Philips-MCD-135-Service-Manual电路原理图.pdf

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1、Version 1.0MCD1353141 785 3567050W Classic DVD Micro System-/78/51/58/55Published by SW 1046 Service Audio Subject to modification Copyright 2010 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved. No part of this publication may be reproduced, stored in a retrievalsyste

2、m or transmitted, in any form or by any means, electronic, mechanical, photocopying,or otherwise without the prior permission of Philips.CONTENTSTechnical specification and version variation .1-2Service measurement setup.1-3Service aids .1-4Instructions on CD playability .2-1. 2-2Block diagram .3-1W

3、iring diagram .4-1Disassembly diagram.4-2.4-3 Main board and Tuner boardCircuit diagra.5-1.5-6 Layout diagram .5-7Display and Key boardCircuit diagram .6-1.6-2 Layout diagram .6-3.6-4SMPS Power boardCircuit diagram .7-1 Layout diagram .7-2.7-3Exploded view diagram .8-1TECHNICAL SPECIFICATION1 - 2Amp

4、lifierRated Output Power2 X 25 W RMSFrequency Response40 Hz - 20000 Hz, 3 dBSignal to Noise Ratio 65 dBAux Input 500 mV RMS 600 ohmDiscLaser Type SemiconductorDisc Diameter 12 cm/8 cmVideo Decoding MPEG-1 / MPEG-2 / DivXVideo DAC 12 BitsSignal System PAL / NTSCVideo Format 4:3 / 16:9Video S/N 48 dBA

5、udio DAC 24 Bits / 96 kHzTotal Harmonic Distortion65 dBAVideo resolution 720 X 480 X 30; 720 X 576 X 25Tuner (FM)Tuning Range 87.5 - 108MHzTuning grid 50KHzSensitivity - Mono, 26dB S/N Ratio28dBfTotal Harmonic Distortion55dBSpeakersSpeaker Impedance 6 ohmSpeaker Driver Full range speakerSensitivity

6、80 dB/m/W4dB/m/WGeneral informationAC power 110 - 240 V, 50/60 HzOperation Power Consumption25 WEco Standby Power Consumption 1 WComposite Video Output1.0 Vp-p, 75 ohmHeadphone output 2 X 15 mW, 32 ohmUSB Direct Version 2.0Dimensions- Main Unit (W x H x D) - Speaker Box (W x H x D)152 X 170 X 210 mm

7、 152 X 170 X 200 mm Weight- With Packing- Net weight 6.79 kg3.16 kgType /Versions:FeaturesBoard in used:MCD135Service policyDISPLAY BOARD AND KEY BOARD MAIN BOARD AND TUNER BOARD* TIPS : C - Component Lever Repair.M - Module Lever Repair - UsedFeature diffrenceRDS & DABVOLTAGE SELECTORECO STANDBY -

8、DARKType /Versions:VERSION VARIATION/58SMPS POWER BOARDDCM105/51 /78DVD MECH BOARDM/CCCC/55/58 /51 /78/551-3LF Generator e.g. PM5110RecorderUse Universal Test Cassette CrO2 SBC419 4822 397 30069LEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metee.g. Sound Technology ST170LRDUTor U

9、niversal 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 Voltmetere.g. PM2534DUTS/N and distortion

10、 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 (50Hz, 100Hz).RF Generator e.g. PM5326R

11、i=50:Bandpass250Hz-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=50:Tuner FMMEASUREMENT SETUP1-4SERVICE AIDSGB WA

12、RNINGAll 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 t

13、ools 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 minutesY

14、playabilityok ?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 PLA

15、YABILITY2 - 1Exchange 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 (600 Black dot) maximum at 01:00 playback of these two tracks without audible disturbanceplaying time

16、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 01:15TR 19 (Fingerprint)TR 10 (1000 wedge) playback of all these tracks without audible disturbanceplayi

17、ng 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 to the set whichinforms the customer that the set has been checkedcarefully - but no fault was found

18、.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 unde

19、r 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

20、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 len

21、s 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 PLAYABILITY2 - 2SET BLOCK DIAGRAM3 - 1 3 - 1SET WIRING DIAGRAM4 - 1 4- 15 - 15 - 1CIRCUIT DIAGRAM - MAIN BOARDMCU PART5 - 2 5 - 2CIRCUIT DIAGRAM - MAIN BOARDAUDIO AND POWER PART