Philips-MCD-716-Service-Manual电路原理图.pdf

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1、Version 1. 1MCD716ServiceManualDVD Micro System Published by DB 0946 Service Audio Printed in The Netherlands Subject to modificationCopyright 2006 Philips Consumer Electronics B.V. Eindhoven, The Netherlands All rights reserved. No part of this publication may be reproduced, stored in a r etrievals

2、ystem or transmitted, in any form or by any means, electronic, mechanical, pho tocopying,or otherwise without the prior permission of Philips. CLASS 1 LASER PRODUCT 3141 785 32301Location of PCBS . 1-1Specifications . 1-2Measurement Setup . 1-3Service Aids, Safety Instruction, etc. . 1-4Instructions

3、 On CD Playability . 1-5 to 1-6Software Version Check & Upgrade . 2-1Malfuction Check Chart . 2-2Disassembly Diagram . 3-1Block Diagram . 4-1Wiring Diagram. 4-2Display Board . 5Tuner Board . 6Remote Receive And Volume Board . 7Aux And USB Board . 8Headphone And Lamp Board . 9Scart And Amp front lamp

4、 Board . 10Power Board . 11Decode Board . 12Explode View . 13Service Partlist . 14Factory Partlist . 15TABLE OF CONTENTSSCART BOARDVOLUME BOARDAUX BOARD LAMP BOARDHEADPHONE BOARDREMOTE CONTROL BOARDTUNER BOARDDECODER/MCU BOARDPOWER BOARDDISPLAY BOARDLOCATION OF PCBS1-1VERSION VARIATIONS:Type /Versio

5、ns:FeaturesBoard in used:MCD716Service policy* TIPS : C - Component Lever Repair.M - Module Lever Repair - Used/12 89/Feature diffrenceRDSSCARTECO STANDBY - DARKCMMMMMMMMType /Versions:MCD716/12 89/CCM/58/58DISPLAY BOARDTUNER BOARDHEADPHONE BOARDUSB BOARDPOWER BOARDDECODE BOARDSCART BOARD CCMMMCCCAm

6、plifierRated output power . 2 x 50W RMSFrequency response . 20 - 20000Hz, - 3dBSignal to noise ratio . 65dBAux input . 1V RMS 20kohmDiscLaser type . SemiconductorDisc diameter . 12cm/8cmVideo decoding . MPEG-1 / MPEG-2 / DivxVideo DAC . 12BitsSignal system. PAL / NTSCVideo format . 4:3 / 16:9Video S

7、/N. 48dBAudio DAC . 24Bits / 96kHzTotal harmonic distortion. 65dBATunerFM tuning range . 87.5 - 108MHzTuning grid . 50KHzSensitivity Mono, 26dB S/N ratio. 50uV Stereo, 46dB S/N ratio . 100uVSelectivity . 28dBImage rejection . 25dBTotal harmonic distortion. 55dBASpeakersSpeaker impedance . 4 ohmSpeak

8、er driver, base . 5”Speaker driver, tweeter . 0.2”Frequency response . 60 - 20000 HzGeneral informationTotal output power . 2 x 75W RMSACpower. 220V - 230V, 50Hz / 60HzOperation power consumption . 55WStandby power consumption . 7WEco standby power consumption . 1WComposite video output .1.0Vp-p, 75

9、ohmCoaxial output . 0.5Vpp 0.1Vpp 75ohmHeadphone output . 2 X 15mW, 32ohmUSB direct . Version 1.1Dimensions Main unit (W x H x D) . 240 x 160 x 230mm Speaker box (W x H x D). 160 x 270 x 220mmWeight With packing . 15kg Main unit .5.15kg Speaker box . 3.15kgSpecifications subject to change withoutpri

10、or notice1-2SPESIFICATION1-3LF 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 Universal Test Cassette Fe SBC420 4822 397 30071LEVEL METERe.g. Sennheiser UPM550

11、with 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 Technology ST1700BFrame aeriale.g. 7122 707 89001Tuner AM (MW,L

12、W)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=50:Bandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTRF Generato

13、r 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 WARNINGAll ICs and many other semi-conductors aresusceptible to electrostatic disc

14、harges (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 t

15、hat 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 playabilityNYp

16、layabilityok ?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-Exchange CDM1 - 4 For description - see following pages1PLAYABILITY CH

17、ECKFor 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 t10secondsBlack dot from 00:50 to 01:10 jump forward/backward (sea

18、rch) 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 t10secondsFingerprint t10secondsBlack dot from 01:05 to 01

19、: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

20、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 CLEANINGBeca

21、use 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 functi

22、on.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.Thi

23、s to avoid that little particles make scratches onthe lens.INSTRUCTIONS ON CD PLAYABILITY1-62)7:$5(9(56,21&+(&. 83*5$(0&90&2-2MALFUCTION CHECK CHART2-2NoNoYesNoYesDVD displayno imageCheck video wire andvideo socket is good orbadCheck and changevideo wire and socketdecoder card isbrokenVFD displayno showCheck voltage offilaments for powerboard is good or badCheck the legs of filamentswhether have been short ofearth capacitorPower board isbrokenChange capacitorCheck VFD screen isgood or badChange VFD screenCheck cable isgood or badChange cableYesYes