Kenwood-DV403-cd-sm 电路图 维修手册.pdf

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1、DVD VCD CD PLAYER DV-403 SERVICE MANUAL 2000-5/B51-5621-00 (K/K) 1380 70% In compliance with Federal Regulations, following are repro- duction of labels on, or inside the porduct relating to laser product safety. KENWOOD-Crop. certifies this equipment conforms to DHHS Regulations No.21 CFR 1040. 10,

2、 Chapter 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 on rear panel, PCBs, Chassis and some others. NOTE : Please use the remote controller f

3、or self-diagnosis. DIGITAL OUTPUT (PCM/BIT STREAM) OPTICAL AUDIO OUTPUT SUB WOOFER VIDEO OUTPUT COMPONENT VIDEO OUTPUT Cr CbY S-VIDEO AC IN L R Holder 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 modul

4、e (W02-2736-08) Y/C connector (E40-8534-08) 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 . . . . . . . . . 1 for remote control unit size AA Batteries. . . . . . . . . . .

5、. . . . . . . . . 2AC cord . . . . . . . . . . . . . . . . . . . . . 1 Video/audio cable. . . . . . . . . . . . 1Digital cord. . . . . . . . . . . . . . . . . . . 1 DV-403 2 CONTENTS / ACCESSORIES CONTENTS / ACCESSORIES . 2 DISASSEMBLY FOR REPAIR.3 BLOCK DIAGRAM .12 CIRCUIT DESCRIPTION.16 ADJUSTMENT

6、.18 VOLTAGE CHART.19 WIRING DIAGRAM.23 PC BOARD . 24 SCHEMATIC DIAGRAM . 29 EXPLODED VIEW .54 PARTS LIST.57 SPECIFICATIONS .Back cover Contents Accessories Note: There is different part in this manual as compared with a usual one because we use OEM factorys data. On Circuit description, Lubrication

7、and Abbreviation of Logo, please refer to DV-303 service 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 name RadioFans.CN 收音机爱 好者资料库 DV-403 3 DISASSEMBLY FOR REPAIR Extension cable(C) Extension cable

8、(B)x2 Extension cable(A) 1-1 Casing Parts and C.B.A. Positions 1. Assembling and Disassembling the Casing and Checking C.B.A.s 1-4 Disassembling the Front Panel 1. 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 cable

9、s. 1-5 Disassembling the Loading Base Unit 1. Remove the 4 screws. 2. Pull out the loading base unit vertically. Note There is a danger of damaging the connectors. 1-2 Service Positions Note To inspect the loading base unit, position the left side upward (as viewed from the front). 1-3 Disassembling

10、 the Tray 1. 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 out the tray. RadioFans.CN 收音机爱 好者资料库 DV-403 4 DISASSEMBLY FOR REPAIR Extension cable(C) Extension cable(B) Extension cable(B) 1-6 Checking

11、the Module C.B.A. 1. Remove the screws. 2. Connect the module C.B.A. to the mother C.B.A. with the extension cables for inspection. Extension cable (B)x2 Mother C.B.A. Module C.B.A. PP4201-PS4201 PP3201-PS3201 3. Connect the mechanism loading C.B.A. to the mother C.B.A. with the extension cable: for

12、 inspection. Extension cable(C) Mother C.B.A. Mechanism Loading C.B.A. PP2591-PS2591 Note Be sure to initialize the player whenever you replace a C.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

13、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. Note There 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 inspect

14、ion. 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-403 5 DISASSEMBLY FOR REPAIR Extension cable(C) Extension cable(B) Extension cable(B) 1-9 Checking the Mother C.B.A. 1. Remove the 4 scr

15、ews. 2. Release the 2 tabs. 2. Assembling and Disassembling the Optical Pickup (Mechanical Parts) The optical pickup can be damaged by static electricity from your body. Be sure to take static electricity countermeasures when working around the optical pickup. 2-1 Handling the Optical Pickup The opt

16、ical pickup can be damaged by static electricity from 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 optica

17、l pickup replacement parts during transport and installation, the terminals of the laser diode are short-circuited. After replacing the parts, use the proper procedure to return the laser diode to its original condition. (Refer to page8/2-11 Assembling the Optical Pickup.) 3. Testers cannot be used

18、to check the laser diode of the optical pickup. The power supply inside the tester can easily damage the laser diode. 4. Take care when handling the flexible cable because excessive force can cause it to break. 5. You cannot adjust the semifixed resistor for laser power adjustment. Do not turn it. 2

19、-2 Disassembly Procedure Use 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)x2 Module C.B.A. Mother C.B.A. PS3201-PP3201 PS4

20、201-PP4201 4. 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-PP4201 Note Be sure to initialize the player whenever you replace a C.B.A. (Refer to page17/4-1, Initializing the DVD pla

21、yer.) DV-403 6 DISASSEMBLY FOR REPAIR 2-3 Static Electricity Countermeasures The laser diode inside the traverse unit (optical pickup) can be damaged by static electricity from your body. Be sure to take static electricity countermeasures when working around the optical pickup. 2-3-1 Static Electric

22、ity Countermeasure Methods 1. Ground yourself Use an anti-static wrist strap to discharge static electrici- ty from your body. 2. Ground the workbench Lay a conductive material (sheet) or steel sheet on the surface where the traverse unit (optical pickup) is to be placed, then ground the sheet. 2-4

23、Disassembling the Clamp Base Unit Remove the 2 screws. 2-5 Disassembling the Clamper Weight, Clamper Yoke, Magnet and Clamper 1. Release the tab, and pull out the clamper. 2. Release the 3 tabs on the clamper. 2-3-2 Short-circuit the laser diode Solder the land in the flexible cable of the optical p

24、ickup. Notes Be sure to do this befer disconnecting the flexible cable of the optical pickup from the module C.B.A. Use an anti-static soldering iron to short-circuit and unshort-circuit laser diode. (Recommended soldering iron: Hakko with ESD counter- measure) After you have finished repairing the

25、laser diode, follow the correct procedure to remove the solder from the short-circuit location. (Refer to page5/2. Assembling and Disassembling the Optical Pickup (Mechanical Parts).) DV-403 7 DISASSEMBLY FOR REPAIR 2-6 Disassembling the Traverse Unit 1. Remove the 3 screws. Note Be sure to take sta

26、tic electricitiy countermeasures befer disconnecting the flexible cable.(Refer to page6/2-3 Stat- ic Electricity Countermeasures.) 2. Disconnect the 2 flexible cables. 2-7 Disassembling the Stepping Motor Unit 1. Disconnect the flexible cable. 2. Remove the 2 screws. Note Take care when handling the

27、 flexible cable because it can be broken by excessive force. 2-8 Disassembling the Optical Pickup Unit 1. Remove the screw. 2. Release the tab, then remove spring holder 1. Note Be sure not to lose the spring. 3. Remove the guide shaft. Note Be sure to adjust the optical pickup tilt after replacing

28、the optical pickup. (Refer to page9/2-13 Opitcal Pickup Tilt Adjustment.) DV-403 8 DISASSEMBLY FOR REPAIR 2-9 Disassembling the Nut Unit 1. Remove the screw. Notes The nut unit is not part of the optical pickup. Before replacing the optical pickup, remove the nut unit for use with the new optical pi

29、ckup. After installation, use screw lock to lock the screw in posi- tion. When reassembling, use screw lock to lock the screw in position after attaching it. 2-11 Assembling the Optical Pickup 1. Install the optical pickup. Note Take care not ot attach the tilt spring and guide shaft in the wrong or

30、der. 2-10 Disassembling the Sub-Shaft Preload Spring 1. Remove the screw. Notes Handle the sub-shaft preload spring carefully because the shape of the tip is easily deformed. The sub-shaft preload spring is not part of the optical pickup. Before replacing the optical pickup, remove the sub-sahft pre

31、load spring for use with the new optical pickup. 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-403 9 DISASSEMBLY FOR REPAIR 2-13 Optical Pickup Tilt Adjustment3. Remove the solder from the pickup FPCs sold

32、ered 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 Unit 1. Remove the three screws. Note Be sure to adjust the optical pickup tilt after replacing the spindle motor unit. DV-403

33、 10 DISASSEMBLY FOR REPAIR Notes Adjustment is generally unnecessary after replacing other parts of the traverse unit. However, adjust if there is a noticeable degradation in picture quality. Optical adjustments cannot be made inside the optical pickup. Adjustment is generally unnecessary after repl

34、acing the traverse unit. DV-403 DISASSEMBLY FOR REPAIR 11 2-14 Disassembling the Intermediate Chassis 1. Push the stopper downward, then rotate it until it contacts the Vertical cam. 2. Release the 2 tabs. 2-16 Disassembling the Pulley Gear and Decelera- tion Gear 1. Remove the screw. 2. Remove the

35、pulley gear. 3. Remove the belt. 4. Remove the deceleration gear. 2-17 Disassembling the Mechanism Loading C.B.A. 1. Remove the 2 screws. 2. Remove the 2 screws. 3. Release the three tabs. 2-15 Disassembling the Vertical cam and Drive gear 1. Rotate the Vertical cam until it reaches the contact posi

36、- tion. 2. Lift the Vertical cam straight upward to pull it out. 3. Remove the Drive gear. OVERAL BLOCK DIAGRAM DV-403 12 DV-403 SERVO BLOCK DIAGRAM 13 VIDEO BLOCK DIAGRAM DV-403 14 DV-403 AUDIO BLOCK DIAGRAM 15 CIRCUIT DESCRIPTION DV-403 16 1. Optical Pickup Self-Diagnosis and Replacement Procedure

37、 The optical pickup self-diagnosis function and tilt adjustment check function have been newly added to this player. When repairing, 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 DI

38、SC is displayed. As a guideline, you should replace the optical pickup when the value of the laser drive current is more than 55. Note Press the power button to turn on the power, and check the value before the unit warms up (within three minutes). 9/2-13 5 button on the 5 5Press the button on the r

39、emote control unit while pressing the PAUSE and OPEN/CLOSE page 17/4-2, Handling PlayerRemote control ApplicationNote buttonsunit buttons 0Displaying 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.

40、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 (UHF Display). 5Refer to page 9/2-13 Optical Pickup Tilt Adjustment. PAUSE6Checking the region numbers and broadc

41、ast system +7Checking the program versionCheck the IC6302 OPEN/CLOSEFLASH ROM program. 9Lighting Confirmation Fanction of Display Tube 5Checking the laser drive currentRefer to page16/1 Optical Pickup Self-Diagnosis and Replacement Procedure. PAUSEWriting the laser drive current value after replacin

42、g Procedure the 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 Player OPEN/CLOSE*Use when replaceing a microprocessor, microprocessor peripheral parts, or C.B.

43、A. 2. Self-Diagnosis Function and Service Modes 2-1 Service Mode Table The 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 tr

44、oubleshooting. 2-3 Self-Diagnosis Display Function Display methodDisplayDiagnosisCheckpoints Service numbers Check the discFocus errorIC2001,IC2511,IC5201,pickup displayed H01Tray loading errorIC2001, IC2511, loading motor during useH02Spindle servo errorSpindle motor, IC2501, IC2001 H03Traverse err

45、orStepping motor, IC2511, IC2001 H04Tracking servo errorIC2001, IC2501, IC5201, pickup, disc H05Seek errorStepping motor, IC2511, IC2001 H06Power supply errorIC1021, IC1121, IC1151, IC6001 F0*Disc format error F1*Disc code error F2*Decoder LSI error F3*SDRAM error F4*IIC BUS error F5*DSC F6*ECC erro

46、r F7*Microprocessor error F8*Microprocessor error Press the 0 button on the remote control unit while pressing the PAUSE and OPEN/CLOSE button on the player. If this type of error occurs, refer to page17/2-4 Examples of Repairs Using Error Codes. Check the disc JIT XXX JITTER VALUE DV-403 CIRCUIT DE

47、SCRIPTION 17 Error displayMalfunction example F0*Disc, IC7001 F103Disc, IC7001 F4FFIC6001 F500Optical pickup, IC2001, IC5201, IC2511, IC2501 F501IC2001, IC6201 F502IC2501, IC2511, IC2001, IC5202 F504IC5201, IC2001 F505Disc, IC2501, IC2511, IC5201, IC2001 F506Disc, Optical pickup, IC2001 F600Disc, IC7001, IC5201, IC2001 F601Disc, IC7001 F602Disc, IC5201, IC2001 F603Disc, IC5201, IC2001 F610IC7001 F611IC7001, IC5201, IC2001 F612IC7001, IC15201, IC2001 F620Laser drive circuit F621Laser drive circuit F700IC6201 F701IC6201 F702IC6201 F880IC6201 F890IC6201 F891IC620