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PHILIPS AZ68xx serial CD players service bulletins

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Post time 2023-08-22 10:19:16 | Show all posts |Read mode
MODEL: AZ6800
SYMPTOM: Service hint
CURE: Service hint In case of oscillating of the focus a new disc-hold-down 4822 532 52334 can be placed.
MODEL: AZ6801
SYMPTOM: Service hint
CURE: Service hint In case of oscillating of the focus a new disc-hold-down 4822 532 52334 can be placed.
MODEL: AZ6808
SYMPTOM: Electrical partslist
CURE: Electrical partslist The uP TMP47C820AF-N817 (item 7900) is available under service codenumber 4822 209 31281.
MODEL: AZ6813
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.
MODEL: AZ6813
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.
MODEL: AZ6814
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.
MODEL: AZ6814
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.
MODEL: AZ6815
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.
MODEL: AZ6815
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.
MODEL: AZ6815
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.
MODEL: AZ6815
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)
MODEL: AZ6815
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.
MODEL: AZ6819
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.
MODEL: AZ6819
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.
MODEL: AZ6820
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.
MODEL: AZ6820
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.
MODEL: AZ6820
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.
MODEL: AZ6820
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.
MODEL: AZ6820
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.
MODEL: AZ6820
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.
MODEL: AZ6820
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
MODEL: AZ6821
SYMPTOM: Totally inoperative.
CURE: Check IC7900 (4822 209 32241) and/or T7951 (4822 130 42615)
MODEL: AZ6821
SYMPTOM: Bad sound quality or no sound from the CD player.
CURE: Check the mass contact of the headphone socket.
MODEL: AZ6821
SYMPTOM: Crackling sound from Line Out.
CURE: Check the Line Output socket 1342.
MODEL: AZ6821
SYMPTOM: CD produces crackling sound because of bad track following.
CURE: Check IC7850 (TDA1301T/N1; 4822 209 31064).
MODEL: AZ6821
SYMPTOM: CD skips tracks and stops after a few minutes.
CURE: Check the CDM (4822 691 20834).
MODEL: AZ6821
SYMPTOM: Does not accept any disc.
CURE: The focus coil does not move. Replace CDM (4822 691 20834).
MODEL: AZ6821
SYMPTOM: Player is totally inoperative.
CURE: The voltage converter IC is defect, this causes a defective uP
MODEL: AZ6821
SYMPTOM: Sometimes strange characters on display.
CURE: Check processor IC7400 (4822 209 32239).
MODEL: AZ6821
SYMPTOM: Gives NO DISC indication. Does not find focus.
CURE: Check CDM (4822 691 20834).
MODEL: AZ6821
SYMPTOM: Does not read in CD. Sledge gets stuck sometimes.
CURE: Check whether the flatcable in RCD is mounted correctly.
MODEL: AZ6821
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.
MODEL: AZ6821
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.
MODEL: AZ6821
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.
MODEL: AZ6821
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.
MODEL: AZ6821
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
MODEL: AZ6821
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.
MODEL: AZ6821
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.
MODEL: AZ6822
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
MODEL: AZ6822
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.
MODEL: AZ6822
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.
MODEL: AZ6822
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.
MODEL: AZ6822
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.
MODEL: AZ6822
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.
MODEL: AZ6822
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.
MODEL: AZ6823
SYMPTOM: Set inoperative on battery supply.
CURE: Check whether the battery springs are bent. Replace the springs (4822 492 71333).
MODEL: AZ6823
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.
MODEL: AZ6823
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).
MODEL: AZ6823
SYMPTOM: Inoperative on NiCd accu supply. On battery supply set OK.
CURE: Check ext. DC socket pos.1250 (4822 267 31354).
MODEL: AZ6823
SYMPTOM: The CD sledge does not move.
CURE: Check the toothed braket of the CDM. Replace CDM (4822 691 20834).
MODEL: AZ6823
SYMPTOM: Strange echo sound from headphone.
CURE: Check mass connection of headphone socket CN1341 (4822 267 31638).
MODEL: AZ6823
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
MODEL: AZ6823
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.
MODEL: AZ6823
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.
MODEL: AZ6823
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.
MODEL: AZ6823
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.
MODEL: AZ6823
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.
MODEL: AZ6823
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.
MODEL: AZ6823
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.
MODEL: AZ6823
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.
MODEL: AZ6823
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.
MODEL: AZ6823
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.
MODEL: AZ6823
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.
MODEL: AZ6825
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.
MODEL: AZ6825
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.
MODEL: AZ6825
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.
MODEL: AZ6825
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
MODEL: AZ6825
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.
MODEL: AZ6825
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.
MODEL: AZ6825
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.
MODEL: AZ6826
SYMPTOM: Bad sound CD-out and phone-out.
CURE: Check sockets.
MODEL: AZ6826
SYMPTOM: No sound from the CD player.
CURE: Check soldering pins of IC7805.
MODEL: AZ6826
SYMPTOM: CD does not read the TOC. The CD does not turn.
CURE: Check RCD (4822 691 30295).
MODEL: AZ6826
SYMPTOM: Does not accept any CD. Gives ERROR.
CURE: Check RCD. (4822 691 30295).
MODEL: AZ6826
SYMPTOM: CD skips tracks at higher tracks.
CURE: Check RCD. (4822 691 30295).
MODEL: AZ6826
SYMPTOM: Inoperative. No focus finding, no rotation.
CURE: Blue wire from modification PCB might be loose.
MODEL: AZ6826
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
MODEL: AZ6827
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.
MODEL: AZ6827
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.
MODEL: AZ6827
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.
MODEL: AZ6827
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.
MODEL: AZ6827
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
MODEL: AZ6827
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
MODEL: AZ6827
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.
MODEL: AZ6827
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.
MODEL: AZ6830
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).
MODEL: AZ6830
SYMPTOM: Does not start.
CURE: Laser supply. Check the bias pin 15 (MPC1715). Replace capacitor 2905 (1 uF). 4822 126 11692
MODEL: AZ6830
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.
MODEL: AZ6830
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.
MODEL: AZ6830
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.
MODEL: AZ6830
SYMPTOM: Codenumber information
CURE: Codenumber information The Battery Door is available with service code number 4822 444 60911.
MODEL: AZ6830
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.
MODEL: AZ6830
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
MODEL: AZ6831
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
MODEL: AZ6831
SYMPTOM: Codenumber information
CURE: Codenumber information The Battery Door is available with service code number 4822 444 60911.
MODEL: AZ6831
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.
MODEL: AZ6831
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.
MODEL: AZ6831
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.
MODEL: AZ6832
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
MODEL: AZ6832
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.
MODEL: AZ6832
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.
MODEL: AZ6832
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.
MODEL: AZ6832
SYMPTOM: Codenumber information
CURE: Codenumber information The Battery Door is available with service code number 4822 444 60911.
MODEL: AZ6833
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.
MODEL: AZ6833
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.
MODEL: AZ6833
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
MODEL: AZ6833
SYMPTOM: Codenumber information
CURE: Codenumber information The Battery Door is available with service code number 4822 444 60911.
MODEL: AZ6833
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.
MODEL: AZ6834
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).
MODEL: AZ6834
SYMPTOM: The CD player is sometimes not able to read the TOC.
CURE: Check soldering points of IC7850.
MODEL: AZ6834
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.
MODEL: AZ6834
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.
MODEL: AZ6834
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.
MODEL: AZ6834
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.
MODEL: AZ6834
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
MODEL: AZ6834
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).
MODEL: AZ6835
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.
MODEL: AZ6835
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).
MODEL: AZ6835
SYMPTOM: The CD player can not read the TOC.
CURE: The axle is loose at the turntablemotor side.
MODEL: AZ6835
SYMPTOM: The CD player does not produce any sound.
CURE: Check/replace DAC IC7835 (TDA1545AT/N2; 4822 209 33164).
MODEL: AZ6835
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.
MODEL: AZ6835
SYMPTOM: Play knob stucks and does not release after pushing in.
CURE: Clean dirt between play knob pos.411 and front panel.
MODEL: AZ6835
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.
MODEL: AZ6835
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.
MODEL: AZ6835
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.
MODEL: AZ6835
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.
MODEL: AZ6835
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
MODEL: AZ6835
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).
MODEL: AZ6836
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.
MODEL: AZ6836
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).
MODEL: AZ6836
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.
MODEL: AZ6836
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.
MODEL: AZ6836
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
MODEL: AZ6836
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.
MODEL: AZ6836
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.
MODEL: AZ6836
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).
MODEL: AZ6837
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).
MODEL: AZ6837
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.
MODEL: AZ6837
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.
MODEL: AZ6837
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).
MODEL: AZ6839
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.
MODEL: AZ6839
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.
MODEL: AZ6839
SYMPTOM: Codenumber information
CURE: Codenumber information The Battery Door is available with service code number 4822 444 60911.
MODEL: AZ6839
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.
MODEL: AZ6839
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.
MODEL: AZ6839
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
MODEL: AZ6839
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.
MODEL: AZ6839
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.
MODEL: AZ6840
SYMPTOM: CD player gives error and CD turns the wrong way around.
CURE: Replace C2911 and C2912.
MODEL: AZ6840
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).
MODEL: AZ6840
SYMPTOM: Does not start.
CURE: Laser supply. Check the bias pin 15 (MPC1715). Replace capacitor 2905 (1 uF). 4822 126 11692
MODEL: AZ6840
SYMPTOM: Voices are far in the background, only music in the foreground.
CURE: Coil L5340 defective
MODEL: AZ6840
SYMPTOM: CD does not start up, no laser light.
CURE: Check/replace IC7900, T7904 and T7905.
MODEL: AZ6840
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
MODEL: AZ6840
SYMPTOM: Codenumber information
CURE: Codenumber information The Battery Door is available with service code number 4822 444 60911.
MODEL: AZ6840
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.
MODEL: AZ6840
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.
MODEL: AZ6840
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.
MODEL: AZ6840
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.
MODEL: AZ6840
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.
MODEL: AZ6840
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.
MODEL: AZ6840
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.
MODEL: AZ6840
SYMPTOM: CD player very shock sensitive.
CURE: Check if pos 411 (mounting ring of pressure plate) is mounted well
MODEL: 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
MODEL: 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.
MODEL: AZ6841
SYMPTOM: Codenumber information
CURE: Codenumber information The Battery Door is available with service code number 4822 444 60911.
MODEL: 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 A95-566.
MODEL: AZ6841
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.
MODEL: 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.
MODEL: 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.
MODEL: AZ6841
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.
MODEL: AZ6843
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.
MODEL: AZ6843
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.
MODEL: AZ6843
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.
MODEL: AZ6843
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.
MODEL: AZ6843
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.
MODEL: AZ6843
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).
MODEL: AZ6843
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.
MODEL: AZ6843
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
MODEL: AZ6843
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.
MODEL: AZ6844
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.
MODEL: AZ6844
SYMPTOM: Does not start up any disc, does not find a focus point.
CURE: Check soldering points of IC7800.
MODEL: AZ6844
SYMPTOM: The CD player cannot move the sledge.
CURE: Spring for linear toothes is gone. The CDM replaced.
MODEL: AZ6844
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.
MODEL: AZ6844
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.
MODEL: AZ6844
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
MODEL: AZ6844
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).
MODEL: AZ6844
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.
MODEL: AZ6844
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.
MODEL: AZ6844
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.
MODEL: AZ6845
SYMPTOM: Gives error and does not start up disc.
CURE: Check/replace D6951.
MODEL: AZ6845
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.
MODEL: AZ6845
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.
MODEL: AZ6845
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
MODEL: AZ6845
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).
MODEL: AZ6845
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.
MODEL: AZ6845
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.
MODEL: AZ6845
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.
MODEL: AZ6845
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.
MODEL: AZ6846
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.
MODEL: AZ6846
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.
MODEL: AZ6846
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
MODEL: AZ6846
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).
MODEL: AZ6846
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.
MODEL: AZ6846
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.
MODEL: AZ6846
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.
MODEL: AZ6846
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.
MODEL: AZ6846
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.
MODEL: AZ6846
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.
MODEL: AZ6847
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.
MODEL: AZ6847
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.
MODEL: AZ6847
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.
MODEL: AZ6847
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.
MODEL: AZ6847
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).
MODEL: AZ6847
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.
MODEL: AZ6847
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.
MODEL: AZ6847
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
MODEL: AZ6847
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.
MODEL: AZ6847
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.
MODEL: AZ6848
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.
MODEL: AZ6848
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.
MODEL: AZ6848
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.
MODEL: AZ6848
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.
MODEL: AZ6848
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
MODEL: AZ6848
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).
MODEL: AZ6848
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.
MODEL: AZ6848
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.
MODEL: AZ6848
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.
MODEL: AZ6848
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.
MODEL: AZ6848
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.
MODEL: AZ6850
SYMPTOM: Crackling sound at high volume.
CURE: After disconnecting pin 8 and 9 of IC7311 OK. Replace IC7311.
MODEL: 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.
MODEL: AZ6850
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.
MODEL: AZ6850
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.
MODEL: AZ6850
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.
MODEL: AZ6850
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.
MODEL: AZ6850
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.
MODEL: AZ6850
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
MODEL: AZ6856
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.
MODEL: AZ6856
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.
MODEL: AZ6856
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.
MODEL: AZ6856
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.
MODEL: AZ6858
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.
MODEL: AZ6858
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.
MODEL: AZ6858
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.
MODEL: AZ6858
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.
MODEL: AZ6880
SYMPTOM: Correction Service Manual, Electrical partslist:
CURE: Correction Service Manual, Electrical partslist: The service code number of Q421 74HC4052 should read 5322 209 15779.
MODEL: AZ6892
SYMPTOM: No functions when remote control plug inserted
CURE: Replace remote control socket.
MODEL: AZ6892
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.
MODEL: AZ6892
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.
MODEL: AZ6897
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.
MODEL: AZ6897
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.



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