Philips-FWM-377-Service-Manual电路原理图.pdf

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1、CLASS 1LASER PRODUCTCopyright 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

2、prior permission of Philips.Published by SL0750 Service Audio Printed in The Netherlands Subject to modifi cation.GB3141 785 31631 Mini SystemTABLE OF CONTENTSPageSpecifi cations .1-1Specification .1-3Service Aids, Safety Instruction, etc .1-5 to 1-7Block Diagram . 2Wiring Diagram . 3Front Board dou

3、ble port bass reflexImpedance . 6 :Woofer . 1 x 13cmTweeter. 1 x 5cmDimensions (w x h x d) .27.3 x 31 x 20.4 (cm)Weight . 3.65 kg eachGENERALMaterial/finish . Polystyrene/MetalAC Power . 220 230 V / 50 HzPower ConsumptionActive . 120 WStandby .d 15 WEco Power standby . d 1 WDimensions (w x h x d) .2

4、6.5 x 31 x 38.4 (cm)Weight (without speakers) . 9.1 kgSpecifications and external appearance aresubject to change without notice.SPECIFICATION1-4LF Generator e.g. PM5110RecorderUse Universal Test Cassette CrO2 SBC419 4822 397 30069LEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion met

5、ee.g. Sound Technology ST170LRDUTor 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 Volt

6、metere.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.Use a bandpass filter (or at least a high pass filter with 250Hz) to eliminate hum (5

7、0Hz, 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 FMME

8、ASUREMENT SETUP1-5Service 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 30155SBC4

9、29 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

10、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 compon

11、ents 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-Patter

12、n“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 cle

13、aning1234567For 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 (

14、600 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 (600 Black dot) maximum at 01:

15、15TR 19 (Fingerprint)TR 10 (1000 wedge) playback of all these tracks without audible disturbanceplaying time for: 1000 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

16、 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

17、 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 guides in

18、structions 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

19、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 t

20、ouching 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 2-1SET BLOCK DIAGRAMSET WIRING DIAGRAM3-1 3-1FRONT & USB BOARDTABLE OF CONTENTSFront PCB - Layout Top View . 6-2Front PCB - Layout Bottom View . 6-3Front & USB PCB - Circuit Diagram . 6-4USB PCB - Layout . 6-54-1 4-1