Philips-MCB-204-Service-Manual电路原理图.pdf
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1、 MCB204/05Copyright 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 perm
2、ission of Philips.Published by SL 0716 Service Audio Printed in The Netherlands Subject to modificationMicro SystemVersion 1.0CLASS 1LASER PRODUCT 3141 785 31760TABLE OF CONTENTSPageSpecifi cations .1-2Measurement Setup .1-3Service Aids, Safety Instruction, etc .1-4 to 1-6Service Test Program . 2Set
3、 Block Diagram . 3Set Wiring Diagram . 4Main Board . 5Front Board. 6MCU Board . 7Power Board . 8Set Mechanical Exploded View fr Reparaturen sind Original-Ersatzteile zu verwenden.Sicherheitsbauteile sind durch das Symbol !markiert.ILe norme di sicurezza esigono che lapparecchio venga rimessonelle co
4、ndizioni originali e che siano utilizzati i pezzi di ricambioidentici a quelli specificati.Componenty di sicurezza sono marcati con !GBAfter servicing and before returning set to customer perform a leakagecurrent measurement test from all exposed metal parts to earth ground toassure no shock hazard
5、exist. The leakage current must not exceed0.5mA.1 - 6INFORMATION ABOUT LEAD-FREE SOLDERINGPhilips CE is producing lead-free sets from 1.1.2005 onwards.IDENTIFICATION:Regardless of special logo (not always indicated) one must treat all sets from 1 Jan 2005 onwards, according next rules:Example S/N:Bo
6、ttom line of typeplate gives a 14-digit S/N. Digit 5&6 is the year, digit 7&8 is the week number,so in this case 2005 wk12So from 0501 onwards = from 1 Jan 2005 onwardsImportant note: In fact also products of year 2004 must be treated in this way as long asyou avoid mixing solder-alloys (leaded/ lea
7、d-free). So best to always use SAC305 and thehigher temperatures belong to this.Due to lead-free technology some rules have to be respected by the workshop during a repair: Use only lead-free solder alloy Philips SAC305 with order code 0622 149 00106. If lead-free solder-paste is required, please co
8、ntactthe manufacturer of your solder-equipment. In general use of solder-paste within workshops should be avoided because paste is noteasy to store and to handle. Use only adequate solder tools applicable for lead-free solder alloy. The solder tool must be ableo To reach at least a solder-temperatur
9、e of 40o To stabilize the adjusted temperature at the solder-tipo To exchange solder-tips for different applications. Adjust your solder tool so that a temperature around is reached and stabilized at the solder joint. Heating-time of thesolder-joint should not exceed 4 sec. Avoid temperatures above
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