Philips-MCM-204-B-Service-Manual电路原理图.pdf
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1、 MCM204/all versionCopyright 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 p
2、rior 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 P
3、layability 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 PC
4、Bs1-2VERSION 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
5、. 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 V MW 26 dB sensitivity . 5 mV/mTotal harmonic dis
6、tortion. 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) . 1
7、46 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 48
8、22 397 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(rep
9、laces 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 Faradays cage.U
10、se 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
11、 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
12、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
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