Philips-MCM-704-D-Service-Manual电路原理图.pdf
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Philips-MCM-704-D-Service-Manual电路原理图.pdf
Version 1.1MCM704D© 3141 785 31780DVD Micro theatreall versions Published by LX 0719 Service Audio Subject to modification© Copyright 2007 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved. No part of this publication may be reproduced, stored 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 tools .2-1Service measurement setup .2-2Connections and controls .3-1.3-3Software version check and upgrading .4-1Block diagram .5-1Wiring diagram .6-1VFD Board circuit diagram .7-1 layout diagram .7-2Tuner Boardcircuit diagram .8-1 layout diagram .8-2AMP Boardcircuit diagram .9-1.9-2 layout diagram .9-3CPU Board circuit diagram. .10-1layout diagram .10-2.10-3Exploded view diagram .11-1Service partslist .12-1Commercial partslistTABLE OF CONTENTS1 - 11 - 22 - 1TECHNICAL SPECIFICATIONS2 - 2SERVICE MEASUREMENTBandpass250Hz-15kHze.g. 7122 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=50½Bandpass250Hz-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 250kHz) to eliminate hum (50Hz, 100Hz).RF Generator e.g. PM5326Ri=50½LRLEVEL 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 and distortion metere.g. Sound Technology ST1700BDUTLF Generator e.g. PM5110Ri=50½3 - 1CONNECTION AND CONTROLS3 - 2CONNECTION AND CONTROLS3 - 3CONNECTION AND CONTROLS4 - 1 4 - 1SOFTWARE VERSION CHECK AND UPGRADINGSET BLOCK DIAGRAM5 - 1 5 - 1
