Jvc-KVMAV-7002-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.MA101 2005/1 DVD RECEIVER WITH MONITOR MA10120051 KD-AV7000,KD-AV7001, KD-AV7005,KD-AV7008, KV-MAV7001,KV-MAV7002 TABLE OF CONTENTS 1PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2、 . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3、. . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-51 Area suffix UN -Asean U - Other Areas KD-AV7005 Area suffix U - Other Areas KV-MAV7001,KV-MAV7002 Area suffix J - Northern America KD-AV7000 Area suffix E - Southern Europe EU - Turkey KD-AV7001 Area suffix A - Australia KD-AV7008

5、RadioFans.CN 收音机爱 好者资料库 1-2 (No.MA101) SPECIFICATION Main unit AUDIO AMPLIFIER SECTION Maximum Power OutputFront50 W per channel Rear50 W per channel Center35 W Continuous Power Output (RMS) Front19 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion. Rear19 W pe

6、r channel into 4 , 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion. Center15 W into 4 , 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion. Load Impedance4 (4 to 8 allowance) Equalizer Control RangeFrequencies100 Hz, 300 Hz, 1 kHz, 3 kHz, 10 kHz Level10 dB Frequency

7、Response40 Hz to 20 000 Hz Signal-to-Noise Ratio70 dB TUNER SECTION Frequency RangeFM87.5 MHz to 107.9 MHz AM530 kHz to 1 710 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

8、000 Hz Stereo Separation35 dB Capture Ratio1.5 dB AM TunerSensitivity20 V Selectivity35 dB LW TunerSelectivity50 V (KV7001 only) DVD/CD PLAYER SECTION Signal Detection SystemNon-contact optical pickup (semiconductor laser) Number of channels2 channels (stereo) Frequency ResponseDVD, fs=48 kHz16 Hz t

9、o 22 000 Hz DVD, fs=96 kHz16 Hz to 44 000 Hz VCD, CD, MP316 Hz to 20 000 Hz Dynamic Range96 dB Signal-to-Noise Ratio98 dB Wow and FlutterLess than measurable limit MP3 Recording FormatMPEG 1/2 Audio Layer 3 Max. Bit rate: 320 kbps RadioFans.CN 收音机爱 好者资料库 (No.MA101)1-3 Hideaway unit Design and specif

10、ications are subject to change without notice. REMOVABLE MONITOR Screen Size7 inch wide liquid crystal display Number of Pixel336 960 pixels (480 vertical 234 horizontal 3) Drive MethodTFT (Thin Film Transistor) active matrix format Color SystemNTSC Aspect Ratio16:9 (wide) Allowable Storage Temperat

11、ure-10C to +60C (14F to 140F) Allowable Operating Temperature0C to +40C (32F to 104F) Dimensions (W H D)170 mm 141 mm 15 mm (6-3/4 in. 5-5/8 in. 5/8 in.) Mass475 g (1.1 lbs) GENERAL Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding SystemNegative ground Allowable Operati

12、ng Temperature0C to +40C (32F to 104F) Dimensions (W H D)Installation Size182 mm 52 mm 165 mm (7-3/16 in. 2-1/16 in. 6-1/2 in.) (With sleeve-mounting plate Type B (standard) 182 mm 52 mm 160 mm (7-3/16 in. 2-1/16 in. 6-5/16 in.) (With sleeve-mounting plate Type A) Panel Size188 mm 58 mm 14 mm (7-7/1

13、6 in. 2-5/16 in. 5/8 in.) Mass2.25 kg (5.1 lbs) (including monitor) Input TerminalsAV INPUT 1/2 Audio: 0.5 Vrms (Left/Right) Video (composite): 1 Vp-p/75 Output Terminals (Level/Impedance) AV OUTPUTAudio: 2.0 V/20 k load (full scale) Video (composite): 1 Vp-p/75 PRE OUTAudio: 2.0 V/20 k load (full s

14、cale) Other TerminalsSystem integration (TO MAIN UNIT) FM/AM antenna (FM/AM ANTENNA) AV bus (AV BUS) CD changer (TO CHANGER) Rear view camera/Center speaker (BACKCAMERA REMOTE/CENTER SPEAKER) Power cord (POWER) Dimensions (W H D)230 mm 35 mm 181 mm (9-1/16 in. 1-7/16 in. 7-3/16 in.) Mass1.3 kg (2.9

15、lbs) RadioFans.CN 收音机爱 好者资料库 1-4 (No.MA101) SECTION 1 PRECAUTIONS 1.1Safety 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

16、 directly or touch it in case of an adjustment or operation check. (No.MA101)1-5 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). Tak

17、e care to prevent this when performing repairs. 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

18、) Ground the workbench Ground the workbench by 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) Han

19、dling the optical pickup In order to maintain 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

20、condition of the laser diode in the optical pickup. The testers internal power source can easily destroy the laser diode. 1.3Handling the traverse unit (optical pickup) (1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit. (2) Cut off the shorted

21、 part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a time when attaching it to the connector. (3) Handle

22、 the flexible cable carefully as it may break when subjected to strong force. (4) It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it. 1.4Attention when traverse unit is decomposed *Please refer to Disassembly method in the text for the CD pickup unit. A

23、pply solder to the short land before the flexible wire is disconnected from the connector on the CD pickup unit. (If the flexible wire is disconnected without applying solder, the CD pickup may be destroyed by static electricity.) In the assembly, be sure to remove solder from the short land after c

24、onnecting the flexible wire. 1M (caption) Anti-static wrist strap Conductive material (conductive sheet) or iron plate Front end board CN101 Flexible wire Short-circuit points 1-6 (No.MA101) 1.5Important for laser products 1.CLASS 1 LASER PRODUCT 2.DANGER : Invisible laser radiation when open and in

25、ter lock failed or defeated. Avoid direct exposure to beam. 3.CAUTION : There are no serviceable parts inside the Laser Unit. Do not disassemble the Laser Unit. Replace the complete Laser Unit if it malfunctions. 4.CAUTION : The CD,MD and DVD player uses invisible laser radiation and is equipped wit

26、h safety switches which prevent emission of radiation when the drawer is open and the safety interlocks have failed or are defeated. It is dangerous to defeat the safety switches. 5.CAUTION : If safety switches malfunction, the laser is able to function. 6.CAUTION : Use of controls, adjustments or p

27、erformance of procedures other than those specified here in may result in hazardous radiation exposure. REPRODUCTION AND POSITION OF LABELS ! Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. WARNING LABEL CAUTION : Visible and Invisible

28、laser radiation when open and interlock failed or defeated. AVOID DIRECT EXPOSURE TO BEAM. (e) VARNING : Synlig och osynling laserstrlning nr den ppnas och sprren r urkopplad. Betrakta ej strlen. (s) VARO : Avattaessa ja suojalukitus ohitettuna tai viallisena olet alttiina nkyvlle ja nkymttmlle lase

29、rsteilylle. Vlt steen kohdistumista suoraan itseesi. (f) ADVARSEL : Synlig og usynlig laserstrling nr maskinen er ben eller interlocken fejeler. Undg direkte eksponering til strling. (d) CLASS 1 LASER PRODUCT (No.MA101)1-7 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe

30、 SPECIFIC SERVICE INSTRUCTIONS. 1-8 (No.MA101) SECTION 3 DISASSEMBLY 3.1Receiver unit section 3.1.1Removing the display unit (See Fig.1) From the top side of the main body, pull the display unit out of the main body in the direction of the arrow. Fig.1 3.1.2Removing the detach panel assembly (See Fi

31、g.2) From the front side of the main body, slide the detach button in the direction of the arrow and remove the detach panel assem- bly. Fig.2 Display unit Detach panel assembly Detach button (No.MA101)1-9 3.1.3Removing the front panel assembly (See Figs.3 to 5) Remove the display unit and detach pa

32、nel assembly as re- quired. (1) From the both sides of the main body, remove the two screw A attaching the front panel assembly. (See Figs.3 and 4) (2) From the bottom side of the main body, remove the FPC cover. (See Fig.5.) (3) Release the lock of the connector CN75 on the main board and disconnec

33、t the card wire. (See Fig.5.) (4) Release the joints a and remove the front panel assembly from the main body in the direction of the arrow. (See Fig.5.) Fig.3 Fig.4 Fig.5 A Front panel assembly A Front panel assembly Main boardCN75 FPC cover a a Lock Front panel assembly 1-10 (No.MA101) 3.1.4Removi

34、ng the top drive unit (See Figs.6 to 9) Prior to performing the following procedures, remove the dis- play unit, detach panel assembly and front panel assembly. (1) From the both sides of the main body, remove the four screws B attaching the top drive unit. (See Figs.6 and 7.) (2) From the rear side

35、 of the main body, remove the three screws C attaching the top drive unit. (See Fig.8.) (3) Remove the top drive unit from the main body and turn it inside out. (See Fig.9.) (4) Remove the two screws C attaching the F.P.C. guide on the display drive unit. (See Fig.9.) (5) Release the lock of the con

36、nector CN301 on the mecha- nism board and disconnect the flexible wire. (See Fig.9.) (6) Remove the two screws D attaching the CN guide. (See Fig.9.) (7) Remove the three screws E attaching the PWB base. (See Fig.9.) (8) Remove the screw F attaching the connect board. (See Fig.9.) (9) Take out the c

37、onnect board in the direction of the arrow. (See Fig.9.) (10) Release the lock of the connector CN391 on the connect board and disconnect the flexible wire. (See Fig.9.) Fig.6 Fig.7 Fig.8 Fig.9 B Top drive unit B Top drive unit Top drive unit B Lock CN301 Motor board LockCN391 Connect board F.P.C.gu

38、ide Display drive unit Top drive unit CN guide C D C F E E PWB base (No.MA101)1-11 3.1.5Removing the rear bracket (See Figs.10) Prior to performing the following procedures, remove the dis- play unit, detach panel assembly, front panel assembly and top drive unit. From the rear side of the main body

39、, remove the five screws G attaching the rear bracket. Fig.10 3.1.6Removing the DVD mechanism assembly (See Figs.11 and 12) Prior to performing the following procedures, remove the dis- play unit, detach panel assembly, front panel assembly and top drive unit. (1) From the top side of the main body,

40、 release the lock of the connector CN52 on the main board in an upward direction and disconnect the flexible wire. (See Fig.11.) (2) Remove the two screws H and screw J attaching the mech- anism cover. (See Fig.11.) (3) Release the lock of the connector CN101 on the main board in an upward direction

41、 and disconnect the card wire. (See Fig.12.) Reference: When connecting the card wire to the connector CN101, pass it through the lower part of the mechanism bracket. (See Fig.12.) Fig.11 Fig.12 G Rear bracket J CN52 Main board HH Mechanism cover Flexible wire DVD mechanism assembly Mechanism bracke

42、t CN101 Main board 1-12 (No.MA101) 3.1.7Removing the main board (See Figs.13 and 14) Prior to performing the following procedures, remove the dis- play unit, detach panel assembly, front panel assembly, top drive unit and DVD mechanism assembly. (1) From the rear side of the main body, remove the fo

43、ur screws K attaching the rear bracket. (See Fig.13.) (2) From the top side of the main body, remove the two screws L attaching the mechanism bracket on the bottom chassis assembly. (See Fig.14.) (3) Remove the five screws M and two screws N attaching the main board. (See Fig.14.) (4) Take out the m

44、ain board from the bottom chassis assem- bly. Reference: When attaching the main board on the bottom chassis assem- bly, align the projections b of the bottom chassis assembly in the hole of the main board. (See Fig.14.) Fig.13 Fig.14 3.1.8Removing the front board (See Fig.15) Prior to performing th

45、e following procedures, remove the de- tach panel assembly and front panel assembly. (1) From the inside of the front panel assembly, remove the three screws P and screw P attaching the front board. (2) Take out the lock lever assembly from the front panel as- sembly. (3) Bend the hooks c in the dir

46、ection of the arrow. (4) Release the front board from the sections d and take out the front board from the front panel assembly. Reference: When attaching the screw P, attach the lock lever assembly with it. Fig.15 K Rear bracket Mechanism bracketN b b b Bottom chassis assembly L M Main board MN M L

47、 Lock lever assembly Front board Front panel assembly c d c d P P (No.MA101)1-13 3.2Top drive unit section Remove the top drive unit from the main body. (See 3.1.4 Removing the top drive unit.) 3.2.1Removing the display drive unit (See Fig.1) (1) From the both sides of the top drive unit, remove the

48、 two screws A attaching the display guides L/R and remove the display guides L/R from the top chassis assembly. (2) Slide the display drive unit by manual operation in the di- rection of the arrow and remove it from the top chassis as- sembly. Fig.1 Top chassis assembly Display drive unit Display gu

49、ide L A Display guide R A 1-14 (No.MA101) 3.2.2Removing the drive gears and forth gear (See Figs.2 to 4) Remove the display drive unit. (1) From the both sides of the display drive unit, remove the four screws B attaching the guide rails (L)/(R). (See Figs.2 and 3.) (2) From the top side of the display drive unit, pull the drive gears out of a drive gea