Philips-MCD-355-Service-Manual电路原理图.pdf
MCD355/98©Copyright 2009 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 permission of Philips.Published by SL 0920 Service Audio Printed in The Netherlands Subject to modifi cationDVD Micro TheaterVersion 1.0CLASS 1LASER PRODUCT© 3141 785 34150TABLE OF CONTENTSPagePCBs Location .1-2Specifi cations .1-3Measurement Setup .1-4Service Aids, Safety Instruction, etc .1-5 to 1-7Software Version Checking . 2Set Block Diagram . 3Set Wiring Diagram . 4Main & Headphone & AUX Board. 5VFD Board & Touch Key Board . 6Servo Board. 7USB & Power Key Board . 8Set Mechanical Exploded View & Parts List . 91-2PCBS LOCATION1-3DiscLaser Type SemiconductorDisc Diameter 12cm/8cmVideo Decoding MPEG-1 / MPEG-2 / DivXVideo DAC 12BitsSignal System PAL / NTSCVideo Format 4:3 / 16:9Video S/N > 48dBAudio DAC 24Bits / 96kHzTotal Harmonic Distortion65dBAGeneral informationAC power 110 - 127V/220 - 240V, 50/60HzDimensions- Main Unit (W x H x D)- Speaker Box (W x H x D)173 x 257 x 240mm173 x 257 x 240mmWeight- With Packing- Main Unit- Speaker Box10.8 kg2.3 kg2 x 2.8 kgAmplifi erRated Output Power 4X50W RMSFrequency Response 63 - 14000 Hz, ±3dBSignal to Noise Ratio > 62dBTuner (FM)Tuning Range 87.5 - 108 MHzTuning grid 50 KHzSensitivity- Mono, 26dB S/N Ratio45 dBSpeakersSpeaker Impedance 6ohmUSB playability informationCompatible USB devices:USB fl ash memory (USB 2.0 or USB1.1)USB fl ash players (USB 2.0 or USB1.1)memory cards (requires an additional card reader to work with this apparatus) Supported formats: USB or memory fi le format FAT12, FAT16, FAT32 (sector size: 512 bytes)MP3 bit rate (data rate): 32-320 Kbps and variable bit rateWMA v9 or earlierDirectory nesting up to a maximum of 8 levelsNumber of albums/ folders: maximum 99Number of tracks/titles: maximum 999ID3 tag v2.0 or laterFile name in Unicode UTF8 (maximum length: 128 bytes) Unsupported formats: Empty albums: an empty album is an album that does not contain MP3/WMA fi les, and is not be shown in the display.Unsupported fi le formats are skipped. For example, Word documents (.doc) or MP3 fi les with extension .dlf are ignored and not played.AAC, WAV, PCM audio fi lesDRM protected WMA fi les (.wav, .m4a, .m4p, .mp4, .aac)WMA fi les in Lossless formatSupported disc formatsDigital Video Discs (DVDs)Video CDs (VCDs)Super Video CDs (SVCDs)Digital Video Discs + Rewritable (DVD+RW)Compact Discs (CDs)Picture (Kodak, JPEG) fi les on CDR(W)DivX® disc on CD-R(W):DivX 3.11, 4.x and 5.x, 6WMASupported MP3-CD formats:ISO 9660Max. title/album name: 12 charactersMax. title number plus album: 255.Max. nested directory: 8 levels.Max. album number: 32.Max. MP3 track number: 999.Supported sampling frequencies for MP3 disc: 32 kHz, 44.1 kHz, 48 kHz.Supported Bit-rates of MP3 disc are: 32, 64, 96, 128, 192, 256 (kbps).The following formats are not supported:Files like *.VMA, *.AAC, *.DLF, *.M3U,*.PLS, *.WAVNon-English Album/Title nameDiscs recorded in Joliet formatMP3 Pro and MP3 with ID3 tagSPECIFICATIONS1-4LEVEL METER e.g. Sennheiser UPM550 with FF-filte r S/N and distortion meter e.g. Sound Technology ST1700B L R DUT CDUse Audio Signal Disc (replaces test disc 3) SBC429 4822 397 30184 Bandpass 250Hz-15kHz e.g. 7122 707 48001 LF Voltmeter e.g. PM2534 DUT S/N and distortion meter e.g. Sound Technology ST1700B Frame aerial e.g. 7122 707 89001 Tuner 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 250Hz) to eliminate hum (50Hz, 100Hz). RF Generator e.g. PM5326 Ri=50 Bandpass 250Hz-15kHz e.g. 7122 707 48001 LF Voltmeter e.g. PM2534 DUT RF Generator e.g. PM5326 S/N and distortion meter e.g. Sound Technology ST1700B Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).Ri=50 Tuner FMMEASUREMENT SETUP 1-5SERVICE 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 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 components are marked by the symbol!.Lead freeSet remains closed!NYPlay a CD for at least 10 minutesYplayabilityok ?Nplayabilityok ?add Info for customer“SET OK“check playabilityNYplayabilityok ?check playabilitycheck playabilityreturn setCustomer complaint“CD related problem“fast“ lens cleaning123For flap loaders (= access to CD drive possible)cleaning method 4 is recommendedINSTRUCTIONS ON CD PLAYABILITY1 - 6Exchange CDM1 - 4 For description - see following pages1PLAYABILITY CHECKFor sets which are compatible with CD-RW discsuse CD-RW Printed Audio Disc.7104 099 96611TR 3 (Fingerprint)TR 8 (600µ 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 (600µ Black dot) maximum at 01:15TR 19 (Fingerprint)TR 10 (1000µ wedge) playback of all these tracks without audible disturbanceplaying time for: 1000µ 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 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 mentioned in theaddendum sheet.The final wording in national language as well as the printingis under responsibility of the Regional Service Organizations.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 The actuator is 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 touching 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 - 73-1 3-1SET BLOCK DIAGRAMSET WIRING DIAGRAM4-1 4-1MAIN & HP JACK & AUX JACK BOARDTABLE OF CONTENTSMain PCB - Layout Top View . 5-2Main PCB - Circuit Diagram .5-3 to 5-10Headphone Jack PCB . 5-11AUX Jack PCB . 5-125-1 5-1
