Jvc-KVM-706-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.MA209 2005/10 IN-DASH 7-INCH WIDESCREEN MONITOR MA209200510 KV-M705,KV-M706 Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . .

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

3、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 5TROUBLESHOOTING . . . . . . .

4、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14 Area suffix J - Northern America E - Southern Europe UT - Taiwan UN - Indonesia U - Other Areas KV-M706 Area suffix E - Southern Europe UT - Taiwan UN - Indonesia HUN - Indonesia

5、 U - Other Areas KV-M705 RadioFans.CN 收音机爱 好者资料库 1-2 (No.MA209) SPECIFICATION Design and specifications are subject to change without notice. Screen7 inch liquid crystal panel Number of pixel336 960 pixels (480 vertical 234 horizontal 3) Drive methodTFT (Thin Film Transistor) active matrix format Co

6、lor systemNTSC/PAL InputVideoRCA pin 2 circuits 1 V(p-p), 75 AudioRCA pin 2 circuits 1.5 V(rms) OutputVideoRCA pin 1 circuit 1 V(p-p), 75 AudioRCA pin 1 circuit 1.5 V(rms) Other terminalAV bus (AV BUS) Power requirementOperating voltageDC 14.4 V (11 V to 16 V allowance) Grounding systemNegative grou

7、nd Allowable operating temperature0C to +40C (32F to 104F) Allowable storage temperature-10C to +60C (14F to 140F) Dimensions (W H D) Installation size (approx.) With sleeve-mounting plate Type B (standard) : 182 mm 52 mm 165 mm (7-3/16 in. 2-1/16 in. 6-1/2 in.) With sleeve-mounting plate Type A : 1

8、82 mm 52 mm 160 mm (7-3/16 in. 2-1/16 in. 6-5/16 in.) Panel size (approx.)188 mm 58 mm 14 mm (7-7/16 in. 2-5/16 in. 5/8 in.) Mass (approx.)1.6 kg (3.6 lbs) RadioFans.CN 收音机爱 好者资料库 (No.MA209)1-3 SECTION 1 PRECAUTION 1.1Safety Precautions SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual doe

9、s not describe SPECIFIC SERVICE INSTRUCTIONS. ! 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. RadioFans.CN 收音机爱 好者资料库 1-4 (No.MA209) SECTION 3 DISASSEMBLY 3.1Main body section 3.1.1Re

10、moving the front assembly (See Figs.1 to 3) (1) From the both sides of the main body, remove the two screws A attaching the front assembly to the main body. (See Fig.1.) (2) From the bottom side of the main body, release the two claws a attaching the front assembly to the main body. (See Fig.2.) (3)

11、 Take out the front assembly forward from the main body. (4) Lift up the lock lever of the connector CN471 on the front key board and disconnect the card wire from it. (See Fig.3.) Fig.1 Fig.2 Fig.3 AAFront assembly Front assemblyClaws a Front assemblyFront key board Card wire CN471 (No.MA209)1-5 3.

12、1.2Removing the top drive unit (See Figs.4 to 6) Prior to performing the following procedure, remove the front assembly. (1) From the both sides of the main body, remove the four screws B attaching the top drive unit to the main body. (See Fig.4.) (2) From the back side of the main body, remove the

13、three screws C attaching the top drive unit to the main body. (See Fig.5.) (3) From the top side of the main body, lift the top drive unit from the bottom case assembly. (4) Lift up the lock lever of the connectors (CN391 and CN392) on the system control board and disconnect the flexible wires from

14、it. (See Fig.6.) (5) Take out the top drive unit from the bottom case assembly. Fig.4 Fig.5 Fig.6 B B Top case assembly Top drive unit CCTop drive unit System control boardBottom case assembly Flexible wires CN391CN392 Top drive unit 1-6 (No.MA209) 3.1.3Removing the LCD assembly (See Figs.7 to 10) P

15、rior to performing the following procedures, remove the front assembly and top drive unit. (1) From the top side of the top drive unit, remove the three screws D attaching the LCD assembly to the top drive unit. (See Fig.7.) (2) From the bottom side of the top drive unit, remove the two screws E att

16、aching the FPC guide and take out it. (See Fig.8.) (3) Move the LCD assembly in the direction of the arrow by turning the feed gear. (See Fig.8.) (4) From the top side of the top drive unit, remove the screw D attaching the LCD assembly to the top drive unit. (See Fig.9.) (5) Take out the LCD assemb

17、ly from the top drive unit. Reference: When reattaching the LCD assembly, pass the flexible wire through the slot c of the mecha assembly as before. (See Fig.10.) When reattaching the FPC guide, pass it through the section b as before. (See Fig.8.) Fig.7 Fig.8 Fig.9 Fig.10 D Bottom case assembly LCD

18、 assemblySection bSection b FPC guide Feed gearE D Bottom case assembly LCD assembly LCD assembly Slot c (No.MA209)1-7 3.1.4Removing the display rear cover (See Fig.11) Prior to performing the following procedures, remove the front assembly, top drive unit and LCD assembly. (1) From the back side of

19、 the LCD assembly, remove the three screws F attaching the display rear cover to the LCD as- sembly. (2) Take out the display rear cover from the LCD assembly. Fig.11 3.1.5Removing the display back panel (See Figs.12 and 13) Prior to performing the following procedures, remove the front assembly, to

20、p drive unit, LCD assembly and display rear cov- er. (1) From the back side of the LCD assembly, remove the two screws G attaching the display back panel to the LCD as- sembly. (See Fig.12.) (2) From the both sides of the LCD assembly, remove the six screws H attaching the display back panel to the

21、LCD as- sembly. (See Fig.13.) (3) Take out the display back panel from the LCD assembly. Fig.12 Fig.13 F Display rear cover G Display back panel H H Display back panel Display back panel 1-8 (No.MA209) 3.1.6Removing the monitor board (See Fig.14) Prior to performing the following procedures, remove

22、the front assembly, top drive unit, LCD assembly, display rear cover and display back panel. (1) From the back side of the LCD assembly, remove the three screws J attaching the monitor board to the LCD assembly. (2) Disconnect the wires from the connectors (CN791, CN851) on the monitor board. (3) Ta

23、ke out the monitor board with the insulator. Reference: When attaching the screw J, attach it with the ground spring. After connecting the wire to the connector CN851, fix it with the new tape. Fig.14 3.1.7Removing the LCD module (See Fig.15) Prior to performing the following procedures, remove the

24、front assembly, top drive unit, LCD assembly, display rear cover, display back panel and monitor board. (1) From the back side of the LCD assembly, release the four section d attaching the LCD module while lifting up the LCD module. (2) Take out the LCD module from the LCD assembly. Reference: When

25、releasing the LCD module, take care not to break it. Fig.15 3.1.8Removing the rear bracket (See Fig.16) Prior to performing the following procedures, remove the front assembly and top drive unit. (1) From the back side of the bottom case assembly, remove the six screws K attaching the rear bracket t

26、o the bottom case assembly. (2) Take out the rear bracket from the bottom case assembly. Fig.16 J J Monitor board CN791 Ground spring TapeCN851 LCD moduleSection d K Rear bracket (No.MA209)1-9 3.1.9Removing the system control board (See Fig.17) Prior to performing the following procedures, remove th

27、e front assembly, top drive unit and rear bracket. (1) From the top side of the bottom case assembly, remove the five screws M attaching the system control board to the bot- tom case assembly. (2) Disconnect the wire from the connector CN351 on the sys- tem control board. (3) Take out the system con

28、trol board from the bottom case assembly. Fig.17 3.1.10 Removing the front key board (See Fig.18) Prior to performing the following procedure, remove the front assembly. (1) From the back side of the front assembly, remove the spac- er from the front key board. (2) Remove the eight screws N attachin

29、g the front key board to the front assembly. (3) Take out the front key board from the front assembly. Reference: After reattaching the front key board, cover it with the new spacer. Fig.18 MSystem control boardCN351MM N Front key boardSpacer 1-10 (No.MA209) SECTION 4 ADJUSTMENT 4.1Service mode 4.1.

30、1Standard conditions Power supply voltage:DC14.4V (11V to 16V) 4.1.2Service mode setting procedure POWER buttonMENU button MODE button button OPEN/CLOSE button 1. Press the POWER button, and the display panel will come out and stand upright. 2. Press the POWER, and OPEN/CLOSE buttons in this order,

31、and keep them pressed for 3 seconds or more. 3. The service mode menu is displayed in the monitor. 4. To exit the service mode, press the POWER button on the main unit for more than 3 seconds. Service Mode Menu INITIALIZE ALL INFORMATION LCD SETTING MODE MONITOR MECHA RUNNING MONITOR MECHA CHECK REA

32、D MECHA ERROR CLEAR MECHA ERROR INITIALIZE DW/UP : SEL MODE : ENT The service mode menu is selected with the or button on the main unit, and the service mode menu is entered with the MODE button on the main unit. (No.MA209)1-11 4.1.3Operation procedures Service Mode Menu INITIALIZE ALL INFORMATION L

33、CD SETTING MODE MONITOR MECHA RUNNING MONITOR MECHA CHECK READ MECHA ERROR CLEAR MECHA ERROR INITIALIZE DW/UP : SEL MODE : ENT The service mode menu is selected with the or button on the main unit, and the service mode menu is entered with the MODE button on the main unit. INITIALIZE ALL NOW EXECUTI

34、NG COMPLETED INITIALIZE ALL : All data are initialized to the factory default. INFORMATION : Area / Region indication / Version indication INFORMATION KV-M705 SYS VER XXXX XX LCD INFO XX TV TUNER VER XXXX DOM MENU : BACK This is used for technical support only. Version number of system micom and ROM

35、 collection Area suffix of TV tuner (TV TUNER is connected.) Press the MENU button and the screen returns to the service mode menu. LCD adjustment mode LCD SETTING NTSC COM AMPLITUDE COM DC DAC OUT RGB AMPLITUDE BRIGHT GAMMA1 GAMMA2 SUB-BRIGHT R SUB-BRIGHT B MENU : EEPROM WRITE DW/UP : SEL MODE : EN

36、T MENU : EEPROM WRITE DW/UP : SEL MODE : ENT MENU : EEPROM WRITE DW/UP : SEL MODE : ENT See LCD adjustment for details. LCD SETTING NTSC PHASE CONTRAST TINT COLOR PICTURE INPUT MODE/SW AGC SW ON GAMMA TEST OFF NTSC/PAL CHANGE LCD SETTING NTSC EEPROM WRITE Press the MENU button. NOW EXECUTING is disp

37、layed while the data is written. After the data writing is completed, the screen returns to service mode menu after COMPLETED is displayed. Each setting value is written in EEPROM by pressing the MENU button. A Indication reshuffling Indication reshuffling NOW EXECUTING COMPLETED LCD SETTING NTSC SE

38、TTING DISP ON NOW EXECUTING is displayed while the data is cleared. After the data clear is completed, the screen returns to normal indication after COMPLETED is displayed for 3 seconds. Data to be Initialized All EEPROM data except the factory default of the system micom and ROM collection data. Ve

39、rsion number of TV tuner (TV TUNER is connected.) 1-12 (No.MA209) A Initialization of user setting data INITIALIZE NOW EXECUTING COMPLETED CLEAR MECHA ERROR NOW EXECUTING COMPLETED NOW EXECUTING is displayed while the data is cleared. After the data clear is completed, the screen returns to normal i

40、ndication after COMPLETED is displayed for 3 seconds. Data to be Initialized User setting data of the system micom (All EEPROM data except the factory default of system micom, ROM collection data and the Monitor Mecha Error history.) The Monitor Mecha Error history is cleared. Data to be cleared Mon

41、itor Mecha Error history stored in EEPROM. Monitor Mecha Check mode MONITOR MECHA CHECK ANGLE SENSOR MIN : XXXX ANGLE SENSOR MAX : XXXX Monitor Mecha Running mode MONITOR MECHA RUNNING RUNNING MODE-1 RUNNING MODE-2 RUNNING MODE-3 RUNNING MODE-4 RUNNING MODE-5 RUNNING MODE-6 MENU : BACK DW/UP : SEL M

42、ODE : ENT E-1 : XXXXXX E01 : XXXXXX E-2 : XXXXXX E02 : XXXXXX E-3 : XXXXXX E03 : XXXXXX E-4 : XXXXXX E-5 : XXXXXX MENU : BACK TOTAL ERROR : XXXXXX This mode is not used for service. To exit running mode, press the POWER button for more than 3 seconds. Then service mode is finished. MIN : Value of th

43、e monitor angle 0 C entered by the initialization processing. MAX : Value of the monitor angle 105 C entered by the initialization processing. (The displayed value is the AD value, which is taken into the system micom.) INITIALIZE OK/NG indicates completion/incompletion end of the initialization pro

44、cessing. (NG is displayed when mechanism initialization have not been completed.) INITIALIZE OK Read Mecha Error history READ MECHA ERROR Total number of errors, the first five and the latest three errors are displayed. Clear Mecha Error history Press the MENU button and the screen returns to servic

45、e mode menu. Press the MENU button and the screen returns to service mode menu. (No.MA209)1-13 4.1.4LCD adjustment LCD free run frequency adjustment (1) Set the main unit in a service mode. (2) Select LCD SETTING of the service mode. (3) Connect the frequency counter to TP708 and TP761 (GND) on the

46、monitor board. (Not supplying a signal in the input.) (4) Select DAC OUT of LCD SETTING menu to adjust. (5) Carry out this adjustment with both modes of NTSC and PAL. (Change NTSC/PAL CHANGE of LCD SETTING menu) NTSC 15.734kHz PAL 15.625kHz COM AMPLITUDE COM DC DAC OUT RGB AMPLITUDE BRIGHT GAMMA1 GA

47、MMA2 SUB-BRIGHT R SUB-BRIGHT B PHASE CONTRAST TINT COLOR PICTURE INPUT MODE/SW AGC SW ON GAMMA TEST OFF NTSC/PAL CHANGE SETTING DISP ON ItemContents LCD SETTING MENU Amplitude of the common voltage Center value of the LCD pulse Free run frequency of the LCD Amplitude of black-black Brightness GAMMA

48、point 1 Difference with GAMMA point 1 Red brightness Blue brightness Phase of R-Y/B-Y Contrast of video input Hue Deepness of a color Picture This mode not using it by service. This mode not using it by service. This mode not using it by service. Reshuffling of NTSC/PAL On/off for indication of adjustment value LCD SETTING NTSC COM AMPLITUDE XXH MODE : BACK DW/UP : SET Main unit operation in adjustment MODE key : Return to LCD SETTING menu. , key : Change value, one step changes by one time of input Carry out this operation with both modes of