Philips-MCM-190-Service-Manual电路原理图.pdf

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1、Version 1.0MCM190, MCM195 3141 785 30200Micro Systemall versions Published by YT 0522 Service Audio Printed in The Netherlands Subject to modification Copyright 2005 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved. No part of this publication may be reproduced, stored

2、 in a retrievalsystem or transmitted, in any form or by any means, electronic, mechanical, photocopying,or otherwise without the prior permission of Philips.Handling chip components . 1-1Leadfree and safety information . 1-2Technical specification . 2-1Service test program . 2-1Service measurement s

3、etup . 2-2Connections and controls . 3-1.3-2Disassembly diagram . 4-1.4-2Set block diagram . 5-1Set wiring diagram . 5-2Display and key boardcircuit diagram . 6-1layout diagram . 6-2Main and AC power boardcircuit diagram. . 7-1.7-2layout diagram (component side) . 7-3layout diagram (copper side) . 7

4、-4Cassette boardcircuit diagram . 8-1layout diagram . 8-2tape deck adjustment . 8-2Exploded view (main set) . 9-1Mechanical partslist . 9-2Electrical partslist . 10-1.10-2TABLE OF CONTENTS1 - 1HANDLING CHIP COMPONENTS1 - 22 - 1SERVICE TEST PROGRAM2 - 2SERVICE MEASUREMENTBandpass250Hz-15kHze.g. 7122

5、707 48001LF Voltmetere.g. PM2534DUTRF Generator e.g. PM5326S/N and distortion metere.g. Sound Technology ST1700BTuner FWUse a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).Ri=50Bandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTS/N and

6、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.Use a bandpass filter (or at least a high pass filter with 250kHz) to eliminate hum (50Hz, 100Hz).RF Generator e

7、.g. PM5326Ri=50LRLEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BDUTCD RECORDERUse Audio Signal Disc SBC429 4822 397 30184(replaces test disc 3)Use Universal Test Cassette Fe SBC420 4822 397 30071LRLEVEL METERe.g. Sennheiser UPM550with FF-filterS/N

8、 and distortion metere.g. Sound Technology ST1700BDUTLF Generator e.g. PM5110Ri=503 - 1CONNECTION AND CONTROLS3 - 2CONNECTION AND CONTROLSFor more information onoperation instruction please visit Philips Audio internet site : http:/xx4 - 1A1STEP A : Remove Back Cabinet- A1 : Remove 2 screws (SP3x12)

9、- A2 : Remove 4 screws (SP3x10)- A3 : Remove 2 screws (K3x10)- A4 : Remove 2 screws (K3x10)STEP B : Remove CD Tray and Mains board- B1: Remove 4 screws (SP3x12)A3A2A2A4B1B1DISASSEMBLY DIADRAMSxx4 - 2DISASSEMBLY DIADRAMSSTEP C : Remove Main PCB Assy - Remove 3 screws (SP3x8)STEP D : Remove LCD PCB from Front Cabinet- E1 : Remove 10 screws (SP2.6x8)STEP E : Remove Tape Deck- H : Remove 4 screws (SP3x8)C1E1E1xx5 - 1SET BLOCK DIADRAM