Kenwood-DVF5020-cd-sm 电路图维修手册.pdf

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1、DVD VCD CD PLAYER DVF-5020 SERVICE MANUAL 1999-9/B51-5580-00 (K/K) 1355 70% In compliance with Federal Regulations, following are repro- ductions of labels on, or inside the product relating to laser product safety. KENWOOD-Crop. certifies this equipment conforms to DHHS Regulations No. 21 DFR 1040.

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

3、for self-diagnosis and tilt adjust- ment. AC IN AV1 AV2 S VIDEO OUT VIDEO OUT AUDIO OUT L R DIGITAL AUDIO OUT OPTICAL CENTER FRONT SURROUND SUB WOOFERSURROUND L R FRONT R R/ L (PCM/BIT STREAM) COAXIAL STANDBY VIRTUAL SURROUND OPEN/CLOSE Tray top (A29-1093-08) Front panel (A60-1820-08) Power button (

4、K27-2399-08) Front cover (B10-3573-08) Leg (J02-1468-08) 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 t

5、he Europe markets. In other market, please refer to service manual (B51-5583-00). DVF-5020(k) COVER1,1p( 99.11.1 4:53 PM yW 1 RadioFans.CN 收音机爱好者资料库 DVF-5020 2 CONTENTS / ACCESSORIES CONTENTS / ACCESSORIES . 2 DISASSEMBLY FOR REPAIR.3 BLOCK DIAGRAM .14 CIRCUIT DESCRIPTION.18 ADJUSTMENT.21 ABBREVIAT

6、ION.22 VOLTAGE CHART.24 WIRING DIAGRAM.33 PC BOARD . 34 SCHEMATIC DIAGRAM . 39 EXPLODED VIEW .64 PARTS LIST.67 SPECIFICATIONS .Back cover Contents (A70-1353-08)(E30-2937-08) (E30-2938-08)(E30-2365-05) Remote control unit . . . . . . . . . 1 for remote control unit size AA Batteries. . . . . . . . .

7、. . . . . . . . . . . 2AC cord. . . . . . . . . . . . . . . . . . . . . 1 Video/audio cable. . . . . . . . . . . . 1Digital cord. . . . . . . . . . . . . . . . . . . 1 (E30-2945-08) Audio cable. . . . . . . . . . . . . . . . . . . 2 Accessories Note: There is different part in this manual as compare

8、d with a usual one because we use OEM factorys data. DVF-5020(k) COVER1,1p( 99.11.1 4:53 PM yW 2 RadioFans.CN 收音机爱好者资料库 DVF-5020 3 DISASSEMBLY FOR REPAIR 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. Releas

9、e 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 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 Se

10、rvice Positions Note To inspect the loading base unit, position the left side upward (as viewed from the front). 1-3 Disassembling 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 tr

11、ay. Extension cable (A) Extension cable (B)x2 DVF-5020(k) COVER1,1p( 99.11.1 4:53 PM yW 3 RadioFans.CN 收音机爱好者资料库 DVF-5020 4 DISASSEMBLY FOR REPAIR 1-6 Checking the Module C.B.A. 1. Remove the 2 screws. 2. Connect the module C.B.A. to the mother C.B.A. with the extension cables for inspection. Exten

12、sion cable (B)x2 Mother C.B.A. Module C.B.A. PP24201-PS4201 PP23201-PS3201 Note Be sure to initialize the player whenever you replace a C.B.A. (Refer to page21/4-1 Initializing the DVD Player.) 1-7 Disassembling the Rear Panel, 1. Remove all of the screws connected to the rear panel. (The number of

13、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 inspection. Exten

14、sion 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 4:53 PM yW 4 DVF-5020 5 DISASSEMBLY FOR REPAIR 1-9 Checking the Mother C.B.A. 1. Remove the 5 screws. 2. Release the 2

15、 tabs. 2. To preserve the quality of the optical 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 page9/2-12 Assembling

16、the Optical Pickup.) 3. Testers cannot be used 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 resisto

17、r for laser power adjustment. Do not turn it. 2-2 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)x

18、2 Module C.B.A. Mother C.B.A. PS3201-PP23201 PS4201-PP24201 Note Be sure to initialize the player whenever you replace a C.B.A. (Refer to page21/4-1, Initializing the DVD player.) 2. Assembling and Disassembling the Optical Pickup (Mechanical Parts) The optical pickup can be damaged by static electr

19、icity from your body. Be sure to take static electricity countermeasures when working around the optical pickup. 2-1 Handling the Optical Pickup The optical pickup can be damaged by static electricity from your body. Be sure to take static electricity counter- measures when working around the optica

20、l pickup. 1. The optical pickup is an extremely high-precision mecha- nism. Do not subject it to strong impact. Extension cable(B) Extension cable(B) DVF-5020(k) COVER1,1p( 99.11.1 4:53 PM yW 5 DVF-5020 6 DISASSEMBLY FOR REPAIR 2-3 Lubricating the Loading Base Unit When replacing parts, lubricate th

21、e parts maked “xxx” in the diagram Part numberService Tool Grease410-0013-05Grease EM-30LG DVF-5020(k) COVER1,1p( 99.11.1 4:53 PM yW 6 DVF-5020 7 DISASSEMBLY FOR REPAIR 2-4 Static Electricity Countermeasures The laser diode inside the traverse unit (optical pickup) can be damaged by static electrici

22、ty from your body. Be sure to take static electricity countermeasures when working around the optical pickup. 2-4-1 Static Electricity 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 m

23、aterial (sheet) or steel sheet on the surface where the traverse unit (optical pickup) is to be placed, then ground the sheet. 2-5 Disassembling the Clamp Base Unit Remove the 2 screws. 2-6 Disassembling the Clamper Weight, Clamper Yoke, Magnet and Clamper 1. Release the tab, and pull out the clampe

24、r. 2. Release the 3 tabs on the clamper. 2-4-2 Short-circuit the laser diode Solder the land in the flexible cable of the optical pickup. 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 an

25、d unshort-circuit laser diode. (Recommended soldering iron: Hakko with ESD counter- measure) After you have finished repairing the 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 (Mecha

26、nical Parts).) DVF-5020(k) COVER1,1p( 99.11.1 4:54 PM yW 7 DVF-5020 8 DISASSEMBLY FOR REPAIR 2-7 Disassembling the Traverse Unit 1. Remove the 3 screws. Note Be sure to take static electricitiy countermeasures befer disconnecting the flexible cable.(Refer to page7/2-4 Stat- ic Electricity Countermea

27、sures.) 2. Disconnect the 2 flexible cables. 2-8 Disassembling the Stepping Motor Unit 1. Disconnect the flexible cable. 2. Remove the 2 screws. Note Take care when handling the flexible cable because it can be broken by excessive force. 2-9 Disassembling the Optical Pickup Unit 1. Remove the hook o

28、f the FPC holder, then remove the FPC holder itself. 2. Remove the screw. 3. Release the tab, then remove spring holder 1. Note Be sure not to lose the spring. 4. Remove the guide shaft. Note Be sure to adjust the optical pickup tilt after replacing the optical pickup. (Refer to page10/2-14 Opitcal

29、Pickup Tilt Adjustment.) DVF-5020(k) COVER1,1p( 99.11.1 4:54 PM yW 8 DVF-5020 9 DISASSEMBLY FOR REPAIR 2-10 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 pick

30、up. 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. 2-12 Assembling the Optical Pickup 1. Install the optical pickup. Note Take care not ot attach the tilt spring and guide shaft in the wrong orde

31、r. 2. Fit the protruding part of the pickup FPC into the convex- part of the FPC holder to install it. 2-11 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 sprin

32、g is not part of the optical pickup. Before replacing the optical pickup, remove the sub-sahft preload spring for use with the new optical pickup. After installation, use screw lock to lock the screw in posi- tion. DVF-5020(k) COVER1,1p( 99.11.1 4:54 PM yW 9 DVF-5020 10 DISASSEMBLY FOR REPAIR 3. Ins

33、ert the pickup FPC into connector FP5201 on the mod- ule C.B.A. 2-14 Optical Pickup Tilt Adjustment 4. 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 Disassemblin

34、g the Spindle Motor Unit 1. Remove the three screws. Note Be sure to adjust the optical pickup tilt after replacing the spindle motor unit. DVF-5020(k) COVER1,1p( 99.11.1 4:54 PM yW 10 DVF-5020 11 DISASSEMBLY FOR REPAIR Notes Adjustment is generally unnecessary after replacing other parts of the tra

35、verse 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 replacing the traverse unit. Adjustment is generally unnecessary after replacing the traverse unit. DVF-5020(k)

36、 COVER1,1p( 99.11.1 4:54 PM yW 11 DVF-5020 12 DISASSEMBLY FOR REPAIR 2-15 Disassembling the Intermediate Chassis 1. Push the stopper downward, then rotate it until it contacts the Vertical cam. 2. Release the 2 tabs. 2-17 Disassembling the Pulley Gear and Decelera- tion Gear 1. Remove the screw. 2.

37、Remove the pulley gear. 3. Remove the belt. 4. Remove the deceleration gear. 2-18 Disassembling the Mechanism Loading C.B.A. 1. Remove the 2 screws. 2. Remove the 2 screws. 3. Release the three tabs. 2-16 Disassembling the Vertical cam and Drive gear 1. Rotate the Vertical cam until it reaches the c

38、ontact posi- tion. 2. Lift the Vertical cam straight upward to pull it out. 3. Remove the Drive gear. DVF-5020(k) COVER1,1p( 99.11.1 4:54 PM yW 12 DVF-5020 13 OVERALL BLOCK DIAGRAM IC4231 CNT SW CONVERTER D/A AUDIO 27MHz AUDIO DIGITAL OUT IC3201 MOTHER C.B.A. IC3071 IC3061 IC6001 IC2511 IC2501 MECHA

39、NISM UNIT MODULE C.B.A. CR(R) CB(B) Y(G) S-VIDEO OUT VIDEO OUT IC3531 IC4221 IC4211 IC4201 SL SR FL FR MIXR MIXL CONVERTER D/A VIDEO DRIVER VIDEO CONVERTER D/A AUDIO CONVERTER D/A AUDIO CONVERTER D/A AUDIO IC3001IC7001IC2001IC5202 (AV DEC) DECODER AV SRAM 16BIT (ODC) CONTROLLER DISC OPTICAL SRAM 16B

40、IT COIL TRACKING COIL FOCUS MOTOR STEPPING CPU SUB KEY REMOCON LED OSD FL (DSC) CONTROLLER SERVO DIGITAL IC6302 IC6201 CPU MAIN DRAM 4M 16.9MHz DRIVE MOTOR 4ch MOTOR LOADING DRIVE MOTOR SPINDLE MOTOR SPINDLE (FEP) PROCESSOR END FRONT UNIT PICK UP OPTICAL DVF-5020(k) COVER1,1p( 99.11.1 4:54 PM yW 13

41、14 DVF-5020 SERVO BLOCK DIAGRAM (0.5sec./DIV.) CLOSE 2.5Vp-p IC2501-25(UP),IC2501-27(DOWN) 5.0Vp-p(20usec./div.) IC2501-24 7.2Vp-p(20usec./div.) IC2511-11,12,13,14 (0.5sec./DIV.) OPEN 2.5Vp-p IC2501-25(UP),IC2501-27(DOWN) RF SIGNALSPINDLE MOTOR DRIVE SIGNALSTEPPING MOTOR DRIVE SIGNALTRACKING ERROR S

42、IGNALFOCUS ERROR SIGNAL BRK FIN RIN SS FGC FG EC ECR OPIN2- OPIN1- OPIN3- OPIN4- TRAY CLOSE TRAY OPEN BRK TRAY SET2 TRAY SET1 SS FGC FG EC ECR TRV-SW FOCUS DRIVE TRAKING DRIVE TRSDRV-B TRSDRV-A X TRON OFTR BDO JIT OUT LDONA LDONB FBAL FE TBAL TE RDCKP RDCKN RDTP RDTN VIN4 VIN3 VIN2 VIN1 VIN5 VIN6 ST

43、NBY STD1 SCK SEN DAT3 DAT2 DAT1 DAT0 SBI1 SBO1 SBT1 CPUIRQ CPCEN CPSEN OUT2 OUT1 A3 A2 A1 H1+ H1- H2+ H2- H3+ H3- VO2- VO2+ VO1- VO1+ VO4+ VO4- VO3+ VO3- Q C D OPTICAL PICK UP UNIT PHOTO DETECTOR B3B4 B2B1 A3 A2 A4 A1 LASER DIODE AMP HEAD Q5201 LD DRIVE 4 3 IC6303 (EEPROM) AMP 112 113 114 115 71 76

44、50 60 52 72 70 55 2 6 5 IC6201 (CPU) IC7001 (ODC) INTERFACE BALANCE FOCUS BALANCE TRACKING 22 21 20 19 97 96 95 94 92 91 2 3 2 1 9 23 66 65 64 12 13 28 50 49 48 47 (FEP) IC5202 61 63 62 60 38 37 36 35 34 33 128 107 44 81 98 93 20 91 40 41 42 43 1 7 8 13 12 16 14 111 120 121 11 103 102 105 104 23 26

45、9 2 3 4 5 6 7 16 11 10 15 12 19 18 25 27 23 26 28 11 12 13 14 15 16 17 18 6 3 (DSC) IC2001 QR2502 5 4 1 3 AMP QR2503 QR2501 AMP 5 4 1 3 AMP (MOTOR DRIVE) (SPINDLE MOTOR DRIVE) IC2501 IC2511 M2601 LOAD M- LOAD M+ MOTOR LOADING S2601 TRAY OPEN TRAY CLOSE M3 M2 M1 H1- HALL1 H1+ H2- H2+ HALL2 H3+ H3- TR

46、V-SW HALL3 TRAVERSE SWITCH ACT T- ACT T+ ACT F- ACT F+ STEPPING MOTOR UNIT STEPPING MOTOR LOADING MOTOR UNIT SPINDLE MOTOR UNIT OPTICAL PICK UP UNIT ACTUATOR COIL TRACKING COIL FOCUS DVF-5020(k) COVER1,1p( 99.11.1 4:54 PM yW 14 DVF-5020 15 VIDEO BLOCK DIAGRAM VIDEO SIGNAL MODEL EXCEPT EUROPE Q3503 A

47、MP QR6311 1.2Vp-p(20usec./div) PS3801-19 PLAY 1.2Vp-p(20usec./div) PS3801-18 PLAY 1.0Vp-p(20usec./div) PS3801-17 PLAY IC3813 H L H L H L H L L H H L H L H H L L SCART C.B.A. V-OUT GREEN-I/O V-OUT BLUE-I/O7 11 15 19 19 RED-I/O RGBH IC3831 IC3831 IC3841 IC3841 IC3841 J3871- IC3821 J3871- J3871- J3881- J3871- V C Y R G B H RGB J3881- IC3812 J3871- YC J3881- YC IC3811 RGB IC3822 IC3822 YC IC3822 IC3821 J3881YC J3881 IC3821 20 H H 15 H 20 H 11 7 H 1.2Vp-p(20usec./div.) IC3201-24 2.2Vp-p(20usec./div.) IC3531-19 2.2Vp-p(20usec./div.) IC353