JVC GR-D70EK Service Manual Download

Page: 23 / 24

(No.86733)1-23

3.5 ELECTRICAL ADJUSTMENT
3.5.1 Electrical adjustment with personal computer

• Electrical adjustmentis performed by using PERSONAL COMPUTER. As for the connection of cables, see Fig. 3-5-1. Read RE-

ADME.TXT file to use the software for SERVICE SUPPORT SYSTEM properly.

• Remove the COVER (JIG) to perform adjustment.

Fig.3-5-1

RED

TO JLIP_RX

WHITE

BLACK

TO JLIP_TX

TO GND

COMMUNICATION CABLE JIG CONNECTOR

EXTENSION CONNECTOR

Removing the cover (for jig), use this extension

connector triple for connecting the jig connector

cable.

NOTE:

JIG CONNECTOR CABLE

COMMUNICATION CABLE

CN105

COVER

(JIG)

SERVICE SUPPORT SYSTEM

RS232C

COM PORT

PC CABLE

PERSONAL COMPUTER

Summary of Contents for GR-D70EK

Page 1: ...Format DV format SD mode Signal format PAL standard Recording Playback format Video Digital component recording Audio PCM digital recording 32 kHz 4 channel 12 bit 48 kHz 2 channel 16 bit Cassette Mini DV cassette Tape speed SP 18 8 mm s LP 12 5 mm s Maximum recording time SP 80 min using 80 min cassette LP 120 min Storage media SD Memory Card MultiMediaCard Compression system JPEG compatible File...

Page 2: ...DIO_AD SCHEMATIC DIAGRAM 2 9 AUDIO SCHEMATIC DIAGRAM 2 11 DV_MAIN SCHEMATIC DIAGRAM 2 13 VIDEO I O SCHEMATIC DIAGRAM 2 15 CAMERA DSP SCHEMATIC DIAGRAM 2 17 OP DRIVER SCHEMATIC DIAGRAM 2 19 TG SCHEMATIC DIAGRAM 2 21 USB SCHEMATIC DIAGRAM 2 22 REG SCHEMATIC DIAGRAM 2 23 DSC SCHEMATIC DIAGRAM 2 25 MONI BW SCHEMATIC DIAGRAM 2 27 BL 2 5 BL 3 5 SCHEMATIC DIAGRAM 2 29 CCD SCHEMATIC DIAGRAM 2 30 MDA SCHEM...

Page 3: ...ts 9 When a power cord has been replaced check that 10 15 kg of force in any direction will not loosen it Fig 1 1 2 10 Also check areas surrounding repaired locations 11 Products using cathode ray tubes CRTs In regard to such products the cathode ray tubes themselves the high volt age circuits and related circuits are specified for compliance with recognized codes pertaining to X ray emission Cons...

Page 4: ...istance d d between soldered termi nals and between terminals and surrounding metallic parts See Fig 1 1 11 below Fig 1 1 8 4 Leakage current test Confirm specified or lower leakage current between earth ground power cord plug prongs and externally exposed ac cessible parts RF terminals antenna terminals video and audio input and output terminals microphone jacks ear phone jacks etc Measuring Meth...

Page 5: ...ooked unlocked released unplugged unclamped or unsoldered 5 Adjustment information for installation 2 1 3 Destination of connectors 2 1 4 Disconnection of connectors Wires Pull both ends of the connector in the arrow direction remove the lock and disconnect the flat wire Fig 2 1 1 Extend the locks in the direction of the arrow for unlocking and then pull out the wire After removing the wire immedi...

Page 6: ...PEAKER is soldered to the MONI BW BOARD AS SEMBLY the SPEAKER should not be separated from the MONI BW BOARD ASSEMBLY except when replacing the SPEAKER NOTE 11c Take care not to lose the KNOB SLIDE When attaching the KNOB SLIDE attach the KNOB SLIDE in a proper position NOTE 3 After removing the FRONT COVER ASSEMBLY OP BLOCK ASSEMBLY is not covered with anything Take care not to damage the OP BLOC...

Page 7: ...733 1 7 Fig C1 Fig C2 2 Fig C2 1 L1 S1 1 1 c NOTE 8a NOTE 8b 13 S8 12 S8 8 c L8 CN8a a b b a 7 2 8 12 S2c 2 S2a 3 S2b 8 S2d 10 S2e 11 S2c 9 S2d 4 S2b 5 S2c 6 S2c CN2a CN2b L2 TOP SIDE REAR SIDE BOTTOM SIDE c ...

Page 8: ...9 15 S9 0 147N m 1 5kgf cm L10 10 9 L9 CN10a 18 S10b 19 S10b NOTE 10b L CASE SIDE 28 S3 CN4 L3a OP BLOCK ASSEMBLY NOTE 3 L3b 4 3 4 29 S4 28 S3 COVER JACK e e 20 S11a 22 S11b 21 S11a 23 S11b 12 NOTE11b BKT HINGE 11 NOTE11c KNOB SLIDE 24 S11c 25 S11c 27 S11c 26 S11c NOTE 11a ...

Page 9: ... No 86733 1 9 Fig C4 6 34 S6 h g h g 35 S7a 38 S7b 32 S5b 31 S5b 33 S5b 37 S7b 36 S7b 30 S5a CN7a CN7b CN6 5 7 L5 f f ...

Page 10: ...MBLY 3 4 PREMDA BOARD ASSEMBLY MECHANISM ASSEMBLY OP BLOCK ASSEMBLY MAIN CN108 MAIN CN107 MAIN CN111 MAIN CN110 PREMDA CN406 PREMDA CN405 PREMDA CN404 PREMDA CN402 PREMDA CN403 PREMDA CN407 OP BLOCK ASSEMBLY CN501 CCD CN5001 PREMDA CN408 PREMDA CN401 SENSOR CAPSTAN MOTOR DRUM MOTOR HEAD LOADING MOTOR ROTARY ENCODER CN1a CN1b CN1c CN1d CN3a CN3b CN3c CN3d CN3e CN3f 24 20 40 40 16 18 11 8 6 6 CONN N...

Page 11: ... No 86733 1 11 Fig D3 4 S3a 5 S3a L3 PREMDA BOARD ASSEMBLY 6 S3b 7 S3b 9 S4 0 069N m 0 7kgf cm 0 078N m 0 8kgf cm 8 S4 PR SHIELD COVER 4 BKT MECHA CN3a CN3b CN3c CN3e CN3f CN3d 3 10 S4 ...

Page 12: ... the LCD UNIT ASSEMBLY with the FPC NOTE 8c In attaching the LCD UNIT ASSEMBLY put the projec tions of the LCD UNIT ASSEMBLY in the slots of the BOTTOM CASE VF Put the STOPPER of the FPC in side the BOTTOM CASE VF In attaching the UPPER CASE VF F and the UPPER CASE VF R attach the UPPER CASE VF F first and then the UPPER CASE VF R and be careful to keep the FPC inside the BOTTOM CASE VF 2 4 2 Disa...

Page 13: ... Remove one screw 5 and then remove the BL BOARD ASSEMBLY together with the BACK LIGHT ASSEMBLY NOTE 10a It depends on the inch size of the monitor assembly whether the backlight is supplied as an assembly or as separated parts In replacing the backlight assembly see the Parts List NOTE 10b Since the BACK LIGHT ASSEMBLY is soldered to the BL BOARD ASSEMBLY the BACK LIGHT should not be separated fr...

Page 14: ...isconnect the FPC of the LCD MODULE from the connec tor CN10c 5 Remove one screw 5 and then remove the BL BOARD ASSEMBLY together with the BACK LIGHT NOTE 10 Since the BACK LIGHT is soldered to the BL BOARD ASSEMBLY the BACK LIGHT should not be separated from the BL BOARD ASSEMBLY except when replacing them 6 While removing the five hooks L10e L10i in alphabetical order remove the LCD FRAME togeth...

Page 15: ...4 Remove the SHEET 5 Remove the OP LPF 2 6 3 Assembly of CCD BASE ASSEMBLY and CCD BOARD ASSEMBLY 1 Set the OP LPF to the OP BLOCK ASSEMBLY so that the OP side touches the OP BLOCK ASSEMBLY NOTE 2a Pay careful attention to the orientation of the OP LPF 2 Set the SHEET to the OP LPF not to come off the right position 3 Attach the SPACER to the OP BLOCK ASSEMBLY 4 Fasten them together with the two s...

Page 16: ...Reference drawing Fig No Reference drawing Fig No Reference drawing Fig No Screw tightening torque Screw tightening torque Symbol No Removing order of screw Place to stick screw Symbol No Symbol No Removing order of screw Place to stick screw Reference drawing Fig No Screw tightening torque Symbol No Removing order of screw Place to stick screw MONITOR ASSEMBLY Removing order of screw Place to sti...

Page 17: ...d at the unloading end 4 Apply DC 3V to the electrode on the top surface of the LOADING MOTOR ASSEMBLY to set the MECHANISM ASSEMBLY to the EJECT mode Unloading end is EJECT mode 5 If there is any slack tape in the tape transport system wind it inside the DVC CASSETTE TAPE by turning the REEL DISK ASSEMBLY SUP from the backside of the SLIDE DECK ASSEMBLY 6 Peel off the PVC TAPE and take out the DV...

Page 18: ...dler gear does not engage with the reel disk well 2 Though the idler gear and reel disk are engaged with each other the tape is not wound because of overload to the mechanism 3 No FG pulse is output from the reel sensor 4 No power is supplied to the reel sensor 5 Tape transport operation takes place with a cassette having no tape inside 6 The tape slackens and no pulse is produced until the slack ...

Page 19: ...ent and adjustment etc a In case of wiring to chip test points for measurement use IC clips etc to avoid any stress b Since connectors are fragile carefully handle them in disconnecting and connecting c Short circuit between operation unit and DECK chas sis 2 Required test equipment a Color TV monitor b AC power adapter c Oscilloscope dual trace type observable 100 MHz or higher frequency It is re...

Page 20: ...chart To be used for adjustment of the camera system For the us age of the INF adjustment lens refer to the Service Bulletin No YA SB 10035 9 Jig connector cable Connected to CN105 of the main board and used for electrical adjustment etc NOTE Only some of the connectors in the JIG connector YTU93106B are soldered to wires It is desirable that you solder all the connectors to wires before using the...

Page 21: ...AIN_VCO NC NC NC NC NC NC NC NC NC MONI_CHG GND NC NC ENV_OUT NC NC FS_PLL NC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 AL_3VSYS CJIG_RST VIDL VCOM STH1 CVF_R CVF_B V_OUT GND MON_R MON_G CVF_G MON_B MONI_CHG JLIP_RX GND JLIP_TX PB_CLK HID1 GND ATFI ENV_OUT MAIN_VCO DISCRI I_MTR IF_TX EXMOD_0 FS_PLL MMOD_0 MMOD_1 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19...

Page 22: ...own is observed on the right hand side however straighten the level by turning the GUIDE ROLL ER TU of the POLE BASE ASSEMBLY 7 After adjustment try the unloading motion once and con firm that the waveform is flat straight when the tape has been played back again Moreover perform readjustment as required 8 When the recording has been played back again play back the self recording to confirm that t...

Page 23: ...e software for SERVICE SUPPORT SYSTEM properly Remove the COVER JIG to perform adjustment Fig 3 5 1 RED TO JLIP_RX WHITE BLACK TO JLIP_TX TO GND COMMUNICATION CABLE JIG CONNECTOR EXTENSION CONNECTOR Removing the cover for jig use this extension connector triple for connecting the jig connector cable NOTE JIG CONNECTOR CABLE COMMUNICATION CABLE CN105 COVER JIG SERVICE SUPPORT SYSTEM RS232C COM PORT...

Page 24: ... No 86733 AV MULTIMEDIA COMPANY CAMCORDER CATEGORY 12 3 chome Moriya cho kanagawa ku Yokohama kanagawa prefecture 221 8528 Japan VICTOR COMPANY OF JAPAN LIMITED 200304WPC Printed in Japan ...

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