Philips-MCD-122-Service-Manual电路原理图.pdf

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1、DVD Micro System TABLE OF CONTENTS3141 785 34131DB 10042009MCD122RecordableReWritableLocation of PC Boards . 1-1Electronic Specification . 1-2Measurement Setup . 1-3Service Aids. 1-4Instruction On CD Playability . 1-5 to 1-6Software Version Check & Upgrade . 2-1Malfuction Check Chart . 2-2Disassembl

2、y Diagram. 3-1Block Diagram . 4-1Wiring Diagram . 4-2Small Board . 5Circuit diagram . 5-1Layout diagram . 5-1LCD Display Board . 6Circuit diagram . 6-1Layout diagram . 6-2Power Board . 7Circuit diagram . 7-1 to 7-2Layout diagram . 7-3Decoder Board . 8Circuit diagram . 8-1 to 8-4Layout diagram . 8-5E

3、xploded View . 9-1Service Partlist . 10-1 to 10-2Factory Partlist . 11-1Version 1.1Location of PC BoardsVERSION VARIATIONS:Type /Versions:FeaturesBoard in used:MCD122Service policyLCD DISPLAY BOARDPOWER BOARDHEADPHONE BOARDDECODER BOARD* TIPS : C - Component Level Repair.M - Module Level Repair- Use

4、d/55/55/58/58/61/61/79/79/93/93/94/94/96/96/98/98/37/37/12/12/05/05Feature diffrenceRDSTDSVOLTAGE SELECTORECO STANDBY - DARKCMMMType /Versions:MCD122AMP/Power BoardDecoder Board Scart BoardLCD Display Board USB/Headphone Board1-1SCART BOARDCMMMMCMMMAMPLIFIERRated Output Power . 2X20W RMSSignal-to-no

5、ise ratio .65dBAFrequency response . 20Hz-20kHz 3dBAux Input . 1V/ RMS 16kohmDISCLaser Type . SimeconductorDisc Diameter . 12cm/8cmSupport Disc .CD-DA,CD-R,CD-RW,MP3,DVD,DVD-RW,DVD+RWAudio DAC .1KHzTotal Harmonic Distortion . 65dBA.TUNERFM Tuning Range . 87.5-108 MHzTuning grid . 100K/50KHzSensitivi

6、ty Mono, 26dB S/N Ratio . 5uV. Stereo, 46dB S/N Ration . 100uVSelectivity . 33dBImage Rejection . 25dBTotal Harmonic Distortion . 3%Signal to Noise Ration . 50dBASPEAKERSSpeaker Impedance . 2x8ohme.Speaker Driver, base .4”Speaker Driver, tweeter . BuzzerFrequency Response . 100Hz +5dB+/-5 15KHzGENER

7、AL INFORMATIONTotal Output power .40W RMSAC Power .220V / 50Hz.Operation Power Consumption . 40WStandby Power Consumption . 6WEco Standby Power Consumption . 1WHeadphone Output . 500mV 32ohm.USB Direct . Version 2.0Dimensions Main unit (w x h x d) . 220x90x240mm Speaker box (w x h x d) . 100x220x160

8、mm SUBwoofer(w x h x d) .NAWeight With Packing . 6KG Main Unit .1.65 KG Speaker box .1.5x2KG SUBwoofer. NASpecifications and external appearance aresubject to change without notice.1-2Electronic Specification1-3LF Generator e.g. PM5110RecorderUse Universal Test Cassette CrO2 SBC419 4822 397 30069LEV

9、EL 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 UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BLRDUTCDUse Audio Signal Disc(replaces test disc 3)

10、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,LW)To avoid atmospheric interference all AM-measurements have to be carried out in a Faradays cage.Use a bandpass filt

11、er (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 Generator e.g. PM5326S/N and distortion metere.g. Sound Technology ST1700BUse a bandpass filter to eliminate hum (50Hz, 100Hz

12、) and disturbance from the pilottone (19kHz, 38kHz).Ri=50:Tuner FMMEASUREMENT SETUP1-4SERVICE 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 areconnect

13、ed 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 usedSafet

14、y 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 cleaning12

15、3For flap loaders (= access to CD drive possible)cleaning method 4 is recommendedINSTRUCTIONS ON CD PLAYABILITY1-Exchange 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 (6

16、00 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 (search) within a reasonable timeFor all other sets use CD-DA SBC 444A.4822 397 30245TR 14 (600 Black dot) maximum at 01:

17、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 01:25 jump forward/backward (search) within a reasonable time2CUSTOMER INFORMATIONIt is proposed to add an addendum she

18、et 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

19、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

20、 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 cleane

21、r.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 PLAYABILITY1-2-1Software Version Check

22、& UpgradeUpgrade softwareSoftware version and date checkSelectOKOKVersion InformationBE VER: MCD122/xx Vxx yyyy.mm.ddFE VER: DE4-MAIN.FE.ASA.01.8B.37DSP VER: DSP.01CE VER: ZRXF2.yymmddRegionCode: xMCU VER: Vxx yyyymmdd1, In the absence of USB/DISC state or STOP status, press the “SYSTEM/MENU” on rem

23、ote control, TV Screen Display:UpgradingSoftware UpgradeErasure and UpgradeOK CancelSoftware UpgradeUpgradingPlease dont remove the player powerDoor OpenOR1.Download the software from Philips support website:2. Load the CD Disc or USB device with software,Software upgrade procedurestarts automatical

24、lyWaiting a minuteVFD Display:TV Screen Display:Software upgrade finish.Software upgrade finish.http:/ OpenWaiting a minuteLOADINGNo powerCheck if the Power Cord is connectedCheck the AC outletNo soundCheck if the speakers are connected correctlyCheck if the MainBoard has provided voltageCheck if th

25、e Main Board has provided voltageReplace a new oneSwitch on the TimerNo displayCheck if the Dc outputprovided voltage (about 34.5V)Adjust the volume Check the files or folders inUSB or others devices has not exceeded the certain limitTime/Clock does not workPlug in the power cordReset the Time/Clock

26、Replace a new Power Board Check if the USB or other devices are connectedCheck if the USB or otherdevices are incompatibleCheck the data wire which connected the Main Board,if has provided voltage Check if there is voltagesupplied to the USB BoardCheck if the CPU IChas provided voltageCheck if the V

27、FD Boardhas provided voltageNoReplace a new oneNoReplace a new AC Cable NoReplace a new one NoReplace the IC PT6311/SC16311/CD16311NoReplace the Main Board NoNoCheck if the CPU IChas provided voltageReplace the Main Board NoYYYYYYYYMalfunction Follow Check Chart2-2 2-2Disassembly Diagram3-13-1B.Remo

28、ve the Top-cabinetB1.Loose 2pcs screws(3 x 6 KB) of both side near to the back side.B2.Loose 2pcs screws(3 x 8 Km) of both side near to the front cabinet.B3.Loose 1pc screw(3 x10 FA) of the back side.C.Remove the Power BoardC1.Loose 1pc screw(3 x10 FA) of the back side.C2.Loose 1pc screw(3 x 8 BA)E.

29、Remove Decoder BoardE1.Loose 4pcs screws(3 x 10 FA) of the back side.E2.Loose 2pcs screws(3 x 10 FA) of the decoder board.D.Loose 4pcs screws(3 x 10 PWA)to remove DVD Loader DriverF.Loose 2pcs screws(3 x 8 FT)to remove the Front CabinetG.Loose 1pc screw(3 x 8 BA)to remove the Headphone BoardA.Open the DVD Door and loose 2 clippsto remove the doorH.Remove the Display BoardH1.Loose 6pcs screws(3 x 8 BA)H2.Loose 4pcs screws(2 x 8 BT) AB1B2B3C1C2DE1E2FGH2H1