JVC GR-DX77US Service Manual Download Page 5 | Manualshive

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(No.YF031)1-5

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

The following table indicate main different points between models GR-DX77US and GR-DX97US

MODEL

GR-DX77US

GR-DX97US

LCD MONITOR

2.5INCH

3.0INCH

MEMORY CARD

YES(Option)

YES(MMC8MB)

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Summary of Contents for GR-DX77US

Page 1: ...1 2004 3 GR DX77US GR DX97US For disassembling and assembling of MECHANISM ASSEMBLY refer to the SERVICE MANUAL No 86700 MECHANISM ASSEMBLY TABLE OF CONTENTS 1 PRECAUTIONS 1 3 2 SPECIFIC SERVICE INSTRUCTIONS 1 5 3 DISASSEMBLY 1 6 4 ADJUSTMENT 1 15 5 TROUBLE SHOOTING 1 18 GR DX77US M4D3S7 GR DX97US M4D3M7 ...

Page 2: ...1 2 No YF031 SPECIFICATION ...

Page 3: ...rts 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 voltage circuits and related circuits are specified for compliance with recognized codes pertaining to X ray emission Cons...

Page 4: ...g prongs and externally exposed accessible parts Use an AC voltmeter to measure across both terminals of load Z See Fig 1 1 9 and following Fig 1 1 12 Fig 1 1 9 5 Grounding Class 1 model only Confirm specified or lower grounding impedance between earth pin in AC inlet and externally exposed accessible parts Video in Video out Audio in Audio out or Fixing screw etc Measuring Method Connect milli oh...

Page 5: ...ECTION 2 SPECIFIC SERVICE INSTRUCTIONS The following table indicate main different points between models GR DX77US and GR DX97US MODEL GR DX77US GR DX97US LCD MONITOR 2 5INCH 3 0INCH MEMORY CARD YES Option YES MMC8MB ...

Page 6: ...mechanism tape transport system optical lens surface 3 2 ASSEMBLY AND DISASSEMBLY OF MAIN PARTS 3 2 1 Assembly and disassembly When reassembling perform the step s in reverse order 1 Order of steps in Procedure When reassembling preform the step s in the reverseorder These numbers are also used as the identification location No of parts Figures 2 Part to be removed or installed 3 Fig No showing Pr...

Page 7: ... 3 4 5 6 7 8 9 10 11 12 13 14 15 16 CASSETTE COVER ASSY SIDE COVER R TOP COVER SIDE COVER L ASSY UPPER CASE ASSY FRONT COVER ASSY MIC ASSY REAR COVER ASSY MONITOR BOARD SD BOARD ASSY LOWER UNIT ASSY INCLUDEVFASSY OPBLOCKASSY VF ASSY OPBLOCKASSY CCDBOARDASSY MAIN BOARD ASSY MDA BOARD ASSY MECHANISM ASSY GRIP BELT ASSY 2 S1 HOOK F S1 L1a COVER ADJ 4 S1 L1b S2a S2b L2a L2b 2 S3 2 L3 6 S4a S4b S4c COV...

Page 8: ... S1 L1b S1 S1 S1 S1 S1 b a HOOK F NOTE1 COVER ADJ L1a a b a b 10 11 c c d d 8 9 2 3 S2a S2b S3 S3 L2a L2b L3 a b c e f 18 4 S4a S4a S4a S4a S4a S4a S4b NOTE4a NOTE4b NOTE4b 12 13 a b 14 15 c d d 16 17 e f g g h DC AV 19 h S4c COVER DV ASSEMBLY JACK COVER ASSEMBLY ...

Page 9: ...F031 1 9 Fig C4 Fig C5 21 22 a b a b 20 23 24 CN5 S5 5 S5 S5 S5 S5 NOTE5 L5 COVER JIG CON 0 078N m 0 8kgf cm 26 27 28 29 25 a a b b c c d d e e CN6 7 NOTE7 30 31 6 S6 S6 S6 S6 S6 S7 S7 BKT MIC ASSEMBLY NOTE6 ...

Page 10: ... 37 40 39 41 36 a a 34 35 9 b b CN9a CN9b BKT TOP ASSEMBLY S9 S9 S9 S9 S9 S9 S9 S9 L9a L9a L9b L9c NOTE9 42 43 44 45 10 11 CN11a CN10 CN11b CN11c CN11d CN11e a a b b S10 S11 S11 S11 46 47 48 a a b c 50 51 52 12 NOTE12a b 49 b c 13 S12 S12 S12 S12 S13a S13b S13b L13 NOTE13 ...

Page 11: ...CN14a CN14b CN14c a a b b S14 S14 SHIELD COVER L14a SPACER A NOTE14 0 069N m 0 7kgf cm a b b a 55 56 57 58 59 60 15 16 CN16a CN16b CN16c CN16d S15 S15 BKT PRE REC S16a S16b S16b S16b BKT MECHA ASSEMBLY NOTE16 0 069N m 0 7kgf cm 0 078N m 0 8kgf cm ...

Page 12: ...ks L9a and L9b in alpha betical order remove the MONITOR COVER ASSY 4 Remove the SWITCH BOARD from the MONITOR CASE 5 Unlock the two connectors CN9a and CN9b and raise and remove the HINGE UNIT ASSEMBLY NOTE9a During the procedure be careful in handling the FPC ASSEMBLY 6 Unlock one connector CN9c and remove the FPC 7 Remove one screw 11 and remove the MONITOR BOARD ASSEMBLY together with the BACK...

Page 13: ...oved FPC since the FPC is attached again NOTE12d Disassemble the COVER VF if necessary In an at tachment procedure confirm that the LEVER 1 moves smoothly 8 Remove the two screws 10 and 11 and remove the FRAME ASSEMBLY 9 Remove the SPACER A and remove the FPC from one connector CN12b 10 Remove the two screws 12 and 13 and remove the VF BOARD ASSEMBLY NOTE12e Disassemble the FRAME ASSEMBLY if neces...

Page 14: ...e LOW PASS FILTER HOLDER and the OP LPF is attached to the LOW PASS FILTER HOLDER by using the SHEET remove the OP LPF from the LOW PASS FILTER HOLDER if necessary In removing the OP LPF from the LOW PASS FILTER HOLDER be careful not to damage the LOW PASS FILTER HOLDER and remove the SHEET carefully if you want to use the same SHEET in attachment pro cedure NOTE13d In removing the OP LPF be caref...

Page 15: ...lloscope dual trace type observable 100MHz or higher frequency The one observable 300 MHz or higher frequency is recommended Digital voltmeter DC power supply or AC adapter Frequency counter with threshold level adjuster 4 1 3 TOOLS REQUIRED FOR ADJUSTMENT Torque driver Be sure to use to fastening the mechanism and exterior parts because those parts must strictly be controlled for tightening torqu...

Page 16: ...ment lens refer to the Service Bulletin No YA SB 10035 Alignment tape To be used for check and adjustment of interchangeability of the mechanism PC cable To be used to connect the Videocamera and a personal computer with each other when a personal computer issued for adjustment Communication cable Connect the Communication cable between the PC cable and Jig connector cable when performing a PC adj...

Page 17: ...ormed by using a personal computer and software for SERVICE SUPPORT SYSTEM Read README TXT file to use the software properly As for the connection of cables see 4 2 JIG CONNECTOR CABLE CONNECTION EXMOD_1 MMOD_0 MMOD_1 I_MTR MONI_CHG NC RESET AL_3VSYS IF_TX JLIP_TX JLIP_RX TMS_DSC TCK_DSC TDI_DSC TRST_DSC TDO_DSC PB_CLK ENV_OUT MAIN_VCO ATFI HID1 DISCRI FS_PLL TXD2 SPA SBE RXD2 GND GND V_OUT VCOM_M...

Page 18: ... order of screw Place to stick screw Reference drawing Fig No Screw tightening torque Removing order of screw Place to stick screw Reference drawing Fig No Screw tightening torque Removing order of screw Place to stick screw Reference drawing Fig No Screw tightening torque 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 10 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 ...

Page 19: ...at is seen through a space of VF side NOTE Be careful not to attach grease or a similar substance to the surface of the cassette tape on the tape transport system 5 Wind the cassette tape by directly turning the Reel Disk As sembly SUP from the backside of the SLIDE DECK AS SEMBLY by using a sharp tool Chip IC replacement tool 6 Confirm that the cassette tape is completely wound and then peel off ...

Page 20: ...ell 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 is taken up and the tape comes into the normal...

Page 21: ...1 WPC Printed in Japan JVC SERVICE ENGINEERING COMPANY OF AMERICA DIVISION OF JVC AMERICAS CORP www jvcservice com US Only JVC CANADA INC Head office 21 Finchdene Square Scarborough Ontario M1X 1A7 416 293 1311 ...

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