Philips-MCD-906-Service-Manual电路原理图.pdf
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1、609DCM metsyS orciM DVDTABLE OF CONTENTS3141 785 33011DB 09462008Location of PC Boards . 1-1Specification . 1-2Measurement Setup . 1-3Service Aids . 1-4Instruction On CD Playability .1-5 to 1-6Software Version Check & Upgrade . 2-1Malfuction Check Chart . 2-2Decoder Board .11Disassembly Diagram .3-1
2、Block Diagram . 4-1Wiring Diagram. 4-2VFD Display Board .5Circuit diagram . 5-1Layout diagram . 5-2Prepositive Board .6Circuit diagram . 6-1Layout diagram . 6-2AMP Board .7Headphone,Button&AUX Board Diagram .8Circuit diagram . 7-1Layout diagram . 7-2TUNER Board .10Circuit diagram . 10-1Layout diagra
3、m . 10-2Circuit diagram .11-1 to 11-8Layout diagram .11-9 to 11-10LAMP Board . 9Explode View .12-1Service Partlist . 13-1 to 13-3Version 1.1Location of PC Boards1-1VERSION VARIATIONS:Type /Versions:FeaturesBoard in used:MCD906Service policyBUTTON BOARDAMP BOARDLAMP BOARDHEADPHONE BOARDPREPOSITIVE BO
4、ARDDISPLAY BOARDAXU BOARDTUNER BOARDDECODER BOARD* TIPS : C - Component Lever Repair.M - Module Lever Repair- Used/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 - DARKMMMMMMMMMMM MType /Versions:MCD906TUNER BOARDPREPOSITIVE BOARDD
5、ISPLAY BOARDHEADPHONE BOARDDECODER BOARDAUX BOARDAMP BOARDSCART BOARD(12/05version)ECO POWER BOARD(12/05version)VOLTAGE SELECTOR BOARD(98version)LAMP BOARDBUTTON BOARDMMMMMMAMPLIFIERRated Output Power . .2 x 75W RMSSignal-to-noise ratio . 65 dBAFrequency response . 40Hz + 3dB+/-3 20KHz Aux Input.0.5
6、V RMS 47kohmDISCLaserType . SemiconductorDisc Diameter. 12cm/8cmSupport Disc .DVD,DVD-R,DVD-RW,DVD+RW,CD-DA,MP3,CD-RWAudio DAC .24Bits / 44.1kHzTotal Harmonic Distortion . 28dBImage Rejection .25dBTotal Harmonic Distortion . 65dBASPEAKERSSpeaker Impedance . 4ohmSpeaker Driver, base .5 1/4“Speaker Dr
7、iver, tweeter .BUZZERFrequency Response .40Hz + 3dB+/-3 20KHzGENERAL INFORMATIONTotal Output power . 150W RMSAC Power . 220-230V / 50Hz/60HzOperation Power Consumption . 85WStandby Power Consumption .4WEco Standby Power Consumption .1WHeadphone Output . 2X15mW 32ohmUSB Direct . Version 1.1Dimensions
8、 Main unit (w x h x d) .275x126x250mm Speaker box (w x h x d).186x300x222.5mmWeight With Packing . 16.5 KG Main Unit .5.0KG Speaker box . . 4.5x2KGSpecifications and external appearance aresubject to change without notice.1-2Specification1-3LF Generator e.g. PM5110RecorderUse Universal Test Cassette
9、 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 UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BLRDUTCDUse Audio Sig
10、nal 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,LW)To avoid atmospheric interference all AM-measurements have to be carried out in a Far
11、adays 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 Generator e.g. PM5326S/N and distortion metere.g. Sound Technology ST1700BUse a bandpass filter
12、 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 discharges (ESD).Careless handling during repair can reduce lifedrastically.When repairing,
13、 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 wit
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