JVC GR-DVM55 Service Manual

4.6 PC IF SCHEMATIC DIAGRAM
[GR-DVX77EG/EK, GR-DVX88EG] .................................... 4-13
4.7 DVMAIN SCHEMATIC DIAGRAM [GR-DVX44EG/EK] ...... 4-15
4.8 DVMAIN SCHEMATIC DIAGRAM
[GR-DVX77EG/EK, GR-DVX88EG] .................................... 4-17
4.9 SERVO SCHEMATIC DIAGRAM ........................................ 4-19
4.10 PRE/REC SCHEMATIC DIAGRAM ................................. 4-21
4.11 V OUT SCHEMATIC DIAGRAM [GR-DVX44EG/EK] ....... 4-23
4.12 V OUT SCHEMATIC DIAGRAM
[GR-DVX77EG/EK, GR-DVX88EG] ................................. 4-25
4.13 CAM DSP SCHEMATIC DIAGRAM [GR-DVX44EG/EK] . 4-27
4.14 CAM DSP SCHEMATIC DIAGRAM
[GR-DVX77EG/EK, GR-DVX88EG] ................................. 4-29
4.15 ANA IN SCHEMATIC DIAGRAM
[THIS SCHEMATIC DIAGRAM IS NOT USED] ............... 4-31
4.16 TG/V.DRV SCHEMATIC DIAGRAM ................................. 4-33
4.17 REG SCHEMATIC DIAGRAM .......................................... 4-35
4.18 STO SENS SCHEMATIC DIAGRAM
[GR-DVX77EG/EK, GR-DVX88EG] ................................. 4-37
4.19 VF MAIN SCHEMATIC DIAGRAM ................................... 4-39
4.20 DSC SCHEMATIC DIAGRAM
[GR-DVX77EG/EK, GR-DVX88EG] ................................. 4-41
4.21 MP3 SCHEMATIC DIAGRAM [GR-DVX77EG/EK, GR-DVX88EG] . 4-43
4.22 USB DRV SCHEMATIC DIAGRAM
[GR-DVX77EG/EK, GR-DVX88EG] ................................. 4-45
4.23 W/B SCHEMATIC DIAGRAM ........................................... 4-47
4.24 CCD SCHEMATIC DIAGRAM .......................................... 4-48
4.25 MDA SCHEMATIC DIAGRAM .......................................... 4-49
4.26 IR TALLY SCHEMATIC DIAGRAM ................................... 4-51
4.27 OP DRIVER SCHEMATIC DIAGRAM .............................. 4-53
4.28 MONITOR SCHEMATIC DIAGRAM................................. 4-55
4.29 JUNCTION SCHEMATIC DIAGRAM ............................... 4-57
4.30 STROBE SCHEMATIC DIAGRAM
[GR-DVX77EG/EK, GR-DVX88EG] ................................. 4-59
4.31 AUDIO AD/DA SCHEMATIC DIAGRAM .......................... 4-61
4.32 MAIN AUDIO SCHEMATIC DIAGRAM ............................ 4-63
4.33 A/HP SEL. SCHEMATIC DIAGRAM ................................ 4-65
4.34 JACK SCHEMATIC DIAGRAM ........................................ 4-67
4.35 WB SENS, CAMERA OPE. UNIT, DECK OPE. ASSY
AND SUB OPE. UNIT SCHEMATIC DIAGRAMS ............ 4-69
4.36 MAIN CIRCUIT BOARD [GR-DVX44EG/EK] ................... 4-71
4.37 MAIN CIRCUIT BOARD [GR-DVX77EG/EK, GR-DVX88EG] . 4-77
4.38 MDA CIRCUIT BOARD .................................................... 4-83
4.39 CCD AND JUNCTION CIRCUIT BOARDS ...................... 4-85
4.40 MONITOR CIRCUIT BOARD ........................................... 4-87
4.41 AUDIO CIRCUIT BOARD ................................................ 4-89
4.42 STROBE, W/B AND JACK CIRCUIT BOARDS ............... 4-91
4.43 VOLTAGE CHARTS ......................................................... 4-93
4.44 POWER SYSTEM BLOCK DIAGRAM ............................. 4-97
4.45 VIDEO SYSTEM BLOCK DIAGRAM ............................... 4-99
5. PARTS LIST
5.1 PACKING AND ACCESSORY ASSEMBLY <M1> ............... 5-1
5.2 FINAL ASSEMBLY <M2> .................................................... 5-2
5.3 MECHANISM ASSEMBLY <M3> ........................................ 5-6
5.4 ELECTRONIC VIEWFINDER ASSEMBLY <M4> ................ 5-8
5.5 MONITOR ASSEMBLY <M5> ............................................. 5-9
5.6 ELECTRICAL PARTS LIST ................................................ 5-10
MAIN BOARD ASSEMBLY <01> ............................................. 5-10
MDA BOARD ASSEMBLY <02> .............................................. 5-19
CCD BOARD ASSEMBLY <03> .............................................. 5-20
MONITOR BOARD ASSEMBLY <04> ..................................... 5-20
JUNCTION BOARD ASSEMBLY <06> ................................... 5-21
STROBE BOARD ASSEMBLY(C,D,E) ..................................... 5-21
AUDIO BOARD ASSEMBLY <08> .......................................... 5-22
JACK BOARD ASSEMBLY <09> ............................................. 5-24
W/B BOARD ASSEMBLY <11> ............................................... 5-24
Important Safety Precautions
INSTRUCTIONS
1. DISASSEMBLY
1.1 BEFORE ASSEMBLY AND DISASSEMBLY ........................ 1-1
1.1.1 Precautions ..................................................................... 1-1
1.1.2 Assembly and disassembly ............................................. 1-1
1.1.3 Destination of connectors ................................................. 1-1
1.1.4 Disconnection of Connectors (Wires) .............................. 1-1
1.2 JIGS AND TOOLS REQUIRED FOR DISASSEMBLY,
ASSEMBLY AND ADJUSTMENT ......................................... 1-2
1.2.1 Tools required for adjustments ........................................ 1-2
1.3 DISASSEMBLY/ASSEMBLY OF CABINET PARTS AND
BOARD ASSEMBLY ............................................................. 1-2
1.3.1 Disassembly flow chart .................................................... 1-2
1.3.2 Disassembly method ....................................................... 1-3
1.4 DISASSEMBLY OF 5 MONITOR ASSEMBLY ..................... 1-8
1.4.1 5 Monitor assembly/Hinge assembly .............................. 1-8
1.4.2 Hinge assembly ............................................................... 1-8
1.5 DISASSEMBLY OF 7 OP BLOCK ASSEMBLY/CCD BOARD
ASSEMBLY ........................................................................... 1-9
1.5.1 Precautions ..................................................................... 1-9
1.5.2 How to remove OP block assembly and CCD board assembly 1-9
1.5.3
How to install OP block assembly and CCD board assembly 1-9
1.5.4 Replacement of service parts .......................................... 1-9
1.6 DISASSEMBLY OF 9 E. VF ASSEMBLY ........................... 1-10
1.6.1 9 E. VF assembly .......................................................... 1-10
1.7 EMERGENCY DISPLAY .................................................... 1-11
1.8 SERVICE NOTE ................................................................. 1-12
2. MECHANISM ADJUSTMENT
2.1
PRELIMINARY REMARKS ON ADJUSTMENT AND REPAIR 2-1
2.1.1 Precautions ..................................................................... 2-1
2.1.2 Notes on procedure for disassemby/assembly ................ 2-1
2.2 JIGS AND TOOLS REQUIRED FOR DISASSEMBLY,
ASSEMBLY AND ADJUSTMENT ......................................... 2-2
2.2.1 Tools required for adjustments ........................................ 2-2
2.3 DISASSEMBLY/ASSEMBLY OF MECHANISM ASSEMBLY 2-3
2.3.1 General statement ........................................................... 2-3
2.3.2 Explanation of mechanism mode .................................... 2-3
2.3.3 Mechanism timing chart .................................................. 2-4
2.4 DISASSEMBLY/ASSEMBLY OF MECHANISM ASSEMBLY 2-5
2.4.1 Follow chart ..................................................................... 2-5
2.4.2 Disassembly/assembly .................................................... 2-8
2.4.3 List of procedures for disassembly ................................ 2-14
2.5 CHECKUP AND ADJUSTMENT OF MECHANISM PHASE 2-15
2.6 MECHANISM ADJUSTMENTS .......................................... 2-16
2.6.1 Assembling slide deck assembly and main deck assembly . 2-16
2.6.2 Locating tension pole .................................................... 2-17
2.7 SERVICE NOTE .................................................................. 2-18
2.8 JIG CONNECTOR CABLE CONNECTION ........................ 2-20
3. ELECTRICAL ADJUSTMENT
3.1 Precaution ............................................................................ 3-1
3.2 SETUP ................................................................................. 3-2
4. CHARTS AND DIAGRAMS
NOTES OF SCHEMATIC DIAGRAM .......................................... 4-1
CIRCUIT BOARD NOTES ........................................................... 4-2
4.1 BOARD INTERCONNECTIONS [GR-DVX44EG/EK] ........... 4-3
4.2 BOARD INTERCONNECTIONS
[GR-DVX77EG/EK, GR-DVX88EG] ...................................... 4-5
4.3 SYSCON SCHEMATIC DIAGRAM [GR-DVX44EG/EK] ....... 4-7
4.4 SYSCON SCHEMATIC DIAGRAM
[GR-DVX77EG/EK, GR-DVX88EG] ...................................... 4-9
4.5 PC IF SCHEMATIC DIAGRAM [GR-DVX44EG/EK] ........... 4-11
TABLE OF CONTENTS
Section Title Page Section Title Page
GR-DVX44EG GR-DVX44EK GR-DVX77EG GR-DVX77EK GR-DVX88EG
VIDEO FLASH
DSC FLASH MEMORY NOT USED USED
DIGITAL SOUND RECODING
DV INPUT NOT USED USED
HEAD PHONE OUTPUT NOT USED USED
MEMORY CARD NOT USED USED (8 MB)
JACK BOX CU-V505 CU-V506
USB CABLE
NOT USED USED
USB TERMINAL
PC CONNECTION CABLE
USED NOT USED
JLIP/EDIT TERMINAL
The following table lists the differing points between Models GR-DVX44EG/EK, GR-DVX77EG/EK and GR-DVX88EG in this series.

JVC GR-DVM55 Specifications

General

Brand	JVC
Model	GR-DVM55
Category	Camcorder
Language	English