Philips-MCM-906-Service-Manual电路原理图.pdf

DVD Micro System MCM906TABLE OF CONTENTS3141 785 33070DB 08312008Location of PC Boards . 1-1Specification . 1-2Measurement Setup . 1-3Service Aids . 1-4Instruction On CD Playability .1-5 .1-6Software Version Check & Upgrade . 2-1Malfuction Check Chart . 2-2Decoder Board .11Disassembly Diagram .3-1Block 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 diagram . 10-2Circuit diagram .11-1 to 11-4Layout diagram .11-5 to 11-6LAMP Board . 9Explode View .12-1 Service Partlist .13-1 to 13-2Factory Partlist .13-3 to 13-11Location of PC Boards1-1VERSION VARIATIONS:Type /Versions:FeaturesBoard in used:MCM906Service policyBUTTON BOARDAMP BOARDLAMP BOARDHEADPHONE BOARDPREPOSITIVE BOARDDISPLAY BOARDAXU BOARDECO-POWER BOARDM-boy 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 - DARKCCCMMMMMMMType /Versions:MCM906TUNER BOARDPREPOSITIVE BOARDDISPLAY BOARDHEADPHONE BOARDDECODER BOARDAUX BOARDAMP BOARDSCART BOARD(12/05version)ECO POWER BOARD(12/05version)VOLTAGE SELECTOR BOARD(98version)LAMP BOARDBUTTON BOARDAMPLIFIERRated Output Power .75W x 2 RMSSignal-to-noise ratio . 65 dBAFrequency response . 40Hz + 3dB+/-3 20KHz Aux Input.0.5V RMS 47kohmDISCLaserType . SemiconductorDisc Diameter. 12cm/8cmSupport Disc .MP3,CD-DA,CD-R,CD-RWAudio DAC .24Bits / 44.1kHzTotal Harmonic Distortion . 33dBImage Rejection .>25dBTotal Harmonic Distortion . 65dBASPEAKERSSpeaker Impedance . 4ohmSpeaker Driver, base .5 1/4“Speaker Driver, tweeter .25Frequency Response .40Hz + 3dB+/-3 20KHzGENERAL INFORMATIONTotal Output power . 1 5 0 W RMSAC Power . 220-230V / 50HzOperation Power Consumption . 85WStandby Power Consumption .<4WEco Standby Power Consumption .<1WHeadphone Output . 2X15mW 32ohmUSB Direct . Version 1.1Dimensions 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 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 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,LW)To avoid atmospheric interference all AM-measurements have to be carried out in a Faraday´s 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 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, 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 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 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 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 (600µ 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 (600µ Black dot) maximum at 01:15TR 19 (Fingerprint)TR 10 (1000µ wedge) playback of all these tracks without audible disturbanceplaying time for: 1000µ 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 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 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 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 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 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 & UpgradeUpgrade softwareSoftware checkPress the “display” button quartic continuously on remote control,display showing as below:1.Downloading the software form Philips support website2.Put in the Software CD Disc or USB,when it is loadingWaiting a minute,till hear a long ding voice. Softwareupgrade finish.http:/www.philips.com/supportVxx dyyyy2-2 Malfunction follow check chart -13-1Disassembly Diagram11112213211112A,Loosen screws as below sketch map toopen the top cabinet:1,screws:3x6BMTT(3PCS)2,screws:3x6FMTT(2PCS)E,Loosen screws as below sketch map toremove the Decoder Board:1,screws:3x10PA(1PCS)2,screws:3x6BM(2PCS)H,Loosen screws as below sketch map toremove the USB Board:1,screws:3x6PA(1PC)I,Loosen screws as below sketch map toremove the LAMP Board:1,screws:2.6x4BB(2PCS)F,Loosen screws as below sketch map toremove the Prepositive Board:1,screws:3x6PA(2PCS)G,Loosen screws as below sketch map toremove the Display Board:1,screws:2.6x6BB(10PCS)B,Loosen screws as below sketch map toremove the both sides panels:1,screws:3x6PA(6PCS)2,screws:3x10PA(2PCS)C,Loosen screws as below sketch map toremove the DVD mechanism bracket:1,screws:3x12BA(2PCS)2,after loosed the screws, push the DVD mechanismbracket breadthwise to remove itD,Loosen screws as below sketch map toremove AMP board:1,screws:3x10PA(1PC)2,screws:3x10PA(4PCS)DVD mechanism bracketAluminium Top Cover 3,screws:3X6PMTT(1pc)