Jvc-KDDV-5100-Service-Manual(1) 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2005 Victor Company of Japan, Limited No.MA149 2005/2 DVD/CD RECEIVER MA14920052 KD-DV5100 TABLE OF CONTENTS 1PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2SPECIF

2、IC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 4ADJUS

3、TMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、1-28 Area suffix J - Northern America RadioFans.CN 收音机爱 好者资料库 1-2 (No.MA149) SPECIFICATION Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Power Output20 W RMS 4 Channels at 4 and or = 1% THD+N Signal to Noise Ratio80 dBA (reference: 1 W into 4 ) Load Impedanc

5、e4 (4 to 8 allowance) Equalizer Control Range Frequencies60 Hz, 150 Hz, 400 Hz, 1 kHz, 2.4 kHz, 6 kHz, 15 kHz Level10 dB Audio Output LevelAnalog (2nd AUDIO OUT)6 mW (at 16 ) Digital (DIGITAL OUT: Optical)Signal wave length: 660 nm Output level: -21 dBm to -15 dBm Line-Out Level/Impedance2.5 V/20 k

6、load (full scale) Output Impedance1 k Color SystemNTSC Video Output (composite)1 Vp-p/75 Other TerminalsLINE IN, CD changer TUNER SECTION Frequency RangeFM87.5 MHz to 107.9 MHz (with channel interval set to 200 kHz) 87.5 MHz to 108.0 MHz (with channel interval set to 50 kHz) AM530 kHz to 1 710 kHz (

7、with channel interval set to 10 kHz) 531 kHz to 1 602 kHz (with channel interval set to 9 kHz) FM TunerUsable Sensitivity11.3 dBf (1.0 V/75 ) 50 dB Quieting Sensitivity16.3 dBf (1.8 V/75 ) Alternate Channel Selectivity (400 kHz) 65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation35 dB Captu

8、re Ratio1.5 dB AM TunerSensitivity20 V Selectivity35 dB DVD/CD PLAYER SECTION Signal Detection SystemNon-contact optical pickup (semiconductor laser) Number of Channels2 channels (stereo) Frequency ResponseDVD, fs=48 kHz/96 kHz16 Hz to 22 000 Hz VCD, CD, MP3, WMA16 Hz to 20 000 Hz Dynamic Range96 dB

9、 Signal-to-Noise Ratio98 dB Wow and FlutterLess than measurable limit MP3 (MPEG Audio Layer 3)Max. Bit Rate: 320 kbps WMA (Windows Media Audio)Max. Bit Rate: 192 kbps GENERAL Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding SystemNegative ground Allowable Operating Temp

10、erature0C to +40C (32F to 104F) Dimensions (W H D) Installation Size (approx.)182 mm 52 mm 158 mm (7-3/16 2-1/16 6-1/4) Panel Size (approx.)188 mm 58 mm 11 mm (7-7/16 2-5/16 7/16) Mass (approx.)1.7 kg (3.7 lbs) (excluding accessories) RadioFans.CN 收音机爱 好者资料库 (No.MA149)1-3 SECTION 1 PRECAUTIONS 1.1Sa

11、fety Precautions ! Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system. ! Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. Radi

12、oFans.CN 收音机爱 好者资料库 1-4 (No.MA149) 1.2Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs

13、. 1.2.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players. Be careful to use proper grounding in the area where repairs are being performed. (1) Ground the workbench Ground the workbench by

14、 laying conductive material (such as a conductive sheet) or an iron plate over it before placing the traverse unit (optical pickup) on it. (2) Ground yourself Use an anti-static wrist strap to release any static electricity built up in your body. (3) Handling the optical pickup In order to maintain

15、quality during transport and before installation, both sides of the laser diode on the replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition. (Refer to the text.) Do not use a tester to check the condition of the laser diode in the optical pi

16、ckup. The testers internal power source can easily destroy the laser diode. 1.3Handling the traverse unit (optical pickup) (1) Before disconnecting the flexible wire from the connector CN101 on the mechanism control board, solder the short-circuit points on the flexible wire. Caution: If you do not

17、follow this instruction, the DVD pickup may be damaged. (2) Disconnect the flexible wire from the connector CN101 on the mechanism control board. (3) Remove the solders from the short-circuit points on the flexible wire after replacing the DVD pickup. (4) Connect the flexible wire to the connector C

18、N101 on the mechanism control board. 1M (caption) Anti-static wrist strap Conductive material (conductive sheet) or iron plate Mechanism control board CN101 Flexible wire Short-circuit points (No.MA149)1-5 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE

19、 INSTRUCTIONS. 1-6 (No.MA149) SECTION 3 DISASSEMBLY 3.1Main body section 3.1.1Removing the front panel assembly (See Fig.1) Push the detach button in the lower left part of the front panel as- sembly and remove the front panel assembly. Fig.1 3.1.2Removing the bottom cover (See Fig.2) Reference: Rem

20、ove the front panel assembly as required. (1) Release the two joints a, two joints b and joint c. (2) Remove the bottom cover from the main body. Caution: Do not damage the main board when releasing the joints using a screwdriver or a similar tool. Fig.2 Front panel assembly Detach button Bottom cov

21、er b b a a c (No.MA149)1-7 3.1.3Removing the front chassis assembly (See Figs.3 and 4) Remove the front panel assembly and bottom cover. (1) From the front side of the main body, remove the two screws A attaching the front chassis assembly. (See Fig.3.) (2) From the both sides of the main body, remo

22、ve the two screws B attaching the front chassis assembly. (See Fig.4.) (3) Release the two joints d and two joints e. (See Fig.4.) Fig.3 Fig.4 3.1.4Removing the side heat sink (See Fig.5) Reference: Remove the front panel and front chassis assemblies as re- quired. From the left side of the main bod

23、y, remove the two screws C and three screws D attaching the side heat sink. Fig.5 A Front chassis assembly d d Front chassis assembly B e e B C D Side heat sink 1-8 (No.MA149) 3.1.5Removing the rear bracket (See Fig.6) Remove the bottom cover. (1) From the back side of the main body, remove the two

24、screws E, two screws E, screw F, two screws G and three screws H attaching the rear bracket. (2) Remove the LINE IN cable from the rear bracket in the di- rection of the arrow. Reference: When attaching the LINE IN cable, insert it in a slot of the rear bracket and hang it on a wire holder. When att

25、aching the screws E, attach the cable holders with them. 3.1.6Removing the main board (See Figs.6 and 7) Remove the front panel assembly, bottom cover, front chassis assembly and side heat sink. Reference: Remove the rear bracket as required. (1) From the back side of the main body, remove the three

26、 screws H attaching the main board. (See Fig.6.) (2) From the bottom side of the main body, remove the three screws J attaching the main board. (See Fig.7.) (3) Disconnect the connector CN961 on the main board from the DVD mechanism assembly and take out the main board from the main body. (See Fig.7

27、.) Fig.6 Fig.7 3.1.7Removing the DVD mechanism assembly (See Fig.8) Remove the front panel assembly, bottom cover, front chassis assembly, side heat sink and main board. (1) From the inside of the top chassis, remove the three screws K attaching the DVD mechanism assembly. (2) Take out the DVD mecha

28、nism assembly from the top chas- sis. Fig.8 Rear bracket G H E Cable holder F H H E E Cable holder Wire holder Slot LINE IN cable Rear bracket E CN961 J J Main board J K K K DVD mechanism assembly Top chassis (No.MA149)1-9 3.1.8Removing the main sub board (See Figs.9 to 11) Remove the front panel as

29、sembly, bottom cover, front chassis assembly, side heat sink, main board and DVD mechanism as- sembly. (1) From the top side of the DVD mechanism assembly, re- move the two screws L attaching the dust cover. (See Fig.9.) (2) Remove the dust cover from the DVD mechanism assem- bly. (See Fig.9.) Refer

30、ence: When attaching the dust cover, align the joints f in the holes of the dust cover before attaching the screws L. (See Fig.9.) (3) Release the lock of the connector CN962 on the main sub board and disconnect the card wire. (See Fig.10.) (4) Bend the joint g in the direction of the arrow. (See Fi

31、g.10.) (5) Remove the two screws M attaching the main sub board and remove the main sub board from the DVD mechanism assembly. (See Fig.10.) Reference: When attaching the main sub board, align the joints h in the holes of the main sub board before attaching the screws M. (See Fig.10.) When the resol

32、ution of DVD mechanism assembly is done sequentially, remove the two screws N attaching the support bracket. (See Fig.11.) Remove the card wire from the connector CN401 as re- quired. (See Fig.11.) Fig.9 Fig.10 Fig.11 L L DVD mechanism assembly Dust cover f f Card wire g M h h CN962 Lock Main sub bo

33、ard DVD mechanism assembly Card wire N Support bracket CN401 1-10 (No.MA149) 3.1.9Removing the switch board (See Figs. 12 to 14) Remove the front panel assembly. (1) From the back side of the front panel assembly, remove the five screws P attaching the rear cover. (See Fig.12.) (2) Release the ten j

34、oints i attaching the rear cover to the front panel assembly. (See Fig.13.) (3) Take out the switch board while lifting the switch board from the front panel assembly little by little. (See Fig.14.) Reference: Remove the volume knob from the front side of the front panel assembly at the same time. N

35、ote: Do not lose the compression springs when removing the switch board. (See Fig.14.) Fig.12 Fig.13 Fig.14 P P Rear cover Front panel assembly P i i Rear cover i i Switch board Front panel assembly Compression spring Compression spring (No.MA149)1-11 3.2DVD mechanism assembly 3.2.1Removing the mech

36、anism control board (See Fig.1) Caution: Before disconnecting the flexible wire extending from the DVD pickup, solder the short-circuit point on the flexible wire using a grounding soldering iron. If you do not follow this instruction, the DVD pickup may be damaged. (1) Turn over the body, and solde

37、r the short-circuit points on the flexible wire extending from the DVD pickup. (2) Disconnect the flexible wire from connector CN101 on the mechanism control board. (3) Disconnect the card wire from connector CN201 on the mechanism control board. (4) Disconnect the flexible wire from connector CN202

38、 on the mechanism control board. (5) Unsolder two soldered points a on the mechanism control board and remove the wire extending from the feed motor. (6) Remove the screw A attaching the lug wire. (7) Remove the two screws B and screw C attaching the mechanism control board. Caution: As the flexible

39、 wire to be connected to CN101, make sure to attach it to the mechanism control board using a double tape. After reassembling, unsolder the short-circuit points. Fig.1 Double tape Feed motor Mechanism control board CN202 CN101 B a C B CN201 Flexible wire Short-circuit points A Lug wire 1-12 (No.MA14

40、9) 3.2.2Removing the top cover (See Fig.2) (1) Remove the two screws D attaching the top cover on the back of the body. (2) Remove the top cover upward. Reference: When reassembling, set part b of the top cover under the bending part c of the chassis frame. 3.2.3Removing the mechanism section (See F

41、ig.2 to 4) Remove the top cover. (1) From the bottom of the body, remove the screw E attaching the lug wire. (See Fig.2.) (2) Remove the two screws F attaching the right and left stop- pers on the front side. (See Fig.2.) (3) Remove the two floating springs on the bottom of the body. (See Fig.3.) (4

42、) Move the mechanism section upward and remove from the chassis frame. The three damper springs come off from the dampers. (See Fig.4.) Caution: When reassembling, reattach the damper spring to the damper respectively and insert the three shafts on the bot- tom of the mechanism to the dampers. Befor

43、e inserting the shaft to the dampers, apply IPA to the hole of damper. Fig.2 Fig.3 Fig.4 D Top cover Stopper Stopper F F b c E Lug wire D Floating spring Mechanism section Damper (R) (Purple) Damper (F) (Black) Damper (F) (Black) Chassis frame Damper SP.(F) (Silver) Damper SP.(F) (Silver) Damper SP.

44、(R) (Red) (No.MA149)1-13 3.2.4Removing the clamper unit (See Fig.5 to 7) Remove the top cover and the mechanism section. (1) Remove the clamper2 spring on the bottom of the mecha- nism section. (See Figs.5.and 6.) (2) Release the part d of the clamper spring from the bending part of the chassis base

45、 assembly. (See Fig.7.) (3) Move the clamper unit in the direction of the arrow and turn. Release the two joints e and f, then remove the clamper unit upward. (See Fig.6.) 3.2.5Reattaching the clamper unit (See Fig.5 to 9) (1) Attach the clamper spring to the clamper unit. (See Fig.8.) (2) Move the

46、clamper unit to set the side joints e and f to each boss of the chassis base assembly. Make sure that part g is inserted to the notch of the chassis base assembly. (See Figs.5 and 9.) (3) Move the part d of the clamper spring to the outside of the bending part of the chassis base assembly. (See Fig.

47、7.) (4) Attach the clamper2 spring to the chassis base assembly. (See Figs.5 and 6.) Caution: When reattaching, temporarily hook the end of the clamper spring as shown in the figure to make the work easy. (See Fig.8.) Fig.5 Fig.6 Fig.7 Clamper unit Clamper spring Clamper2 spring g f e Chassis base a

48、ssembly Clamper2 spring Chassis base assembly Clamper spring Chassis base assembly d 1-14 (No.MA149) Fig.8 Fig.9 Clamper unit Clamper spring Notch g Clamper unit (No.MA149)1-15 3.2.6Removing the front unit (See Fig.10 to 12) Remove the top cover and the mechanism section. (1) Disconnect the flexible

49、 wire from connector CN202 on the mechanism control board at the bottom of the body. (See Fig.10.) (2) Remove the screw G attaching the front unit on the top of the body. (See Fig.11.) (3) Move the front unit toward the front to release joint h, and release two joints i and j on the right side of the chassis base assembly. Then remove the front unit upward. (See Figs.11 and 12.) (4) Remove the two screws H attaching the switch board. (See Fig.12.) Reference: You can remove the switch board only without removing the fr