Kenwood-DV403-cd-sm 维修电路原理图.pdf

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1、DVD VCD CD PLAYERDV-403SERVICE MANUAL 2000-5/B51-5621-00 (K/K) 138070%In compliance with Federal Regulations, following are repro-duction of labels on, or inside the porduct relating to laserproduct safety.KENWOOD-Crop. certifies this equipment conforms to DHHSRegulations No.21 CFR 1040. 10, Chapter

2、 1, subchapter J.DANGER : Laser radiation when open and interlock defeat-ed. AVOID DIRECT EXPOSURE TO BEAM.Caution : No connection of ground line if disassemble the unit. Please connect the ground line onrear panel, PCBs, Chassis and some others.NOTE : Please use the remote controller for self-diagn

3、osis. DIGITAL OUTPUT(PCM/BIT STREAM)OPTICALAUDIO OUTPUTSUB WOOFERVIDEO OUTPUTCOMPONENTVIDEO OUTPUTCrCbYS-VIDEOAC INLRHolder P(J19-6058-08)Front panel(A60-1908-08)Tray top(A29-1120-08)Top cover(A01-3785-08)Legx4(J02-1468-08)Pin jack(E63-1170-08)Oscillation module(W02-2736-08)Y/C connector(E40-8534-08

4、)AC inlet(E40-8535-08)Pin jack(E63-1133-08)RadioFans.CN 收音机爱 好者资料库(A70-1444-08)Battery cover (A09-1193-08)(E30-2937-08)(E30-2938-08)(B19-1615-08)Remote control unit . . . . . . . . . 1for remote control unit size AABatteries. . . . . . . . . . . . . . . . . . . . 2AC cord . . . . . . . . . . . . . .

5、 . . . . . . . 1Video/audio cable. . . . . . . . . . . . 1Digital cord. . . . . . . . . . . . . . . . . . . 1DV-4032CONTENTS / ACCESSORIESCONTENTS / ACCESSORIES . 2DISASSEMBLY FOR REPAIR.3BLOCK DIAGRAM .12CIRCUIT DESCRIPTION.16ADJUSTMENT.18VOLTAGE CHART.19WIRING DIAGRAM.23PC BOARD . 24SCHEMATIC DIAG

6、RAM . 29EXPLODED VIEW .54PARTS LIST.57SPECIFICATIONS .Back coverContentsAccessoriesNote: There is different part in this manual as compared with a usual one because we use OEMfactorys data.On Circuit description, Lubrication and Abbreviation of Logo, please refer to DV-303service manual (B51-5561-00

7、 or B51-5583-00)How to read the schematic diagram There are some destinations in this schematic.Connection of from or to.Port nameRadioFans.CN 收音机爱 好者资料库DV-4033DISASSEMBLY FOR REPAIRExtensioncable(C)Extension cable(B)x2Extension cable(A)1-1 Casing Parts and C.B.A. Positions1. Assembling and Disassem

8、bling 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 flexible cables.1-5 Disassembling the Loading Base Unit1. Remove the 4 screws.2. Pull out the loading base un

9、it 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 Disassembling the Tray1. Turn the lever clockwise.2. Move the tray in the direction of the arrow until it locks.3. Rel

10、ease the tab locks on the left and right, then pull outthe tray.DV-4034DISASSEMBLY FOR REPAIRExtensioncable(C)Extension cable(B)Extension cable(B)1-6 Checking the Module C.B.A.1. Remove the screws.2. Connect the module C.B.A. to the mother C.B.A. with theextension cables for inspection. Extension ca

11、ble (B)x2Mother C.B.A. Module C.B.A.PP4201-PS4201PP3201-PS32013. Connect the mechanism loading C.B.A. to the motherC.B.A. with the extension cable: for inspection.Extension cable(C)Mother C.B.A. Mechanism Loading C.B.A.PP2591-PS2591NoteBe sure to initialize the player whenever you replace aC.B.A. (R

12、efer to page17/4-1 Initializing 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.NoteTh

13、ere is a danger of damaging 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)DV-4035D

14、ISASSEMBLY FOR REPAIRExtension cable(C)Extension cable(B)Extension cable(B)1-9 Checking the Mother C.B.A.1. Remove the 4 screws.2. Release the 2 tabs.2. Assembling and Disassembling the OpticalPickup (Mechanical Parts)The optical pickup can be damaged by static electricity fromyour body. Be sure to

15、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 sure to take static electricity counter-measures when working around the optical pickup.1. The optical pickup is an e

16、xtremely high-precision mecha-nism. Do not subject it to strong impact.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 the proper procedure to return the laser diod

17、eto its original condition. (Refer to page8/2-11 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 flexible cable becauseexcessive force can cause i

18、t 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 connecting the module C.B.A. and the moth-er C.B.A.

19、 with the extension cables.Extension cable (B)x2Module C.B.A. Mother C.B.A.PS3201-PP3201PS4201-PP42014. Checked by connecting the mechanism loading C.B.A.and the mother C.B.A. with the extension cables.Extension cable(C)Mechanism Loading C.B.A. Mother C.B.A.PS2591-PP4201NoteBe sure to initialize the

20、 player whenever you replace aC.B.A. (Refer to page17/4-1, Initializing the DVD player.)DV-4036DISASSEMBLY FOR REPAIR2-3 Static Electricity CountermeasuresThe laser diode inside the traverse unit (optical pickup) canbe damaged by static electricity from your body. Be sure totake static electricity c

21、ountermeasures when working aroundthe optical pickup.2-3-1 Static Electricity Countermeasure Methods1. Ground yourself Use an anti-static wrist strap to discharge static electrici-ty from your body.2. Ground the workbenchLay a conductive material (sheet) or steel sheet on thesurface where the traver

22、se unit (optical pickup) is to beplaced, then ground the sheet.2-4 Disassembling the Clamp Base UnitRemove the 2 screws.2-5 Disassembling the Clamper Weight, ClamperYoke, Magnet and Clamper1. Release the tab, and pull out the clamper.2. Release the 3 tabs on the clamper.2-3-2 Short-circuit the laser

23、 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-static soldering iron to short-circuit andunshort-circuit laser diode.(Recommended soldering iron: Hakko with ESD

24、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 andDisassembling the Optical Pickup (Mechanical Parts).)DV-4037DISASSEMBLY FOR REPAIR2-6 Disassembling the Traverse Unit1

25、. Remove the 3 screws.NoteBe sure to take static electricitiy countermeasures beferdisconnecting the flexible cable.(Refer to page6/2-3 Stat-ic Electricity Countermeasures.)2. Disconnect the 2 flexible cables.2-7 Disassembling the Stepping Motor Unit1. Disconnect the flexible cable.2. Remove the 2 s

26、crews.NoteTake care when handling the flexible cable because itcan be broken by excessive force.2-8 Disassembling the Optical Pickup Unit1. Remove the screw.2. Release the tab, then remove spring holder 1.NoteBe sure not to lose the spring.3. Remove the guide shaft.NoteBe sure to adjust the optical

27、pickup tilt after replacing theoptical pickup.(Refer to page9/2-13 Opitcal Pickup Tilt Adjustment.)DV-4038DISASSEMBLY FOR REPAIR2-9 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

28、the new optical pickup. After installation, use screw lock to lock the screw in posi-tion. When reassembling, use screw lock to lock the screw inposition after attaching it.2-11 Assembling the Optical Pickup1. Install the optical pickup.NoteTake care not ot attach the tilt spring and guide shaft int

29、he wrong order.2-10 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 the opticalpickup. Before replacing the optical pickup, remove thesub-sahf

30、t preload spring for use with the new opticalpickup. After installation, use screw lock to lock the screw in posi-tion.2. Insert the pickup FPC into connector FP5201 on the mod-ule C.B.A.DV-4039DISASSEMBLY FOR REPAIR2-13 Optical Pickup Tilt Adjustment3. Remove the solder from the pickup FPCs soldere

31、d short-circuit.4. Adjust the optical pickup tilt after removing the solder.(Refer to page 9/2-13 Optical Pickup Tilt Adjustment.)2-12 Disassembling the Spindle Motor Unit1. Remove the three screws.NoteBe sure to adjust the optical pickup tilt after replacing thespindle motor unit.DV-40310DISASSEMBL

32、Y FOR REPAIRNotes Adjustment is generally unnecessary after replacing otherparts of the traverse unit. However, adjust if there is anoticeable degradation in picture quality. Optical adjustments cannot be made inside the opticalpickup. Adjustment is generally unnecessary after replacing thetraverse

33、unit.DV-403DISASSEMBLY FOR REPAIR112-14 Disassembling the Intermediate Chassis1. Push the stopper downward, then rotate it until it contactsthe Vertical cam.2. Release the 2 tabs.2-16 Disassembling the Pulley Gear and Decelera-tion Gear1. Remove the screw.2. Remove the pulley gear.3. Remove the belt

34、.4. Remove the deceleration gear.2-17 Disassembling the Mechanism LoadingC.B.A.1. Remove the 2 screws.2. Remove the 2 screws.3. Release the three tabs.2-15 Disassembling the Vertical cam and Drivegear1. Rotate the Vertical cam until it reaches the contact posi-tion.2. Lift the Vertical cam straight

35、upward to pull it out.3. Remove the Drive gear.OVERAL BLOCK DIAGRAMDV-40312DV-403SERVO BLOCK DIAGRAM13VIDEO BLOCK DIAGRAMDV-40314DV-403AUDIO BLOCK DIAGRAM15CIRCUIT DESCRIPTIONDV-403161. Optical Pickup Self-Diagnosis and Replacement ProcedureThe optical pickup self-diagnosis function and tilt adjustm

36、ent check function have been newly added to this player. Whenrepairing, use the following procedure for effective Self-diagnosis and tilt adjustment. Be sure to use the self-diagnosis function before replacing the optical pickup when NO DISC is displayed. As a guideline, youshould replace the optica

37、l pickup when the value of the laser drive current is more than 55.NotePress the power button to turn on the power, and check the value before the unit warms up (within three minutes).9/2-135 button on the55Press the button on the remote controlunit while pressing the PAUSE andOPEN/CLOSEpage 17/4-2,

38、 HandlingPlayerRemote controlApplicationNotebuttonsunit buttons0Displaying the UHF display F_ _ _Jitter check,Tilt adjustment*Jitter value is three digit.Three digit of right number XXX is not related to jitter value.XXX.Occurence number of internal read error which is inclement every time error hap

39、pens. But this is not always reflected to picture/sound noise.Refer to page16/2-2 Self-Diagnosis Function (UHFDisplay).5Refer to page 9/2-13Optical Pickup TiltAdjustment.PAUSE6Checking the region numbers and broadcast system+7Checking the program versionCheck the IC6302OPEN/CLOSEFLASH ROM program.9L

40、ighting Confirmation Fanction of Display Tube5Checking the laser drive currentRefer to page16/1Optical PickupSelf-Diagnosis andReplacement Procedure.PAUSEWriting the laser drive current value after replacing Procedurethe optical pickup (do not use for anything other than optical pickup replacement)P

41、AUSEInitializing the DVD playerRefer to page17/4-1 4(restoring factory preset settings)Initializing the DVD PlayerOPEN/CLOSE*Use when replaceing a microprocessor, microprocessor peripheral parts, or C.B.A.2. Self-Diagnosis Function and Service Modes2-1 Service Mode TableThe service modes can be acti

42、vated by pressing various button combinations on the player and remote control unit.2-2 Self-Diagnosis Function (UHF Display)This unit incorporates a convenient self-diagnosis function for use in troubleshooting.2-3 Self-Diagnosis Display FunctionDisplay methodDisplayDiagnosisCheckpointsService numb

43、ers Check the discFocus errorIC2001,IC2511,IC5201,pickupdisplayed H01Tray loading errorIC2001, IC2511, loading motorduring useH02Spindle servo errorSpindle motor, IC2501, IC2001H03Traverse errorStepping motor, IC2511, IC2001H04Tracking servo errorIC2001, IC2501, IC5201, pickup, discH05Seek errorStep

44、ping motor, IC2511, IC2001H06Power supply errorIC1021, IC1121, IC1151, IC6001F0*Disc format errorF1*Disc code errorF2*Decoder LSI errorF3*SDRAM errorF4*IIC BUS errorF5*DSCF6*ECC errorF7*Microprocessor errorF8*Microprocessor errorPress the 0 buttonon the remote controlunit while pressingthe PAUSE and

45、OPEN/CLOSE button on the player.If this type of error occurs, refer topage17/2-4 Examples of Repairs UsingError Codes.Check the discJIT XXXJITTER VALUEDV-403CIRCUIT DESCRIPTION17Error displayMalfunction exampleF0*Disc, IC7001F103Disc, IC7001F4FFIC6001F500Optical pickup, IC2001, IC5201, IC2511, IC250

46、1F501IC2001, IC6201F502IC2501, IC2511, IC2001, IC5202F504IC5201, IC2001F505Disc, IC2501, IC2511, IC5201, IC2001F506Disc, Optical pickup, IC2001F600Disc, IC7001, IC5201, IC2001F601Disc, IC7001F602Disc, IC5201, IC2001F603Disc, IC5201, IC2001F610IC7001F611IC7001, IC5201, IC2001F612IC7001, IC15201, IC20

47、01F620Laser drive circuitF621Laser drive circuitF700IC6201F701IC6201F702IC6201F880IC6201F890IC6201F891IC6201F8A0IC6201F893IC6302F894IC63032-4 Examples of Repairs Using Error CodesRefer to this section when carrying out repairs.2-5 Sales Demonstration Lock FunctionThis function prevents discs from be

48、ing lost when the unit is used for sales demonstrations, by disabling the disc eject function.LOCKED is displayed on the unit, and ordinary operation is disabled.2-5-1 Setting MethodThe sales demonstration lock function is set by simultaneously pressing the POWER button of DVD Player on the remoteco

49、ntrol unit and the STOP button on the main unit. (LOCKED is displayed when the lock function is engaged.)2-5-2 Release MethodThe function can be released using the same procedure as for setting. If the remote control unit is not at hand, the function canbe released by using the same method as for pl

50、ayer initialization (pressing the PAUSE, 4 and OPEN/CLOSE buttonssimultaneously).3. Service Tools and Equipment3-1 Service Tools and Equipment TableApplicationNameNumberGeneralDVD disc (Include the color bar 75%)Tilt adjustmentHex wrench (1.27mm)InspectionExtension cables (power supply C.B.A. to mot