Philips-CDR770-cd-sm 维修电路原理图.pdf

Published by JvO 0063 Service BG AudioPrinted in the netherlandsSubject to modification? 3104 125 40110Copyright reserved 2000 Philips Consumer Electronics B.V. Eindhoven, The Netherlands. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips.Compact disc recorder2nd line Service ManualCDR570CDR770CDR775CDR930CDR950ContentsPage1Introduction22Safety- and maintenance instructions, warnings and notes33Directions for use64Mechanical instructions7Loader CDL40097CDL38008Demounting CDL38009Exploded view CDM380011Cleaning lens12Lubricating135Service modes, faultfindingtrees and repair tips14Service modes14Faultfindingtrees186Blockdiagrams337Electrical diagrams and PWBs348Alignments, Adjustments759Circuit description76List of abbreviations7710 Sparepart list85RadioFans.CN 收音机爱 好者资料库Technical Specifications/Introduction.GB 2CDR 3rd gen.1.1.Technical Specifications/Introduction.In this document the important issues for the mechanical and electrical testing, adjusting, checking and diagnosing of the Digital Audio CDR Module such as applied in so-called 3rd generation CDR recorders is described. In this first chapter is presented the introduction of the repair manual for 2nd line repair workshops. In contains the repair instructions of the CDR Module CDL4009 + Mainboard 4228. All modules consist of the same loader + CDM part, the mounting of the components on the Mainboard deviates form each other. For that reason a separate CDR-module has been defined for each type/modelnumber. On top of that: Each mainboard connected to another CDM has to adjusted before that module can be used. To have this module on component level repaired this second line service (repair) manual has to used in combination with the first line service manual of mentioned typenumber. As long as the adjustment instructions can not be carried out, the module has to be exchanged by an adjusted one from Service stock in case of repairs concerning CDM and/or Servo circuits. Chapter 2 contains the required safety instructions, in chapter 3 a referring to the directions for use, as published in the typenumber Service Manual, is made.In chapter 4 the mechanical exploded view of the complete module, the loading part and the CDM3800 is presented. This chapter also includes the mounting, demounting, cleaning and greasing instruction.In chapter 5 the internal selfdiagnostics without opening the set and use of other tools is described in the service modes. Thefaultfinding trees and repair suggestions like the power supply voltages for proper functioning of the mainboard are indicated there too. This chapter also contains initialising and reset, concerned measuring points are highlighted. For proper functioning of all ICs the clockfrequencies have to be tested and the importance of derived clockfrequencies is shown. and and how to operate with the menu driven diagnostics. Via a PC connection (serial input socket RS232C) the Menu Driven Diagnostics feature is started.To improve the interactivity and communication with the set/module the COMPAIR (the for service designed computer aided repair) tool is supported too by this CDR generation. Details to be defined soonest and will be published by a service information bulletin later on.Via blockdiagrams of applied boards the common issues of all boards are shown and in short explained in chapter 6.In chapter 7 the circuit diagrams and printed wiring boards with important measuring points are shown. The adjustment of the laser current (only one important and necessary adjustment has to be carried out, the rest of the adjustments are calcultated from that parameter onwards) will be presented in chapter 8. The needed PC program is under investigation now and with the implentation of COMPAIR this adjustment action will be explained. The method how to align the software, if needed, is indicated here.In chapter 9 reference is made to existing 3rd generation circuit description in which publication a lot of details about the functioning of the set is explained.Also the list of abbreviations is inserted here. Finally a survey of applied components and corresponding service ordering numbers is given in chapter 10. As the Mainboard 4228 is designed to be applied for several modelnumbers this board contains a lot of optional components.The most extended board is modelnumber CDR775 where double speed dubbing feature is applied too.RadioFans.CN 收音机爱 好者资料库Safety and Maintenance instructions warnings and notesGB 3CDR 3rd gen.2.2.Safety and Maintenance instructions warnings and notesSHOCK, FIRE HAZARD SERVICE TEST:CAUTION: After servicing this appliance and prior to returning to customer, measure the resistance betweeneither primary AC cord connector pins (with unit NOT connected to AC mains and its Power switch ON), and theface or Front Panel of product and controls and chassis bottom,Any resistance measurement less than 1 Megohms should cause unit to be repaired or corrected before ACpower is applied, and verified before return to user/customer.Ref.UL Standard NO.1492.NOTE ON SAFETY:Symbol : Fire or electrical shock hazard. Only original parts should be used to replace any part with symbol Any other component substitution(other than original type), may increase risk or fire or electrical shock hazard.FATTENTIONTous les IC et beaucoup dautres semi-conducteurs sont sensibles aux dchargesstatiques (ESD).Leur longvit pourrait tre considrablementcourte par le fait quaucune prcautionnest prise a leur manipulation.Lors de rparations, sassurer de bien trereli au mme potentiel que la masse delappareil et enfiler le bracelet serti dunersistance de scurit.Veiller a ce que les composants ainsi que lesoutils que lon utilise soient galement a cepotentiel.DWARNUNGAlle IC und viele andere Halbleiter sindempfindlich gegen elektrostatischeEntladungen (ESD).Unsorgfltige Behandlung bei der Reparaturkann die Lebensdauer drastisch vermindern.Sorgen sie dafr, das Sie im Reparaturfallber ein Pulsarmband mit Widerstand mitdem Massepotential des Gertes verbundensind.Halten Sie Bauteile und Hilfsmittel ebenfallsauf diesem Potential.NLWAARSCHUWINGAlle ICs en vele andere halfgeleiders zijngevoelig voor elektrostatische ontladingen(ESD).Onzorgvuldig behandelen tijdens reparatiekan de levensduur drastisch doenverminderen.Zorg ervoor dat u tijdens reparatie via eenpolsband met weerstand verbonden bent methetzelfde potentiaal als de massa van hetapparaat.Houd componenten en hulpmiddelen ook opditzelfde potentiaal.IAVVERTIMENTOTutti IC e parecchi semi-conduttori sonosensibili alle scariche statiche (ESD).La loro longevita potrebbe essere fortementeridatta in caso di non osservazione della piugrande cauzione alla loro manipolazione.Durante le riparazioni occorre quindi esserecollegato allo stesso potenziale che quellodella massa dellapparecchio tramite unbraccialetto a resistenza.Assicurarsi che i componenti e anche gliutensili con quali si lavora siano anche aquesto potenziale.All ICs and many other semi-conductors aresusceptible to electrostatic discharges (ESD).Careless handling during repair can reducelife drastically.When repairing, make sure that you areconnected with the same potential as themass of the set via a wrist wrap withresistance.Keep components and tools also at thispotential.GBWARNINGGBSafety regulations require that the set be restored to its original conditionand that parts which are identical with those specified be used.NLVeiligheidsbepalingen vereisen, dat het apparaat in zijn oorspronkelijketoestand wordt terug gebracht en dat onderdelen, identiek aan degespecifieerde worden toegepast.DBei jeder Reparatur sind die geltenden Sicherheitsvorschriften zu beachten.Der Originalzustand des Gerats darf nicht verandert werden.Fur Reparaturen sind Original-Ersatzteile zu verwenden.ILe norme di sicurezza esigono che lapparecchio venga rimesso nellecondizioni originali e che siano utilizzati pezzi di ricambiago idetici a quellispecificati.FLes normes de scurit exigent que lappareil soit remis a ltat dorigine etque soient utilises les pices de rechange identiques celles spcifies.“Pour votre scurit, ces documentsdoivent tre utiliss par desspcialistes agres, seuls habilits rparer votre appareil en panne.”CL 96532086_021.eps080999Safety and Maintenance instructions warnings and notesGB 4CDR 3rd gen.2.SERVICING HINTSIn the set, chip components have been applied. For disassembly and assembly check the figure below.CL 96532086_022.eps080999Safety and Maintenance instructions warnings and notesGB 5CDR 3rd gen.2.CL 96532086_023.eps080999Instructions for useGB 6CDR 3rd gen.3.3.Instructions for use See service manual of concerned modelnumber in which the instructions for use has been inserted. This chapter has not been filled as this module of CDR Module CDL4009 + Mainboard 4228 is only a part of a complete set.Mechanical instructionsGB 7CDR 3rd gen.4.4.Mechanical instructions4.1Loader CDL4009CDL4009 consists of metal loader bracket item 82 and glued on it an identification sticker (on which the module production number and production code is printed); 4 suspension rubbers items 76, 77, 78 and 79 which carry loader assembly item 81; and on the bottom side the CDR mainboard 1001 is mounted. Notice that mainboard is dependant to the applied set and has to be adjusted to mounted CDM in loader in case of exchange.See next figure, Loader CDL4009Figure 4-1 To demount loader module CDL4009:1.Mainboard item 1001. Beware of connections to CDM. Optical pick-up unit has to be ESD protected!2.Loosen suspensions 76, 77, 78 and 79 from metal loader bracket 813.Take out Loader assy CDLMAIN BOARD CDRM3 X 6LOADER ASSY CDLSUSPENSIONLOADER BRACKET8276777879811001979899 10082: LOADER BRACKET3104 121 2390081: LOADER ASSY CDL9305 043 2090076: SUSPENSION3104 144 05730CL06532018_001.eps090300Mechanical instructionsGB 8CDR 3rd gen.4.4.2Exploded view CDL3800Figure 4-2 014822 691 10764CHASSIS024822 361 11131TRAY MOTOR ASSY034822 492 11709MOTOR SPRING044822 277 11838SWITCH104822 532 13097TULE134822 492 11709MOTOR SPRING144822 528 11295PULLEY WHEEL174822 358 10266BELT181822 522 10739RACK GEAR WHEEL194822 522 10741TRAY GEAR WHEEL204822 402 11221RACK214822 418 10421TRAY BLACK324822 492 11711RACK SPRING334822 535 10588PLUG344822 535 10588PLUG374822 466 12131RUBBER384822 466 12131RUBBER394822 466 12131RUBBER404822 466 12131RUBBER414822 466 12132CLAMPER BRIDGE42 4822 466 12133CLAMPERCL06532018_002.eps100300Mechanical instructionsGB 9CDR 3rd gen.4.Figure 4-3 4.3DEMOUNTING LOADER CDL3800Remove the following items starting with: (For the item numbers refer to the Exploded Views CDL3800, figure 4.2)4.3.1Release and remove trayPush to open the tray on the rack (item 20)Figure 4-4 Figure 4-5 TrayPull out the tray (item 21) until it stucks. Press the lock at the left side of the tray upwards. Pull out the tray.Figure 4-6 Tray motor asseyRemove the tray motor belt (item 17).Loosen the motorspring (item 3) with a pair of tweezers or a screwdriver via the rectangular hole at the right side of the tray motor.Clamper bridgeBend the locks-profiles on both sides of the clamper bridge (item 41) carefully to the outside and lift up the clamper bridge.CDMPlace the loader upside down and remove the motorspring (item 13) with a pair of tweezers or a screwdriver, but hold the CDM so it cant fall down.RackFirst remove the rack spring (item 32) by unscrewing items 11 and 12.CL06532018_003.eps090300CL06532018_004.eps210200CL06532018_005.eps210200PULL TO REMOVE TRAYCL06532018_006.eps210200Mechanical instructionsGB 10CDR 3rd gen.4.ClamperFigure 4-7 CL06532018_007.eps210200Mechanical instructionsGB 11CDR 3rd gen.4.4.4Exploded view CDM3800Figure 4-8 CDM 3800CL06532018_012.eps0203001.31.41.51.6Mechanical instructionsGB 12CDR 3rd gen.4. 3104 147 01580 CDM3800 COMPLETE1: 4822 691 10765 MOUNTING PLATE ASSY1.3: 4822 361 11132 SLEDGE MOTOR ASSY2: 3104 147 12890 OPU-24.243: 4822 535 10591 THIRD BEARING AXLE4: 4822 535 10591 AXLE12: 4822 528 11297 COMBI WHEEL13: 4822 522 10742 GEAR RACK ASSY22: 3104 141 21830 THIRD BEARING SPRING2100: 4822 126 13196 100nF 10% 25V3100: 4822 051 20101 100 5% 0,1W5101: 4822 130 11531 SENSOR LT125A4.5Cleaning objective lens4.5.1CLEANING PRESCRIPTION OBJECTIVE LENSCleaning fluid The lens cleaner codenumber reads 4822 389 10026ProcedureTake a clean cotton wool tipped stick and put Lens-cleaner on the wool.Wipe the lens very softly with the wet wool end of the stick by moving it forwards and backwards in the Y-direction. (see drawing)Take a dry cotton wool tipped stick and remove the Lens-cleaner from the lens by moving it very softly back and forth in the Y-direction (see drawing) During cleaning, take the necessary precautions in order to prevent damage to the*Actuator (hinges, lens, litze-wires) or OPU (ESD, .) Do not remove axle (item 4, see drawing) from OPU, because the fixing screws of axle are deforming it at its end. On their turn these deformings are damaging the hinges of the OPU when loosening the axle.Application This cleaning procedure is only applicable for the flat side (upside) of the lens. Never try to clean the round side (underside) of the lens (replica-side).With this cleaning procedure, fingerprints and dust can easily be removed with verysoft and gently movements of the cotton wool tipped stick.LimitationThis cleaning procedure is only applicable in cases of malfunctions of the product,due to lens-problems. Its not ment to be applied on 100% of the actuators, OPUs.After cleaning, the product must be re-checked on its functionality.Figure 4-9 YCL06532018_008.eps2102004Mechanical instructionsGB 13CDR 3rd gen.4.4.6Lubricating4.6.1LUBRICATING INSTRUCTIONS FOR GENERIC LOADING CDL3800USE TRIBOL GREASE (1322 523 78101)Be careful when lubricating the parts.For parts and points to apply grease, refer to the drawing figure 4-10.Avoid excess grease. B. The bearing of the gearwheel. Grease on upper part of cylindrical surface.oC. Guiding and 2 guiding pins of the rack on the chassis.oD. The guiding of the rackspring.*E. The 2 guiding.profiles of the rack*F. 10 guiding surface of the chassis on the tray.*G. The guiding pin on the rack.*H. On top (in the middle) of the 4 rubbers.*I. Guiding on the chassis of the tray. Grease around the 5 guiding pins.*J. The guiding ribs of the chassis for guiding the CDM-nose.*o=Lubricated with dosing apparatus.*=Lubricated with a brush.Figure 4-10 4.6.2Lubricating instructions for CDM3800USE TRIBOL GREASE (1322 523 78101)The third bearing axle (item 3, 4822 535 10591) on the upperside of the axle 2xThe third bearing axle on the bottomside of the axle 2xThe OPU bearing with Mobil Oil SHC 629 (see next paragraph)The top of the wormThe pressed in axle on the topThe gear rack assy (item 13, 4822 522 10742) on the teeth2xBetween worm and combiwheel (item 12, 4822 528 11297)2xFigure 4-11 Oiling the