Philips-MCM-204-B-Service-Manual电路原理图.pdf

MCM204/all version©Copyright 2007 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll 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.Published by SL 0830 Service Audio Printed in The Netherlands Subject to modificationMicro SystemVersion 1.6CLASS 1LASER PRODUCT© 3141 785 31326TABLE OF CONTENTSPageLocation of PCBs .1-2Specifi cations .1-3Measurement Setup .1-4Service Aids, Safety Instruction, etc .1-5CD Playability Check .1-6 to 1-7Software Version Checking . 2Set Block Diagram . 3Set Wiring Diagram . 4Main & Power Board. 5Front/MCU Board . 6CD MP3 Board . 7Set Mechanical Exploded View & Parts List . 8Revision List . 9MCM204B/61CD MP3 BoardCD DriveMain BoardFront / MCU BoardPower BoardLOCATION OF PCBs1-2VERSION VARIATIONSType /Versions:Board in used:MCM204 & MCM204BService policyMAIN BOARDCD MP3 BOARDPOWER BOARD* TIPS : C - Component Lever Repair.M - Module Lever Repair- UsedC/M/05 /12 96/61FRONT/MCU BOARDCCxM/77C/MCCMC/MCCMC/MCCMC/MCCM1-3AMPLIFIEROutput power . 2 x 4W RMSSignal-to-noise ratio. t 60 dBA (IEC)Frequency response . 125 16000 HzImpedance loudspeakers . 4:CD PLAYERFrequency range . 125 16000 HzSignal-to-noise ratio. 65 dBATUNERFM wave range . 87.5 108 MHzMW wave range . 531 1602 kHzSensitivity at 75 : FM 26 dB sensitivity . 20 µV MW 26 dB sensitivity . 5 mV/mTotal harmonic distortion. d 5%TAPE DECKFrequency responseNormal tape (type I).125 8000 Hz (8 dB)Signal-to-noise ratioNormal tape (type I). 40 dBAWow and flutter . d 0.4% JISSPEAKERSBass reflex systemDimensions (w x h x d) . 146 x 228 x 160 (mm)GENERAL INFORMATIONAC Power . 220 230 V / 50 HzDimensions (w x h x d) . 146 x 228 x 216(mm)Weight (with/without speakers) . approx. 4.4 / 2.0 kgPower consumptionActive . 30 WStandby . < 5 WEco Power Standby . < 1 WSpecifications and external appearance aresubject to change without notice.SPECIFICATIONSLF Generator e.g. PM5110RecorderUse Universal Test Cassette CrO2 SBC419 4822 397 30069LEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BLRDUTor Universal Test Cassette Fe SBC420 4822 397 30071LEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BLRDUTCDUse Audio Signal Disc(replaces test disc 3)SBC429 4822 397 30184Bandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTS/N and distortion metere.g. Sound Technology ST1700BFrame aeriale.g. 7122 707 89001Tuner AM (MW,LW)To avoid atmospheric interference all AM-measurements have to be carried out in a Faraday´s cage.Use a bandpass filter (or at least a high pass filter with 250Hz) to eliminate hum (50Hz, 100Hz).RF Generator e.g. PM5326Ri=50Bandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTRF Generator e.g. PM5326S/N and distortion metere.g. Sound Technology ST1700BUse a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).Ri=50Tuner FMMEASUREMENT SETUP1-41-5Service Tools:Universal Torx driver holder .4822 395 91019Torx bit T10 150mm .4822 395 50456Torx driver set T6-T20 .4822 395 50145Torx driver T10 extended .4822 395 50423Compact Disc:SBC426/426A Test disc 5 + 5A .4822 397 30096SBC442 Audio Burn-in test disc 1kHz .4822 397 30155SBC429 Audio Signals disc .4822 397 30184Dolby Pro-logic Test Disc .4822 395 10216SERVICE AIDSGB WARNINGAll ICs and many other semi-conductors aresusceptible to electrostatic discharges (ESD).Careless handling during repair can reduce lifedrastically.When repairing, make sure that you areconnected with the same potential as the massof the set via a wrist wrap with resistance.Keep components and tools also at thispotential.ESDCLASS 1LASER PRODUCTGBSafety regulations require that the set be restored to its originalcondition and that parts which are identical with those specified,be usedSafety components are marked by the symbol !.Lead freeSet remains closed!Standard repair procedureNYPlay a CD for at least 10 minutesYplayabilityok ?Nplayabilityok ?add Info for customer“SET OK“playabilityok ?YNcheck playabilityNYplayabilityok ?check playabilitycheck playabilityEYE-Patternok ?NYcheck “EYE-Pattern“replace CD DriveLaser currentok ?NYcheck Laser currentCD Drive offsetsok ?NYcheck CD Drive offsetsclean the lenscheck playabilityreturn setCustomer complaint“CD related problem“return setreturn setreplace CD Drivereturn setreplace CD Drivereturn setreplace Signal Processorreturn set“fast“ lens cleaning1234567For flap loaders (= access to CD drive possible) cleaning method 4 is recommended1 - 7 For description - see following pagesINSTRUCTIONS ON CD PLAYABILITY1-61PLAYABILITY CHECKFor sets which are compatible with CD-RW discsuse CD-RW Printed Audio Disc.7104 099 96611TR 3 (Fingerprint)TR 8 (600µ Black dot) maximum at 01:00 playback of these two tracks without audible disturbanceplaying time for: Fingerprint 10secondsBlack dot from 00:50 to 01:10 jump forward/backward (search) within a reasonable timeFor all other sets use CD-DA SBC 444A.4822 397 30245TR 14 (600µ Black dot) maximum at 01:15TR 19 (Fingerprint)TR 10 (1000µ wedge) playback of all these tracks without audible disturbanceplaying time for: 1000µ wedge 10secondsFingerprint 10secondsBlack dot from 01:05 to 01:25 jump forward/backward (search) within a reasonable time2CUSTOMER INFORMATIONIt is proposed to add an addendum sheet to the set whichinforms the customer that the set has been checkedcarefully - but no fault was found.The problem was obviously caused by a scratched, dirty orcopy-protected CD. In case problems remain, the customeris requested to contact the workshop directly. The lens cleaning (method 3) should be mentioned in theaddendum sheet.The final wording in national language as well as the printingis under responsibility of the Regional Service Organizations.3FAST LENS CLEANING (dry brush)Use lens cleaning CDSBC AC300.9082 100 00043Insert the lens cleaning CD, press PLAY and follow thevoice guide´s instructions on the CD.4LIQUID LENS CLEANINGBecause the material of the lens is synthetic and coatedwith a special anti-reflectivity layer, cleaning must be donewith a non-aggressive cleaning fluid. It is advised to use“Cleaning Solvent B4-No2”, available with codenumber4822 389 10026.The actuator is a very precise mechanical component andmay not be damaged in order to guarantee its full function.Clean the lens gently (dont press too hard) with a soft andclean cotton bud moistened with the special lens cleaner.The direction of cleaning must be in the way as indicated inthe picture below.Before touching the lens it is advised to clean thesurface of the lens by blowing clean air over it.This to avoid that little particles make scratches onthe lens.INSTRUCTIONS ON CD PLAYABILITY1-72-1 2-1To hold DSC & SKIPNEXT depressed while set on standbyDisplay shows theROM version “VER y.yy MTP xx-xx-2007“V refers to Versiony.yy refers to Software version number of the uProcessor(counting up from 01 to 99)xx refers to date number of the production.SOFTWARE VERSION CHECKING3-1 3-1SET BLOCK DIAGRAMSET WIRING DIAGRAM4-1 4-1