Philips-MCM-355-Service-Manual电路原理图.pdf

《Philips-MCM-355-Service-Manual电路原理图.pdf》由会员分享，可在线阅读，更多相关《Philips-MCM-355-Service-Manual电路原理图.pdf（31页珍藏版）》请在收音机爱好者资料库上搜索。

1、 MCM355/12Copyright 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 perm

2、ission of Philips.Published by SL 0915 Service Audio Printed in The Netherlands Subject to modificationMicro SystemVersion 1.0CLASS 1LASER PRODUCT 3141 785 33930TABLE OF CONTENTSPageLocation of PCBs .1-2Specifi cations .1-3Measurement Setup .1-4Service Aids, Safety Instruction, etc .1-5CD Playabilit

3、y Check .1-6 to 1-7Software Version Checking . 2Set Wiring & Block Diagram . 3Audio AMP Board . 4MCU & USB & Headphone Boards . 5Touch Panel & VFD & Power Key Boards . 6Set Mechanical Exploded View & Parts List . 7Revision List . 81-2VERSION VARIATIONSType /Versions:Board in used:MCM205Service polic

4、yMAIN BOARDMCU BOARDUSB JACK BOARD* TIPS : C - Component Lever Repair.M - Module Lever Repair- UsedC/12 /05 /5589/16/85/DISPLAY & KEY BOARDCCTUNER BOARD MxHEADPHONE BOARD C/37C/MDISPLAY & KEY BOARDHEADPHONE BOARDMCU BOARDTUNER BOARDUSB BOARDMAIN BOARDPCBS LOCATIONSpecificationsAmplifierRated Output

5、Power 4X50W RMSFrequency Response 63 - 14000 Hz, 3dBSignal to Noise Ratio 62dBDiscLaser Type SemiconductorDisc Diameter 12cm/8cmSupport Disc CD-DA, CD-R, CD-RW, MP3-CD, WMA-CDAudio DAC 24Bits / 44.1kHzTotal Harmonic Distortion 65dBATuner (FM)Tuning Range 87.5 - 108 MHzTuning grid 50 KHzSensitivity-

6、Mono, 26dB S/N Ratio 45 dBSpeakersSpeaker Impedance 6ohmGeneral informationAC power 220 - 230V, 50HzOperation Power Consumption 42WStandby Power Consumption 20WEco Standby Power Consumption 0.8WDimensions- Main Unit (W x H x D)- Speaker Box (W x H x D)173 x 257 x 240mm173 x 257 x 240mmWeight- With P

7、acking- Main Unit- Speaker Box10.8 kg2.3 kg2 x 2.8 kgUSB playability informationCompatible USB devices:USB fl ash memory (USB 2.0 or USB1.1)USB flash players (USB 2.0 or USB1.1)memory cards (requires an additional card reader to work with this MCM355)Supported formats:USB or memory fi le format FAT1

8、2, 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: 12

9、8 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 file formats are skipped. For example, Word documents (.doc) or MP3 ?files with extension .dlf are ignored and not played.AAC, WAV, PCM audio ? fi

10、lesDRM protected WMA ? files (.wav, .m4a, .m4p, .mp4, .aac)WMA fi les in Lossless formatSupported MP3 disc formatsISO9660, JolietMaximum title number: 512 (depending on file name length)Maximum album number: 255Supported sampling frequencies: 32 kHz, 44.1kHz, 48 kHzSupported Bit-rates: 32256 (kbps),

11、 variable bit rates1-31-4LEVEL 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 Voltmetere.g. PM2534DUTS/N and distortion metere.g. Sound Tech

12、nology 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 (50Hz, 100Hz).RF Generator e.g. PM5326Ri=50Bandpass250Hz-15k

13、Hze.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 FMMEASUREMENT SETUP1-5SERVICE AIDSGB WARNINGAll ICs and many o

14、ther semi-conductors aresusceptible to electrostatic discharges (ESD).Careless handling during repair can reduce lifedrastically.When repairing, make sure thatyouareconnected with the same potential as the massof the set viaawrist wrap with resistance.Keep components and tools also at thispotential.

15、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 ?Nplayability

16、ok ?add Info for customer“SET OK“check playabilityNYplayabilityok ?check playabilitycheck playabilityreturn setCustomer complaint“CD related problem“fast“ lens cleaningFor flap loaders (= access to CD drive possible)cleaning method is recommendedINSTRUCTIONS ON CD PLAYABILITY1 - 6Exchange CDM- For d

17、escription - see following pagesPLAYABILITY CHECKFor sets which are compatible with CD-RW discsuse CD-RW Printed Audio Disc.7104 099 96611TR 3 (Fingerprint)TR 8 (600 Black dot) maximum at 01:00 playback of these two tracks without audible disturbanceplaying time for: Fingerprint 10secondsBlack dot f

18、rom 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 01:15TR 19 (Fingerprint)TR 10 (1000 wedge) playback of all these tracks without audible disturbanceplaying time for: 1000 wedge 10secondsFing

19、erprint 10secondsBlack dot from 01:05 to 01:25 jump forward/backward (search) within a reasonable timeCUSTOMER 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

20、 scratched, dirty orcopy-protected CD. In case problems remain, the customeris requested to contact the workshop directly. The lens cleaning (method ) should be mentioned in theaddendum sheet.The final wording in national language as well as the printingis under responsibility of the Regional Servic

21、e Organizations.LIQUID 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 damag

22、ed 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 t

23、he lens by blowing clean air over it.This to avoid that little particles make scratches onthe lens.INSTRUCTIONS ON CD PLAYABILITY1 - 7How to read software version, 1. Standby mode, press and hold PLAY button for 5 seconds,LCD Display shows existing MCU software version, eg. “V300313”. SERVICE TEST PROGRAM2-12-12. No USB status, press and hold POWER and SOURCE buttons for 3 seconds,LCD Display shows existing USB software version, eg. “V0022”. 3-1 3-1SET BLOCK DIAGRAM3-2 3-2SET WIRING DIAGRAM