Kenwood-DVF5020-cd-sm 维修电路原理图.pdf

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1、DVD VCD CD PLAYERDVF-5020SERVICE MANUAL 1999-9/B51-5580-00 (K/K) 135570%In compliance with Federal Regulations, following are repro-ductions of labels on, or inside the product relating to laserproduct safety.KENWOOD-Crop. certifies this equipment conforms to DHHSRegulations No. 21 DFR 1040. 10, Cha

2、pter 1, Subchapter J.DANGER : Laser radiation when open and interlockdefeated.AVOID DIRECT EXPOSURE TO BEAMCaution : No connection of ground line if disassemblethe unit. Please connect the ground line onrear panel, PCBs, Chassis and some others.NOTE : Please use the remote controllerfor self-diagnos

3、is and tilt adjust-ment.AC INAV1AV2S VIDEO OUTVIDEOOUTAUDIO OUTLRDIGITAL AUDIO OUTOPTICALCENTERFRONTSURROUNDSUBWOOFERSURROUNDLRFRONT RR/L(PCM/BIT STREAM)COAXIALSTANDBYVIRTUALSURROUNDOPEN/CLOSETray top(A29-1093-08)Front panel(A60-1820-08)Power button(K27-2399-08)Front cover(B10-3573-08)Leg(J02-1468-0

4、8)Top cover(A01-3749-08)Pin jack(E63-1149-08)AC inlet(E40-8593-08)ConnectorX2(E40-8598-08)Y/C connector(E63-1148-08)Oscillating module(W02-2735-08)Pin jack(E63-1151-08)Pin jack(E63-1150-08)This manual is available for repair in the Europe markets. In other market, please refer to servicemanual (B51-

5、5583-00).DVF-5020(k) COVER1,1p( 99.11.1 4:53 PM yW 1RadioFans.CN 收音机爱 好者资料库DVF-50202CONTENTS / ACCESSORIESCONTENTS / ACCESSORIES . 2DISASSEMBLY FOR REPAIR.3BLOCK DIAGRAM .14CIRCUIT DESCRIPTION.18ADJUSTMENT.21ABBREVIATION.22VOLTAGE CHART.24WIRING DIAGRAM.33PC BOARD . 34SCHEMATIC DIAGRAM . 39EXPLODED

6、VIEW .64PARTS LIST.67SPECIFICATIONS .Back coverContents(A70-1353-08)(E30-2937-08)(E30-2938-08)(E30-2365-05)Remote control unit . . . . . . . . . 1for remote control unit size AABatteries. . . . . . . . . . . . . . . . . . . . 2AC cord. . . . . . . . . . . . . . . . . . . . . 1Video/audio cable. . .

7、. . . . . . . . . 1Digital cord. . . . . . . . . . . . . . . . . . . 1(E30-2945-08)Audio cable. . . . . . . . . . . . . . . . . . . 2AccessoriesNote: There is different part in this manual as compared with a usual one because we use OEMfactorys data.DVF-5020(k) COVER1,1p( 99.11.1 4:53 PM yW 2RadioFa

8、ns.CN 收音机爱 好者资料库DVF-50203DISASSEMBLY FOR REPAIR1-1 Casing Parts and C.B.A. Positions1. Assembling and Disassembling the Casingand Checking C.B.A.s1-4 Disassembling the Front Panel1. Release the 3 tabs on the bottom.2. Release the 2 tabs on the left and right.3. Release the 2 tabs.4. Disconnect the 2

9、 flexible cables.1-5 Disassembling the Loading Base Unit1. Remove the 4 screws.2. Pull out the loading base unit vertically.NoteThere is a danger of damaging the connectors.1-2 Service PositionsNoteTo inspect the loading base unit, position the left sideupward (as viewed from the front).1-3 Disassem

10、bling the Tray1. Turn the lever clockwise.2. Move the tray in the direction of the arrow until it locks.3. Release the tab locks on the left and right, then pull outthe tray.Extension cable (A)Extension cable (B)x2DVF-5020(k) COVER1,1p( 99.11.1 4:53 PM yW 3DVF-50204DISASSEMBLY FOR REPAIR1-6 Checking

11、 the Module C.B.A.1. Remove the 2 screws.2. Connect the module C.B.A. to the mother C.B.A. with theextension cables for inspection. Extension cable (B)x2Mother C.B.A. Module C.B.A.PP24201-PS4201PP23201-PS3201NoteBe sure to initialize the player whenever you replace aC.B.A. (Refer to page21/4-1 Initi

12、alizing the DVD Player.)1-7 Disassembling the Rear Panel,1. Remove all of the screws connected to the rear panel.(The number of screws varies according to the model).1-8 Checking the Power Supply C.B.A.1. Remove the 3 screws.2. Carefully pull out the power supply C.B.A.NoteThere is a danger of damag

13、ing the connectors.3. Connect the power supply C.B.A. and the mother C.B.A.with the extension cable for inspection. Extension cable(A) (connects the power supply C.B.A.PS1101 and the mother C.B.A. PP1101)2. Release the two tabs on the left and right.Extension cable(A)DVF-5020(k) COVER1,1p( 99.11.1 4

14、:53 PM yW 4DVF-50205DISASSEMBLY FOR REPAIR1-9 Checking the Mother C.B.A.1. Remove the 5 screws.2. Release the 2 tabs.2. To preserve the quality of the optical pickup replacementparts during transport and installation, the terminals ofthe laser diode are short-circuited. After replacing theparts, use

15、 the proper procedure to return the laser diodeto its original condition. (Refer to page9/2-12 Assemblingthe Optical Pickup.)3. Testers cannot be used to check the laser diode of theoptical pickup. The power supply inside the tester caneasily damage the laser diode.4. Take care when handling the fle

16、xible cable becauseexcessive force can cause it to break.5. You cannot adjust the semifixed resistor for laser poweradjustment. Do not turn it.2-2 Disassembly ProcedureUse the following procedure to replace major parts. For the assembly procedure, follow the flow chart in reverse.3. Checked by conne

17、cting the module C.B.A. and the moth-er C.B.A. with the extension cables.Extension cable (B)x2Module C.B.A. Mother C.B.A.PS3201-PP23201PS4201-PP24201NoteBe sure to initialize the player whenever you replace aC.B.A. (Refer to page21/4-1, Initializing the DVD player.)2. Assembling and Disassembling th

18、e OpticalPickup (Mechanical Parts)The optical pickup can be damaged by static electricity fromyour body. Be sure to take static electricity countermeasureswhen working around the optical pickup.2-1 Handling the Optical PickupThe optical pickup can be damaged by static electricityfrom your body. Be s

19、ure to take static electricity counter-measures when working around the optical pickup.1. The optical pickup is an extremely high-precision mecha-nism. Do not subject it to strong impact.Extension cable(B)Extensioncable(B)DVF-5020(k) COVER1,1p( 99.11.1 4:53 PM yW 5DVF-50206DISASSEMBLY FOR REPAIR2-3

20、Lubricating the Loading Base UnitWhen replacing parts, lubricate the parts maked “xxx” in the diagramPart numberService ToolGrease410-0013-05Grease EM-30LGDVF-5020(k) COVER1,1p( 99.11.1 4:53 PM yW 6DVF-50207DISASSEMBLY FOR REPAIR2-4 Static Electricity CountermeasuresThe laser diode inside the traver

21、se unit (optical pickup) canbe damaged by static electricity from your body. Be sure totake static electricity countermeasures when working aroundthe optical pickup.2-4-1 Static Electricity Countermeasure Methods1. Ground yourself Use an anti-static wrist strap to discharge static electrici-ty from

22、your body.2. Ground the workbenchLay a conductive material (sheet) or steel sheet on thesurface where the traverse unit (optical pickup) is to beplaced, then ground the sheet.2-5 Disassembling the Clamp Base UnitRemove the 2 screws.2-6 Disassembling the Clamper Weight, ClamperYoke, Magnet and Clampe

23、r1. Release the tab, and pull out the clamper.2. Release the 3 tabs on the clamper.2-4-2 Short-circuit the laser diodeSolder the land in the flexible cable of the optical pickup.Notes Be sure to do this befer disconnecting the flexible cableof the optical pickup from the module C.B.A. Use an anti-st

24、atic soldering iron to short-circuit andunshort-circuit laser diode.(Recommended soldering iron: Hakko with ESD counter-measure) After you have finished repairing the laser diode, followthe correct procedure to remove the solder from theshort-circuit location. (Refer to page5/2. Assembling andDisass

25、embling the Optical Pickup (Mechanical Parts).)DVF-5020(k) COVER1,1p( 99.11.1 4:54 PM yW 7DVF-50208DISASSEMBLY FOR REPAIR2-7 Disassembling the Traverse Unit1. Remove the 3 screws.NoteBe sure to take static electricitiy countermeasures beferdisconnecting the flexible cable.(Refer to page7/2-4 Stat-ic

26、 Electricity Countermeasures.)2. Disconnect the 2 flexible cables.2-8 Disassembling the Stepping Motor Unit1. Disconnect the flexible cable.2. Remove the 2 screws.NoteTake care when handling the flexible cable because itcan be broken by excessive force.2-9 Disassembling the Optical Pickup Unit1. Rem

27、ove the hook of the FPC holder, then remove theFPC holder itself.2. Remove the screw.3. Release the tab, then remove spring holder 1.NoteBe sure not to lose the spring.4. Remove the guide shaft.NoteBe sure to adjust the optical pickup tilt after replacing theoptical pickup.(Refer to page10/2-14 Opit

28、cal Pickup Tilt Adjustment.)DVF-5020(k) COVER1,1p( 99.11.1 4:54 PM yW 8DVF-50209DISASSEMBLY FOR REPAIR2-10 Disassembling the Nut Unit1. Remove the screw.Notes The nut unit is not part of the optical pickup.Before replacing the optical pickup, remove the nut unitfor use with the new optical pickup. A

29、fter installation, use screw lock to lock the screw in posi-tion. When reassembling, use screw lock to lock the screw inposition after attaching it.2-12 Assembling the Optical Pickup1. Install the optical pickup.NoteTake care not ot attach the tilt spring and guide shaft inthe wrong order.2. Fit the

30、 protruding part of the pickup FPC into the convex-part of the FPC holder to install it.2-11 Disassembling the Sub-Shaft Preload Spring1. Remove the screw.Notes Handle the sub-shaft preload spring carefully because theshape of the tip is easily deformed. The sub-shaft preload spring is not part of t

31、he opticalpickup. Before replacing the optical pickup, remove thesub-sahft preload spring for use with the new opticalpickup. After installation, use screw lock to lock the screw in posi-tion.DVF-5020(k) COVER1,1p( 99.11.1 4:54 PM yW 9DVF-502010DISASSEMBLY FOR REPAIR3. Insert the pickup FPC into con

32、nector FP5201 on the mod-ule C.B.A.2-14 Optical Pickup Tilt Adjustment4. Remove the solder from the pickup FPCs soldered short-circuit.5. Adjust the optical pickup tilt after removing the solder.(Refer to page10/2-14 Optical Pickup Tilt Adjustment.)2-13 Disassembling the Spindle Motor Unit1. Remove

33、the three screws.NoteBe sure to adjust the optical pickup tilt after replacing thespindle motor unit.DVF-5020(k) COVER1,1p( 99.11.1 4:54 PM yW 10DVF-502011DISASSEMBLY FOR REPAIRNotes Adjustment is generally unnecessary after replacing otherparts of the traverse unit. However, adjust if there is anot

34、iceable degradation in picture quality. Optical adjustments cannot be made inside the opticalpickup. Adjustment is generally unnecessary after replacing thetraverse unit. Adjustment is generally unnecessary after replacing thetraverse unit.DVF-5020(k) COVER1,1p( 99.11.1 4:54 PM yW 11DVF-502012DISASS

35、EMBLY FOR REPAIR2-15 Disassembling the Intermediate Chassis1. Push the stopper downward, then rotate it until it contactsthe Vertical cam.2. Release the 2 tabs.2-17 Disassembling the Pulley Gear and Decelera-tion Gear1. Remove the screw.2. Remove the pulley gear.3. Remove the belt.4. Remove the dece

36、leration gear.2-18 Disassembling the Mechanism LoadingC.B.A.1. Remove the 2 screws.2. Remove the 2 screws.3. Release the three tabs.2-16 Disassembling the Vertical cam and Drivegear1. Rotate the Vertical cam until it reaches the contact posi-tion.2. Lift the Vertical cam straight upward to pull it o

37、ut.3. Remove the Drive gear.DVF-5020(k) COVER1,1p( 99.11.1 4:54 PM yW 12DVF-502013OVERALL BLOCK DIAGRAMIC4231CNTSWCONVERTERD/AAUDIO27MHzAUDIO DIGITAL OUTIC3201 MOTHER C.B.A. IC3071IC3061IC6001IC2511IC2501 MECHANISM UNIT MODULE C.B.A. CR(R)CB(B)Y(G)S-VIDEO OUTVIDEO OUTIC3531IC4221IC4211IC4201SLSRFLFR

38、MIXRMIXLCONVERTERD/AVIDEODRIVERVIDEOCONVERTERD/AAUDIOCONVERTERD/AAUDIOCONVERTERD/AAUDIOIC3001IC7001IC2001IC5202(AV DEC)DECODERAVSRAM16BIT(ODC)CONTROLLERDISCOPTICALSRAM16BITCOILTRACKINGCOILFOCUSMOTORSTEPPINGCPUSUBKEYREMOCONLEDOSDFL(DSC)CONTROLLERSERVODIGITALIC6302IC6201CPUMAINDRAM4M16.9MHzDRIVEMOTOR4

39、chMOTORLOADINGDRIVEMOTORSPINDLEMOTORSPINDLE(FEP)PROCESSORENDFRONTUNITPICK UPOPTICALDVF-5020(k) COVER1,1p( 99.11.1 4:54 PM yW 1314DVF-5020SERVO BLOCK DIAGRAM(0.5sec./DIV.)CLOSE 2.5Vp-pIC2501-25(UP),IC2501-27(DOWN)5.0Vp-p(20usec./div.)IC2501-247.2Vp-p(20usec./div.)IC2511-11,12,13,14(0.5sec./DIV.)OPEN

40、2.5Vp-pIC2501-25(UP),IC2501-27(DOWN)RF SIGNALSPINDLE MOTOR DRIVE SIGNALSTEPPING MOTOR DRIVE SIGNALTRACKING ERROR SIGNALFOCUS ERROR SIGNALBRKFINRINSSFGCFGECECROPIN2-OPIN1-OPIN3-OPIN4-TRAY CLOSETRAY OPENBRKTRAY SET2TRAY SET1SSFGCFGECECRTRV-SWFOCUS DRIVETRAKING DRIVETRSDRV-BTRSDRV-AX TRONOFTRBDOJIT OUT

41、LDONALDONBFBALFETBALTERDCKPRDCKNRDTPRDTNVIN4VIN3VIN2VIN1VIN5VIN6STNBYSTD1SCKSENDAT3DAT2DAT1DAT0SBI1SBO1SBT1CPUIRQCPCENCPSENOUT2OUT1A3A2A1H1+H1-H2+H2-H3+H3-VO2-VO2+VO1-VO1+VO4+VO4-VO3+VO3-QCDOPTICAL PICK UP UNITPHOTO DETECTORB3B4B2B1A3A2A4A1LASER DIODEAMPHEADQ5201LD DRIVE43IC6303(EEPROM)AMP1121131141

42、157176506052727055265IC6201(CPU)IC7001(ODC)INTERFACEBALANCEFOCUSBALANCETRACKING22212019979695949291232192366656412132850494847(FEP)IC52026163626038373635343312810744819893209140414243178131216141111201211110310210510423269234567161110151219182527232628111213141516171863(DSC)IC2001QR25025413AMPQR2503

43、QR2501AMP5413AMP(MOTOR DRIVE)(SPINDLE MOTOR DRIVE)IC2501IC2511M2601LOAD M-LOAD M+MOTORLOADINGS2601TRAY OPENTRAY CLOSEM3M2M1H1-HALL1H1+H2-H2+HALL2H3+H3-TRV-SWHALL3TRAVERSE SWITCHACT T-ACT T+ACT F-ACT F+STEPPING MOTOR UNITSTEPPING MOTORLOADING MOTOR UNITSPINDLE MOTOR UNITOPTICAL PICK UP UNITACTUATORCO

44、ILTRACKINGCOILFOCUSDVF-5020(k) COVER1,1p( 99.11.1 4:54 PM yW 14DVF-502015VIDEO BLOCK DIAGRAMVIDEO SIGNALMODELEXCEPT EUROPEQ3503AMPQR63111.2Vp-p(20usec./div)PS3801-19 PLAY1.2Vp-p(20usec./div)PS3801-18 PLAY1.0Vp-p(20usec./div)PS3801-17 PLAYIC3813HLHLHLHLLHHLHLHHLL SCART C.B.A. V-OUTGREEN-I/OV-OUTBLUE-

45、I/O711151919RED-I/ORGBHIC3831IC3831IC3841IC3841IC3841J3871-IC3821J3871-J3871-J3881-J3871-VCYRGBHRGBJ3881-IC3812J3871-YCJ3881-YCIC3811RGBIC3822IC3822YCIC3822IC3821J3881YCJ3881IC382120HH15H20H117H1.2Vp-p(20usec./div.)IC3201-242.2Vp-p(20usec./div.)IC3531-192.2Vp-p(20usec./div.)IC3531-161.5Vp-p(20usec./

46、div.)IC3201-251.2Vp-p(20usec./div.)IC3531-140.64Vp-p(20usec./div.)IC3201-330.68Vp-p(20usec./div.)IC3201-296.0Vp-p(20usec./div.)IC3001-148*155 MODULE C.B.A. MOTHER C.B.A. (AV DECORDER)IC3001XRST13IC6201-79PINFROMNRSTXRESET44Q3211AMPAMPQ3201FL3501B.P.F.L.P.F.FL3511Q3501AMPAMPQ3511Q3502AMPAMPQ3512VR351

47、1VR3501C ADJ.Y ADJ.Q3601AMPQ3602AMPQR3601NRIC6201-80PINFROMAMPQ3513AMPQ3603VIDEO OUT(VIDEO DRIVER)IC3531141619COUTVOUTCYOUT3 Y11VD7VD0155154153152151150149148(VIDEO D/A CONVERTER)IC3201IC6201-10PINFROMSDATAIC6201-9PINFROMSCLOCKP7P0SDATASCLOCK212098765432CB/B ADJVR3201CR/RCB/BY/GCYDAC-CDAC-BDAC-ADAC-

48、FDAC-E382933352425ONLYEUROPE MODEL AMPQ3221AMPQ3231AMPQ3241FL3561FL3551B.P.F.AMPQ3571AMPQ3561Q3551AMPJAPAN MODEL ONLYQR3521QR3522WIDE1IC6201-53PINFROMIC6201-5PINFROMWIDE2S-VIDEO OUTDVF-5020(k) COVER1,1p( 99.11.1 4:55 PM yW 15DVF-502016AUDIO BLOCK DIAGRAMAMPAMPAMPAMPAMPAMPAMPAMPAMPAUDIO SIGNALRch OUT

49、Lch OUTA MUTIC6201-3PINFROM2IC430117IC43016NRSTIC6201-79PINFROMSBO1IC6201-72PINFROMSBT1IC6201-70PINFROMMIXRSTBDACMIXL1316IC6201-59PINFROM(AUDIO D/A CONVERTER)IC4201282726221326IC436270.7Vp-p(0.5msec./div.)0.6Vp-p(0.5msec./div.)IC4211-13,166.4Vp-p(10usec./div.)IC3001-117T47613IC4781OPTICALDIGITAL AUD

50、IO OUTCOAXIALDIGITAL AUDIO OUTJK47716431IC475135IC475172IEC OUT110SW OUTCNT OUTSR OUTSL OUTFR OUTFL OUTIC6201-3PINFROMA MUTA MUTIC6201-3PINFROMIC6201-3PINFROMA MUT1IC432126IC436171IC436136IC434171IC434127IC43216NRSTIC6201-79PINFROMSBO1IC6201-72PINFROMSBT1IC6201-70PINFROMSWSTBDACCNT1316IC6201-59PINFR