERENT BATTERY TYPES!! REMARKS : This phenomenon has already been published in newsletter 65. The service solution stated in this edition could not solve all recharging complaints in the field. The new modifications will further improve the detection behaviour. It is possible that completely discharged accus (voltage around 0V) cannot be recharged anymore. For completely discharged accus an external charger can be used. If problems remain, customers should be informed to charge accus even if the set is not in use for a longer period of time. IMPORTANT NOTE: It is advised to modify all sets brought-in for repair.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B (4822 691 30335) is used. This version is succeeded by a low power version CDM12.3BL, (4822 691 30359) which fully substitutes the CDM12.3B, without any adaption to electronic circuitry. Use CDM12.3BL (4822 691 30359) for these sets, offering higher performance (lower power consumption) at lower price. Above substitution IS NOT POSSIBLE for AZ6846, AZ6847, AZ6848, AZ6850. For these sets CDM12.3B remains available (4822 691 30335). Reason:The disc motor drive circuit of these sets consists of a discrete transistor bridge which is supplied by non-regulated power supply of the set. The lower impedance of disc motor of CDM12.3BL (6 ohms, for CDM12.3B this is 11 ohms) and the floating power supply influence the bandwidth and the gain of the disc motor control loop. In case the sets are supplied with an external AC/DC converter the supply voltage rises and the control loop starts to oscillate. In all other sets the disc motor is driven by one H-bridge of the servo driver IC MPC1715 where the influence of the non-regulated power supply is not critical. REMARKS : This publication has been distributed via following service informations: A95-563: AZ6820, AZ6821, AZ6822, AZ6823 A95-564: AZ6825, AZ6827 A95-561: AZ6830, AZ6831, AZ6832, AZ6833 A95-565: AZ6834, AZ6835, AZ6836 A95-566: AZ6839, AZ6840, AZ6841

SYMPTOM:Correction

CURE:Correction The accessory SBC3546 stated in IFU or service manual is not correct. The car base SBC3546 cannot hold the CD portable models from AZ6830 until AZ6850. To mount these CD portable sets in a car, it is suggested to order car base SBC6560 (4822 466 93339) and car base adaptor SBC6562 (4822 466 93338 for Magnavox or 4822 466 93437 for Philips Modelnumbers).

SYMPTOM:Service Manual / System description

CURE:Service Manual / System description - System description, in English language, of the Electronic Shock Absorption (ESA) is printed now. It is an addition to Chapter 6 (Compact Disc) of the Audio Training Kit 1993. In this publication the functioning of shock absorption has been described. Also inserted in this description is the explanation of the CDM12.3 mechanism and the differences between CDM12.3B and CDM12.3BL have been shown. At least the functioning of the applied remote controls in portable sets (SBC6225 and SBC6242) are explained. This description can be ordered with service code number: 4822 725 24941. REMARKS : Portable CD'94 System Description:4822 725 24941.

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Modification

CURE:Modification From week 9616 onwards, 7300 CS4331-KS 'H' version (marked EYH____) has been used in production.Following changes are also implemented in order to improve total harmonic distortion of analogue output. 2311 and 2312 changed from 3,3nF to 1nF (4822 122 33446) 3305 and 3306 changed from 560 ohm to 2,7k ohm (4822 051 20272) 3329 and 3330 changed from 33k ohm to 100k ohm (4822 051 20104) REMARKS : In case the old IC is replaced by IC 4822 209 33969 (marked EYH____) the above mentioned components have to be changed too.

SYMPTOM:Set skips tracks or mutes in ESA-mode (double speed).

CURE:Full symptom: Set skips tracks or mutes in ESA-mode (double speed), memory is not filled-up properly. In normal play-mode with ESA off (single speed) the set operates without problems. Solution: Bearing of turntable motor is worn out (lifetime problem) Replace CDM12.3BL (4822 691 30359) REMARKS : The phenomenon can hardly be reproduced and even might disappear in vertical playing position. In case of customer complaints the sets should allways be checked in both, ESA and non-ESA-mode.

SYMPTOM:NiCd batteries SBC6445 cannot be re-charged in the set.

CURE:Reason for malfunction can either be: Bad contact of accu detection springs (especially spring contact via cabinet part) or over-discharge of NiCd batteries (voltage on battery is lower than 0.9V). In both cases the microcontroller will never switch on charging because the accu_in line from the accu detection circuit remains low, assuming no accus inserted. The solution is : 1. Replace D6251 by a SMD jumper (4822 051 20008) 2. Change R3275 from 470 ohm to 2k2 (4822 051 20222) 3. Change R3256 (470 Ohm) and R3258 (560 Ohm) to 2k2 (4822 051 20222 4. Desolder T7280 and T7282 5. Short-circuit collector/emittor line of T7280 and T7282 by use of SMD jumpers (4822 051 20008) WARNING Above mentioned modification disables accu detection at two battery positions. As a result also normal batteries can now be charged by the circuit, if they are inserted in those positions. These batteries may become leak and damage the CD-electronics. CUSTOMERS MUST THEREFORE BE INSTRUCTED NOT TO MIX-UP DIFFERENT BATTERY TYPES!! REMARKS : This phenomenon has already been published in newsletter 65. The service solution stated in this edition could not solve all recharging complaints in the field. The new modifications will further improve the detection behaviour. It is possible that completely discharged accus (voltage around 0V) cannot be recharged anymore. For completely discharged accus an external charger can be used. If problems remain, customers should be informed to charge accus even if the set is not in use for a longer period of time. IMPORTANT NOTE: It is advised to modify all sets brought-in for repair.

SYMPTOM:Correction partslist and list of accessories

CURE:Correction partslist and list of accessories Service codenumber for rechargeable battery SBC6445 was published 4822 138 10073 but this should read 4822 138 10592.

SYMPTOM:Accessories

CURE:Accessories - Next accessories list is valid for these typenumbers /00/01/05/06 SBC1059 SIGNAL LEAD (3.5mm plug -> cinch plugs) 4822 321 21602OOOO SBC1085 SIGNAL LEAD (3.5mm plug at both ends) 4822 321 60546OOOO SBC3304 EARPHONE 4822 015 20619XXXX SBC6225-2 REMOTE CONTROL 4822 218 10571OOOO SBC6242 REMOTE CONTROL (LC-display) 4822 218 10559OOOO PNC310/00 BATTERY CHARGER + 4 x NICAD-R6 4822 218 10551O PNC310/05 BATTERY CHARGER + 4 x NICAD-R6 4822 218 10552O CARRYING BAG SBC6250 4822 600 70781XXXX SBC6608/01 AC/DC ADAPTOR 4822 272 10297 X SBC6608/05 AC/DC ADAPTOR 4822 272 10294X SBC6619/00 AC/DC ADAPTOR 4822 219 82443X SBC6619/06 AC/DC ADAPTOR 4822 272 10309 X SBC3547 Mk2CAR BASE ON SWAN NECK 4822 015 20363OOOO SBC6562 ADAPTOR PLATE 4822 466 93437OOO SBC3557 CAR ADAPTOR SET 4822 015 20423OOOO X...supplied with the set O...optional available

SYMPTOM:Correction

CURE:Correction The accessory SBC3546 stated in IFU or service manual is not correct. The car base SBC3546 cannot hold the CD portable models from AZ6830 until AZ6850. To mount these CD portable sets in a car, it is suggested to order car base SBC6560 (4822 466 93339) and car base adaptor SBC6562 (4822 466 93338 for Magnavox or 4822 466 93437 for Philips Modelnumbers).

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B is used (4822691 30335). This mechanism CAN BE replaced by CDM12.3BL, (4822 691 30359). Add a resistor of 3,3 Ohm 1/3 W (4822 052 10338) in series to the turntable motor.

SYMPTOM:Service Manual correction

CURE:Service Manual correction - In the mechanical partslist the codenumber for the disc drive CDM12.3B is missing. The drive is available under service code 4822 691 30335.

SYMPTOM:Service Manual / System description

CURE:Service Manual / System description - System description, in English language, of the Electronic Shock Absorption (ESA) is printed now. It is an addition to Chapter 6 (Compact Disc) of the Audio Training Kit 1993. In this publication the functioning of shock absorption has been described. Also inserted in this description is the explanation of the CDM12.3 mechanism and the differences between CDM12.3B and CDM12.3BL have been shown. At least the functioning of the applied remote controls in portable sets (SBC6225 and SBC6242) are explained. This description can be ordered with service code number: 4822 725 24941. REMARKS : Portable CD'94 System Description:4822 725 24941.

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Set skips tracks or mutes in ESA-mode (double speed).

CURE:Full symptom: Set skips tracks or mutes in ESA-mode (double speed), memory is not filled-up properly. In normal play-mode with ESA off (single speed) the set operates without problems. Solution: Bearing of turntable motor is worn out (lifetime problem) Replace CDM12.3B (4822 691 30335) REMARKS : The phenomenon can hardly be reproduced and even might disappear in vertical playing position. In case of customer complaints the sets should allways be checked in both, ESA and non-ESA-mode.

SYMPTOM:NiCd batteries SBC6445 cannot be re-charged in the set.

CURE:Reason for malfunction can either be: Bad contact of accu detection springs (especially spring contact via cabinet part) or over-discharge of NiCd batteries (voltage on battery is lower than 0.9V). In both cases the microcontroller will never switch on charging because the accu_in line from the accu detection circuit remains low, assuming no accus inserted. The solution is : 1. Replace D6251 by a SMD jumper (4822 051 20008) 2. Change R3275 from 470 ohm to 2k2 (4822 051 20222) 3. Change R3256 (470 Ohm) and R3258 (560 Ohm) to 2k2 (4822 051 20222 4. Desolder T7280 and T7282 5. Short-circuit collector/emittor line of T7280 and T7282 by use of SMD jumpers (4822 051 20008) Item 433 Spring-Detection Short (4822 492 71598) and item 434 Spring-Detection Mid (4822 492 71605) are not used. WARNING Above mentioned modification disables accu detection at two battery positions. As a result also normal batteries can now be charged by the circuit, if they are inserted in those positions. These batteries may become leak and damage the CD-electronics. CUSTOMERS MUST THEREFORE BE INSTRUCTED NOT TO MIX-UP DIFFERENT BATTERY TYPES!! REMARKS : This phenomenon has already been published in newsletter 65. The service solution stated in this edition could not solve all recharging complaints in the field. The new modifications will further improve the detection behaviour. It is possible that completely discharged accus (voltage around 0V) cannot be recharged anymore. For completely discharged accus an external charger can be used. If problems remain, customers should be informed to charge accus even if the set is not in use for a longer period of time. IMPORTANT NOTE: It is advised to modify all sets brought-in for repair.

SYMPTOM:Service Manual correction

CURE:Service Manual correction - In the mechanical partslist the codenumber for the disc drive CDM12.3B is missing. The drive is available under service code 4822 691 30335.

SYMPTOM:Service Manual / System description

CURE:Service Manual / System description - System description, in English language, of the Electronic Shock Absorption (ESA) is printed now. It is an addition to Chapter 6 (Compact Disc) of the Audio Training Kit 1993. In this publication the functioning of shock absorption has been described. Also inserted in this description is the explanation of the CDM12.3 mechanism and the differences between CDM12.3B and CDM12.3BL have been shown. At least the functioning of the applied remote controls in portable sets (SBC6225 and SBC6242) are explained. This description can be ordered with service code number: 4822 725 24941. REMARKS : Portable CD'94 System Description:4822 725 24941.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Correction

CURE:Correction The accessory SBC3546 stated in IFU or service manual is not correct. The car base SBC3546 cannot hold the CD portable models from AZ6830 until AZ6850. To mount these CD portable sets in a car, it is suggested to order car base SBC6560 (4822 466 93339) and car base adaptor SBC6562 (4822 466 93338 for Magnavox or 4822 466 93437 for Philips Modelnumbers).

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Set skips tracks or mutes in ESA-mode (double speed).

CURE:Full symptom: Set skips tracks or mutes in ESA-mode (double speed), memory is not filled-up properly. In normal play-mode with ESA off (single speed) the set operates without problems. Solution: Bearing of turntable motor is worn out (lifetime problem) Replace CDM12.3B (4822 691 30335) REMARKS : The phenomenon can hardly be reproduced and even might disappear in vertical playing position. In case of customer complaints the sets should allways be checked in both, ESA and non-ESA-mode.

SYMPTOM:Accessories

CURE:Accessories - Next accessories list is valid for these typenumbers /00/01/06 SBC1059 SIGNAL LEAD (3.5mm plug -> cinch plugs) 4822 321 21602OOO SBC1085 SIGNAL LEAD (3.5mm plug at both ends) 4822 321 60546OOO SBC3304S EARPHONE 4822 242 50086X SBC3308S EARPHONE 4822 242 50085 XX SBC6242 REMOTE CONTROL (LC-display) 4822 218 10559XXX SBC6445 NICAD-R6NC-P (2 pc.) 4822 138 10592XXX CARRYING BAG SBC6255 4822 600 70779XXX SBC6608/01 AC/DC ADAPTOR 4822 272 10297 X SBC6619/00 AC/DC ADAPTOR 4822 219 82443X SBC6619/06 AC/DC ADAPTOR 4822 272 10309X SBC3547 Mk2CAR BASE ON SWAN NECK 4822 015 20363OOO SBC6562 ADAPTOR PLATE 4822 466 93437OOO SBC3557 CAR ADAPTOR SET 4822 015 20423OOO X...supplied with the set O...optional available

SYMPTOM:Correction partslist and list of accessories

CURE:Correction partslist and list of accessories Service codenumber for rechargeable battery SBC6445 was published 4822 138 10073 but this should read 4822 138 10592.

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B is used (4822691 30335). This mechanism CAN BE replaced by CDM12.3BL, (4822 691 30359). Add a resistor of 3,3 Ohm 1/3 W (4822 052 10338) in series to the turntable motor.

SYMPTOM:NiCd batteries SBC6445 cannot be re-charged in the set.

CURE:Reason for malfunction can either be: Bad contact of accu detection springs (especially spring contact via cabinet part) or over-discharge of NiCd batteries (voltage on battery is lower than 0.9V). In both cases the microcontroller will never switch on charging because the accu_in line from the accu detection circuit remains low, assuming no accus inserted. The solution is : 1. Replace D6251 by a SMD jumper (4822 051 20008) 2. Change R3275 from 470 ohm to 2k2 (4822 051 20222) 3. Change R3256 (470 Ohm) and R3258 (560 Ohm) to 2k2 (4822 051 20222 4. Desolder T7280 and T7282 5. Short-circuit collector/emittor line of T7280 and T7282 by use of SMD jumpers (4822 051 20008) Item 433 Spring-Detection Short (4822 492 71598) and item 434 Spring-Detection Mid (4822 492 71605) are not used. WARNING Above mentioned modification disables accu detection at two battery positions. As a result also normal batteries can now be charged by the circuit, if they are inserted in those positions. These batteries may become leak and damage the CD-electronics. CUSTOMERS MUST THEREFORE BE INSTRUCTED NOT TO MIX-UP DIFFERENT BATTERY TYPES!! REMARKS : This phenomenon has already been published in newsletter 65. The service solution stated in this edition could not solve all recharging complaints in the field. The new modifications will further improve the detection behaviour. It is possible that completely discharged accus (voltage around 0V) cannot be recharged anymore. For completely discharged accus an external charger can be used. If problems remain, customers should be informed to charge accus even if the set is not in use for a longer period of time. IMPORTANT NOTE: It is advised to modify all sets brought-in for repair.

SYMPTOM:Set skips tracks or mutes in ESA-mode (double speed).

CURE:Full symptom: Set skips tracks or mutes in ESA-mode (double speed), memory is not filled-up properly. In normal play-mode with ESA off (single speed) the set operates without problems. Solution: Bearing of turntable motor is worn out (lifetime problem) Replace CDM12.3B (4822 691 30335) REMARKS : The phenomenon can hardly be reproduced and even might disappear in vertical playing position. In case of customer complaints the sets should allways be checked in both, ESA and non-ESA-mode.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Service Manual / System description

CURE:Service Manual / System description - System description, in English language, of the Electronic Shock Absorption (ESA) is printed now. It is an addition to Chapter 6 (Compact Disc) of the Audio Training Kit 1993. In this publication the functioning of shock absorption has been described. Also inserted in this description is the explanation of the CDM12.3 mechanism and the differences between CDM12.3B and CDM12.3BL have been shown. At least the functioning of the applied remote controls in portable sets (SBC6225 and SBC6242) are explained. This description can be ordered with service code number: 4822 725 24941. REMARKS : Portable CD'94 System Description:4822 725 24941.

SYMPTOM:Accessories

CURE:Accessories - Next accessories list is valid for these typenumbers /00/01/17 SBC1059 SIGNAL LEAD (3.5mm plug -> cinch plugs) 4822 321 21602OOO SBC1085 SIGNAL LEAD (3.5mm plug at both ends) 4822 321 60546OOO SBC3304 EARPHONE 4822 015 20619XX SBC3322/MVX HEADPHONE 4822 242 50076X SBC6225-2 REMOTE CONTROL 4822 218 10571OOO SBC6242 REMOTE CONTROL (LC-display) 4822 218 10559OO SBC6445 NICAD-R6NC-P (2 pc.) 4822 138 10592XXX CARRYING BAG SBC6255 4822 600 70779OO SBC6619/00 AC/DC ADAPTOR 4822 219 82443X SBC6619/01 AC/DC ADAPTOR 4822 272 10308 X SBC6619/17 MVX AC/DC ADAPTOR 4822 272 10305X SBC3547 Mk2CAR BASE ON SWAN NECK 4822 015 20363OO SBC6560 SIMPLE CAR BASE MVX (w/o electronic) 4822 466 93339O SBC6562 ADAPTOR PLATE 4822 466 93437XX SBC6562 ADAPTOR PLATE MVX 4822 466 93338O SBC3557 CAR ADAPTOR SET 4822 015 20423XX DC/DC CONVERTER OF SBC3557 4822 214 52215X CAR ADAPTOR CASS OF SBC3557 4822 268 90516X X...supplied with the set O...optional available

SYMPTOM:Correction

CURE:Correction The accessory SBC3546 stated in IFU or service manual is not correct. The car base SBC3546 cannot hold the CD portable models from AZ6830 until AZ6850. To mount these CD portable sets in a car, it is suggested to order car base SBC6560 (4822 466 93339) and car base adaptor SBC6562 (4822 466 93338 for Magnavox or 4822 466 93437 for Philips Modelnumbers).

SYMPTOM:Spare part information

CURE:Spare part information Capacitor item 2300, 330uF/6.3V (4822 124 80352) is not available. It can be replaced by 220uF/4V (4822 124 42383) without any effect on performance.

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B is used (4822691 30335). This mechanism CAN BE replaced by CDM12.3BL, (4822 691 30359). Add a resistor of 3,3 Ohm 1/3 W (4822 052 10338) in series to the turntable motor.

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Correction partslist and list of accessories

CURE:Correction partslist and list of accessories Service codenumber for rechargeable battery SBC6445 was published 4822 138 10073 but this should read 4822 138 10592.

SYMPTOM:Service Manual correction

CURE:Service Manual correction - In the mechanical partslist the codenumber for the disc drive CDM12.3B is missing. The drive is available under service code 4822 691 30335.

SYMPTOM:Crackling sound at high volume.

CURE:After disconnecting pin 8 and 9 of IC7311 OK. Replace IC7311.

SYMPTOM:Set skips tracks or mutes in ESA-mode (double speed).

CURE:Full symptom: Set skips tracks or mutes in ESA-mode (double speed), memory is not filled-up properly. In normal play-mode with ESA off (single speed) the set operates without problems. Solution: Bearing of turntable motor is worn out (lifetime problem) Replace CDM12.3B (4822 691 30335) REMARKS : The phenomenon can hardly be reproduced and even might disappear in vertical playing position. In case of customer complaints the sets should allways be checked in both, ESA and non-ESA-mode.

SYMPTOM:Spare part information

CURE:Spare part information Capacitor item 2300, 330uF/6.3V (4822 124 80352) is not available. It can be replaced by 220uF/4V (4822 124 42383) without any effect on performance.

SYMPTOM:Spare part information

CURE:Spare part information * * * * *I M P O R T A N T * * * * * * I M P O R T A N T * * * * * In this set CD mechanism CDM12.3B is used (4822691 30335). This mechanism CAN BE replaced by CDM12.3BL, (4822 691 30359). Add a resistor of 3,3 Ohm 1/3 W (4822 052 10338) in series to the turntable motor.

SYMPTOM:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS

CURE:CDM12: OBJECTIVE LENS CLEANING INSTRUCTIONS - WARNING! PRINCIPLE: AVOID CLEANING THE LENS! Cleaning the lens is not completely harmless. Only if the lens is obviously polluted with fingerprints, it can be cleaned with a cleaning solvent. This prescription applies exclusively to plastic lenses. DUST PARTICLES Dust can easily be removed by a blowbrush. FINGERPRINTS, GREASE ETC... Needed: 1. Cleaning solvent: e.g. Kodak lens cleaner CAT 176 7136, which is available in most photoshops. Cleaning solvent B4-No2 can be ordered with service codenumber 4822 389 10024. ALCOHOL MAY NOT BE USED for plastic lenses. Note:Never use cleaning solvents containing isopropanol. For that reason the fluid of the compact disc cleaning set SBC3540 (4822 389 20036) MAY NOT BE USED to clean the lens. 2. Absorbing paper 3. Padstick Action:Take a padstick and immerse it into the cleaning solvent until it is soaked. Then wet the lens surface with the soaked padstick , rotate it slowly without force. The solvent will dissolve fingerprints, grease etc.., rotation will help mechanically. Finally the lens will be filled with the dirty cleaning solvent. Incline the lens (CDM12 mechanism) and suck up the solvent with the edge of the absorbing paper until the fluid has been removed. The remnants of the solvent will evaporate.

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Service Manual / System description

CURE:Service Manual / System description - System description, in English language, of the Electronic Shock Absorption (ESA) is printed now. It is an addition to Chapter 6 (Compact Disc) of the Audio Training Kit 1993. In this publication the functioning of shock absorption has been described. Also inserted in this description is the explanation of the CDM12.3 mechanism and the differences between CDM12.3B and CDM12.3BL have been shown. At least the functioning of the applied remote controls in portable sets (SBC6225 and SBC6242) are explained. This description can be ordered with service code number: 4822 725 24941. REMARKS : Portable CD'94 System Description:4822 725 24941.

SYMPTOM:Service Manual correction

CURE:Service Manual correction - Rechargeable battery pack SBC6445 can be charged in AZ6850. On the circuit diagram of SUPPLY/CONTROL PART (page 10 of service manual), the Explanation of abbreviations should be corrected as : X...Components only for AZ6847/AZ6848/AZ6850

SYMPTOM:Set skips tracks or mutes in ESA-mode (double speed).

CURE:Full symptom: Set skips tracks or mutes in ESA-mode (double speed), memory is not filled-up properly. In normal play-mode with ESA off (single speed) the set operates without problems. Solution: Bearing of turntable motor is worn out (lifetime problem) Replace CDM12.3B (4822 691 30335) REMARKS : The phenomenon can hardly be reproduced and even might disappear in vertical playing position. In case of customer complaints the sets should allways be checked in both, ESA and non-ESA-mode.

SYMPTOM:Set skips tracks or mutes in ESA-mode (double speed).

CURE:Full symptom: Set skips tracks or mutes in ESA-mode (double speed), memory is not filled-up properly. In normal play-mode with ESA off (single speed) the set operates without problems. Solution: Bearing of turntable motor is worn out (lifetime problem) Replace CDM12.3BL (4822 691 30359) REMARKS : The phenomenon can hardly be reproduced and even might disappear in vertical playing position. In case of customer complaints the sets should allways be checked in both, ESA and non-ESA-mode.

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Modification

CURE:Modification From week 9616 onwards, 7300 CS4331-KS 'H' version (marked EYH____) has been used in production.Following changes are also implemented in order to improve total harmonic distortion of analogue output. 2311 and 2312 changed from 3,3nF to 1nF (4822 122 33446) 3305 and 3306 changed from 560 ohm to 2,7k ohm (4822 051 20272) 3329 and 3330 changed from 33k ohm to 100k ohm (4822 051 20104) REMARKS : In case the old IC is replaced by IC 4822 209 33969 (marked EYH____) the above mentioned components have to be changed too.

SYMPTOM:Set skips tracks or mutes in ESA-mode (double speed).

CURE:Full symptom: Set skips tracks or mutes in ESA-mode (double speed), memory is not filled-up properly. In normal play-mode with ESA off (single speed) the set operates without problems. Solution: Bearing of turntable motor is worn out (lifetime problem) Replace CDM12.3BL (4822 691 30359) REMARKS : The phenomenon can hardly be reproduced and even might disappear in vertical playing position. In case of customer complaints the sets should allways be checked in both, ESA and non-ESA-mode.

SYMPTOM:Set skips tracks or mutes in ESA-mode (double speed).

CURE:Full symptom: Set skips tracks or mutes in ESA-mode (double speed), memory is not filled-up properly. In normal play-mode with ESA off (single speed) the set operates without problems. Solution: Bearing of turntable motor is worn out (lifetime problem) Replace CDM12.3B (4822 691 30335) REMARKS : The phenomenon can hardly be reproduced and even might disappear in vertical playing position. In case of customer complaints the sets should allways be checked in both, ESA and non-ESA-mode.

SYMPTOM:Modification

CURE:Modification From week 9616 onwards, 7300 CS4331-KS 'H' version (marked EYH____) has been used in production.Following changes are also implemented in order to improve total harmonic distortion of analogue output. 2311 and 2312 changed from 3,3nF to 1nF (4822 122 33446) 3305 and 3306 changed from 560 ohm to 2,7k ohm (4822 051 20272) 3329 and 3330 changed from 33k ohm to 100k ohm (4822 051 20104) REMARKS : In case the old IC is replaced by IC 4822 209 33969 (marked EYH____) the above mentioned components have to be changed too.

SYMPTOM:Modification

CURE:Modification Above mentioned sets use CD mechanism CDM12.3B (4822 691 30335) or CDM12.3BL (4822 691 30359).The CDM might be exchanged because the guide block (linear toothed bar) is out of position.It has too much play. REMARKS : Guide block has been modified and the new guide block has been introduced from production week 9611 onwards. In the beginning, the CDM with a modified guide block can only be recognized from the week code printed on the label sticked on the CDM.Later on, the colour of the guide block is changed from black into white.Only CDM12.3 marked 9611 and higher should be applied.

SYMPTOM:Correction Service Manual, Electrical partslist:

CURE:Correction Service Manual, Electrical partslist: The service code number of Q421 74HC4052 should read 5322 209 15779.

SYMPTOM:No functions when remote control plug inserted

CURE:Replace remote control socket.

SYMPTOM:Will not play CD unless play button is kept depressed.

CURE:When play button is released, the disk plays backwards. 3.5mm remote jack socket faulty.Replace jack socket - A501.

SYMPTOM:Difficulty in selecting service mode

CURE:Difficulty in selecting service mode Where difficulty is experienced in selecting the service test routine on the above models the following procedure should be adopted. 1. Hold down STORE and PREVIOUS TRACK buttons. 2. Activate the PLAY button momentarily for a very short time (less than ½ second). 3. Keep the STORE and PREVIOUS TRACK buttons held down until a single black line appears on the display indicating that the player is now in service mode. The player should now advance through service positions 0, 1 and 2 to the LCD display tests A and B each time the PLAY button is pressed.

SYMPTOM:Will not play CD unless play button is kept depressed.

CURE:When play button is released, the disk plays backwards. 3.5mm remote jack socket faulty.Replace jack socket - A501.

SYMPTOM:Difficulty in selecting service mode

CURE:Difficulty in selecting service mode Where difficulty is experienced in selecting the service test routine on the above models the following procedure should be adopted. 1. Hold down STORE and PREVIOUS TRACK buttons. 2. Activate the PLAY button momentarily for a very short time (less than ½ second). 3. Keep the STORE and PREVIOUS TRACK buttons held down until a single black line appears on the display indicating that the player is now in service mode. The player should now advance through service positions 0, 1 and 2 to the LCD display tests A and B each time the PLAY button is pressed.

SYMPTOM:Cannot start up with 8 cm disc

CURE:Problem can be solved by changing the following parts : 1. Replace 2920 1uF by 220nF/63V (4822 122 32927). 2. Replace 3921 2k2 by 10k (4822 117 11846).

SYMPTOM:Cannot start up with 8 cm disc

CURE:Problem can be solved by changing the following parts : 1. Replace 2920 1uF by 220nF/63V (4822 122 32927). 2. Replace 3921 2k2 by 10k (4822 117 11846).

SYMPTOM:Cannot start up with 8 cm disc

CURE:Problem can be solved by changing the following parts : 1. Replace 2920 1uF by 220nF/63V (4822 122 32927). 2. Replace 3921 2k2 by 10k (4822 117 11846).

SYMPTOM:Cannot start up with 8 cm disc

CURE:Problem can be solved by changing the following parts : 1. Replace 2920 1uF by 220nF/63V (4822 122 32927). 2. Replace 3921 2k2 by 10k (4822 117 11846).

SYMPTOM:Charging battery does not function

CURE:The player functions well with other NICAD's but they can not be charged. Only the AY3361 can be charged in the player. Codenumber = 4822 138 10615

SYMPTOM:Laser defective

CURE:Before replacement of the CDM12.3, replace C2902 (1uF 6V). If this capacitor in the feedback loop interrupts or becomes resistive, it destroys the laser. The result would be an expensive repair.

SYMPTOM:Set skips tracks/slide motor does not turn in PLAY-mode.

CURE:Full symptom: Set skips tracks/slide motor does not turn in PLAY-mode. The phenomenon mainly occurs at low temperatures (< -10°C). Reason: Conceptual failure of the set. In PLAY-mode the gain of the slide servo control loop is too low. The gain depends on a software parameter of the CD7 (set by the microprocessor), the gain of the servo driver, temperature behaviour of slide motor and friction of gear. In worst case (low gain of servo driver/ low impedance of slide motor) the set can already be inoperative at ambient temperature !! During production only selected servo driver / CD-drive combinations are in use. In addition the low pass filter of the slide motor control loop has been redesigned. As long term solution the software will be changed. Microprocessors with software versions v70 - replace defective part - solder resistor 12R in parallel to slide motor (simulates low temperature) - enter PLAY-mode and check slide movement (watch tooth wheel of slide motor) - if slide does not move or still skips tracks modify low pass filter (if not already carried out) pos. 3817470R(4822 051 20471) pos. 38180R(4822 051 20008) pos. 281747nF(4822 122 32542) pos. 281847nF(4822 122 32542) - repeat PLAY-test - if set is still inoperative upgrade microprocessor (see table below) - desolder resistor 12R TYPENUMBERFACT. CHANGE UPGRADE MICROPROCESSOR TO CODE AZ7263, AZ7264KT01 onwards TMP47C823F-AZ7264.2 or TMP47P823VF(OTP) software version: v70 service code: 4822 209 13566 1) AZ7260, AZ7261, KT01 onlyTMP47C823F-AZ7264.2 or TMP47P823VF(OTP) AZ7262, AZ7265, (printed software version: v70 AZ7266, AZ7267,board 1)service code: 4822 209 13566 1) AZ7268 2) AZ7260, AZ7261, KT02 onwards TMP47C422F-AZ7262.2 AZ7262, AZ7265, (printed software version: v70 AZ7266, AZ7267,board 2)service code: 4822 209 15023 AZ7268 2) AZ7360, AZ7361, KT01 onwards TMP87CK20AF-AZ7466.3 AZ7362, AZ7363,software version: v69 AZ7364, AZ7365,service code: 4822 209 13133 AZ7366, AZ7367 AZ7461, AZ7464, KT01 onwards TMP87CK20AF-AZ7466.3 AZ7465, AZ7466,software version: v69 AZ7467 service code: 4822 209 13133 1) Service stock of old processors has been cleared, only new version will be delivered. 2) These typenumbers are produced with two different versions of the printed board.