Philips-MCD-772-Service-Manual电路原理图.pdf

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1、DVD Micro System MCD772 TABLE OF CONTENTS 3141 785 32711DB 08392008 Location of PC Boards . 1-1Specification . 1-2 Measurement Setup . 1-3 Service Aids . 1-4 Instruction On CD Playability .1-5 to 1-6Software Version Check & Upgrade . 2-1Malfuction Check Chart . 2-2Power Board . 9Decoder Board .10Dis

2、assembly Diagram .3-1 to 3-2Block Diagram . 4-1Wiring Diagram. 4-2Volume Board .5-1Display Board .6Circuit diagram. 6-1Layout diagram. 6-2TUNER Board .8AUX,USB&Headphone Board .7Circuit diagram. 8-1Layout diagram. 8-2Circuit diagram .10-1 to 10-9 Layout diagram .10-10 to 10-11 Circuit diagram . 9-1

3、to 9-2 Layout diagram . 9-3 Explode View .11-1 to 11-2Service Partlist .12-1 to 12-2Factory Partlist .13-1 to 13-6Version 1.11-1Location of PC BoardsDECODER BOARDHEADPHONEBOARDAUX BOARDVOLUME BOARDTUNER BOARDVFD DISPLAY BOARDFANPOWER BOARD110/220 CHANGING BOARDVERSION VARIATIONS:Type /Versions:Featu

4、resBoard in used:MCD772Service policyDISPLAY BOARDUSB BOARDAXU BOARDTUNER BOARDHEADPHONE BOARDDECODER BOARDVOLUME BOARDPOWER 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 SELECTO

5、RECO STANDBY - DARKCMMMMMMMType /Versions:MCD772AMPLIFIERRated Output Power . .2 x 50W RMSSignal-to-noise ratio. 65 dBAFrequency response . 50Hz - 3 dB+/-2 20KHz Aux Input.0.5V RMS 47kohmDISCLaserType. SemiconductorDisc Diameter. 12cm/8cmSupport Disc .DVD,DVD-R,DVD-RW,DVD+RW,CD-DA,MP3,CD-RWAudio DAC

6、 .24Bits / 44.1kHzTotal Harmonic Distortion. 28dBImage Rejection .25dBTotal Harmonic Distortion. 50dBASPEAKERSSpeaker Impedance .4ohmSpeaker Driver, base.4.5“Speaker Driver,tweeter . 3“Frequency Response.50Hz -3dB+/-2 20KHzGENERAL INFORMATIONTotal Output power . 100W RMSAC Power.220-230V / 50Hz/60Hz

7、Operation Power Consumption. 55WStandby Power Consumption.4WEco Standby Power Consumption.1WHeadphone Output .2X15mW 32ohmUSB Direct. Version 1.1Dimensions Main unit (w x h x d). 248x280x105mm Speaker box (w x h x d). 206x170x270mmWeightWith Packing .9 KGMain Unit .3.5KGSpeaker box .3.3KGSpecificati

8、ons 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

9、 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 Technolo

10、gy 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=50:Bandpass250Hz 15kHze.

11、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).R=50:Tuner FMMEASUREMENT SETUP1-4SERVICE AIDSGB WARNINGAll ICs and many other

12、 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.

13、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 ?Nplayability

14、ok ?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 F

15、or 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 for: Fingerprint t10secondsBlack d

16、ot 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 disturbanceplaying time for: 1000 wedge t10second

17、sFingerprint 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 caus

18、ed 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 Regiona

19、l 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

20、 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 thesur

21、face of the lens by blowing clean air over it.This to avoid that little particles make scratches onthe lens.INSTRUCTIONS ON CD PLAYABILITY1-2-1 Software Version Check & UpgradeMCD772 VxxUpgrade softwareSoftware check3.Press SYSTEM on the remote open menu, press Left or Right to select “PreferencePag

22、e”, TV screen showing as below:Press Up or Down to select “Default” on remote, Press OK to exit reset.Software upgrade finish.Input password “811502” on remote, TV screen showing as below:Upgrade File detected-Preference Page-TV type PALAudio CHI EnglishSubtitle CHI FrenchDisc menu CHI SpanishParent

23、al ChineseJapaneseDefault KoreanRussianTjaiUpgrade?Press PLAY to startUpgradingCPU version check1.Downloading the software form Philips support website1.Keep press PLAY/PAUSE and STOP buttons,plug into the power cord at one time,TV showing as below:2.Load the CD Disc or USB with software,when it is

24、loading,the TV screen showing as below:Waiting half to one minute,till the TV screen showing disappear.Turnoff electrical source and reopen.http:/ : Date TimeRegion codeMCD772 / xxxxmm dd yyyyhh : mm : ssx2-2 Malfunction follow check chart Disassembly Diagram-DVD Part3-1 3-1A .rood DVD nepo ,rewop e

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