Kenwood-DVF3030-cd-sm 维修电路原理图.pdf

70%In compliance with Federal Regulations, following are repro-duction of labels on, or inside the product relating to laserproduct safety.KENWOOD-Crop. certifies this equipment conforms to DHHSRegulations No.21 CFR 1040. 10, Chapter 1, subchapter J.DANGER : Laser radiation when open and interlock defeated. 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-diagnosis. DIGITAL OUTPUT(PCM/BIT STREAM)OPTICALAUDIO OUTPUTSUB WOOFERVIDEO OUTPUTS-VIDEOAC INLRAVDVD VCD CD PLAYERDVF-3030SERVICE MANUAL 2000-6/B51-5645-00 (K/K) 1405Holder P(J19-6058-08)Front panel *(A60-)Tray top *(A29-)Top cover *(A01-)Legx4(J02-1468-08)Y/C connector(E40-8534-08)Connector (21P)(E40-8598-08)AC inlet *(E40-)Pin jack(E63-1170-08)* Refer to parts list on page 61. RadioFans.CN 收音机爱 好者资料库(A70-1444-08)Battery cover (A09-1193-08)(E30-2946-08): E(E30-2977-08): X(E30-2938-08)(B19-1615-08)Remote control unit . . . . . . . . . 1for remote control unit size AABatteries. . . . . . . . . . . . . . . . . . . . 2AC cord . . . . . . . . . . . . . . . . . . . . . 1Video/audio cable. . . . . . . . . . . . 1Digital cord. . . . . . . . . . . . . . . . . . . 1DVF-30302CONTENTS / ACCESSORIESCONTENTS / ACCESSORIES . 2DISASSEMBLY FOR REPAIR.3BLOCK DIAGRAM .12CIRCUIT DESCRIPTION.16ADJUSTMENT.18VOLTAGE CHART.19WIRING DIAGRAM.23PARTS DESCRIPTIONS .24PC BOARD . 25SCHEMATIC DIAGRAM . 31EXPLODED VIEW .58PARTS LIST.61SPECIFICATIONS .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 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DVF-30303DISASSEMBLY FOR REPAIRExtensioncable(C)Extension cable(B)x2Extension cable(A)1-1 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 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 Disassembling 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.Module C.B.A. *E type hasSCART pcb.DVF-30304DISASSEMBLY 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 cable (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. (Refer 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.NoteThere 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)DVF-30305DISASSEMBLY 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 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 extremely 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 diodeto 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 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 connecting 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-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 player whenever you replace aC.B.A. (Refer to page17/4-1, Initializing the DVD player.)DVF-30306DISASSEMBLY 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 countermeasures 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 traverse 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 diodeSolder the land in the flexible cable of the optical pickup.Notes Be sure to do this before 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 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).)DVF-30307DISASSEMBLY FOR REPAIR2-6 Disassembling the Traverse Unit1. Remove the 3 screws.NoteBe sure to take static electricity 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 screws.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 pickup tilt after replacing theoptical pickup.(Refer to page9/2-13 Optical Pickup Tilt Adjustment.)DVF-30308DISASSEMBLY 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 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 inthe 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-shaft 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.DVF-30309DISASSEMBLY FOR REPAIR2-13 Optical Pickup Tilt Adjustment3. Remove the solder from the pickup FPCs soldered 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.DVF-303010DISASSEMBLY 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 unit.D11DVF-3030DISASSEMBLY FOR REPAIR2-14 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 andDeceleration Gear1. Remove the screw.2. Remove the pulley gear.3. Remove the belt.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 contactposition.2. Lift the Vertical cam straight upward to pull it out.3. Remove the Drive gear.?OVERALL BLOCK DIAGRAMDVF-3030120?DDVF-3030SERVO BLOCK DIAGRAM13?VIDEO BLOCK DIAGRAMDVF-3030140?DVF-3030AUDIO BLOCK DIAGRAM15?1. Optical Pickup Self-Diagnosis and Replacement ProcedureThe optical pickup self-diagnosis function and tilt adjustment 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 optical 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, 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 happens. 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.9Lighting 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)PAUSEInitializing 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 activated 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 numbers 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 errorStepping 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 andOPEN/CLOSE button on the player.If this type of error occurs, refer topage17/2-4 Examples of Repairs UsingError Codes.Check the discJIT XXXJITTER VALUECIRCUIT DESCRIPTIONDVF-303016?Error displayMalfunction exampleF0*Disc, IC7001F103Disc, IC7001F4FFIC6001F500Optical pickup, IC2001, IC5201, IC2511, IC2501F501IC2001, IC6201F502IC2501, IC2511, IC2001, IC5202F504IC5201, IC2001F505Disc, IC2501, IC2511, IC5201, IC2001F506Disc, Optical pickup, IC2001F600Disc, IC7001, IC5201, IC2001F601Disc, IC7001F602Disc, IC5201, IC2001F603Disc, IC5201, IC2001F610IC7001F611IC7001, IC5201, IC2001F612IC7001, IC15201, IC2001F620Laser 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 being 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 remotecontrol 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 player 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)I