Table Of Contents - JVC GR-DVL120U Service Manual

Section Title
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 $ MONITOR ASSEMBLY ..................................................... 1-9
1.4.1 Disassembly/assembly of monitor assembly
(for 2.5"-type LCD) ........................................................... 1-9
1.4.2 Disassembly/assembly of hinge assembly
(for 2.5"-type LCD) ........................................................... 1-9
1.5 # E. VF ASSEMBLY ........................................................... 1-10
1.5.1 Disassembly/assembly of E.VF assembly (for the B/W VF) . 1-10
1.6 DISASSEMBLY/ASSEMBLY OF 5OP BLOCK
ASSEMBLY/CCD BOARD ASSEMBLY .............................. 1-11
1.6.1 Precautions ................................................................... 1-11
1.6.2 How to remove CCD board assembly and
CCD base assembly ...................................................... 1-11
1.6.3 How to assemble CCD base assembly and
CCD board assembly .................................................... 1-11
1.6.4 Replacement of Service Repair Parts ........................... 1-11
1.7 EMERGENCY DISPLAY .................................................... 1-12
1.8 SERVICE NOTE ................................................................. 1-13
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 COMPATIBILITY ADJUSTMENT ........................................ 2-20
2.8.1 Jig connector cable connection ..................................... 2-20
2.8.2 Tape pattern check ........................................................ 2-21

TABLE OF CONTENTS

Page Section
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 .......................................... 4-3
4.2 MAIN IF SCHEMATIC DIAGRAM ......................................... 4-5
4.3 SYSCON SCHEMATIC DIAGRAM ....................................... 4-7
4.4 D.CPU SCHEMATIC DIAGRAM ........................................... 4-9
4.5 MDA SCHEMATIC DIAGRAM ............................................ 4-11
4.6 AUDIO SCHEMATIC DIAGRAM ......................................... 4-13
4.7 DVMAIN SCHEMATIC DIAGRAM ...................................... 4-15
4.8 PRE/REC SCHEMATIC DIAGRAM .................................... 4-17
4.9 V OUT SCHEMATIC DIAGRAM ......................................... 4-19
4.10 DSP SCHEMATIC DIAGRAM .......................................... 4-21
4.11 MONI IF SCHEMATIC DIAGRAM .................................... 4-23
4.12 OP.DRV SCHEMATIC DIAGRAM .................................... 4-25
4.13 TG SCHEMATIC DIAGRAM ............................................ 4-27
4.14 REG SCHEMATIC DIAGRAM .......................................... 4-29
4.15 MONITOR SCHEMATIC DIAGRAM ................................. 4-31
4.16 LCD BL SCHEMATIC DIAGRAM ..................................... 4-33
4.17 CCD SCHEMATIC DIAGRAM .......................................... 4-35
4.18 JUNCTION SCHEMATIC DIAGRAM ............................... 4-36
4.19 JACK SCHEMATIC DIAGRAM ........................................ 4-37
4.20 B/W VF SCHEMATIC DIAGRAM ..................................... 4-39
4.21 MAIN CIRCUIT BOARD ................................................... 4-41
4.22 MONITOR CIRCUIT BOARD ........................................... 4-47
4.23 LCD BL CIRCUIT BOARD ............................................... 4-49
4.24 CCD, VF AND JUNCTION CIRCUIT BOARDS ............... 4-51
4.25 JACK CIRCUIT BOARD ................................................... 4-53
4.26 VOLTAGE CHARTS ......................................................... 4-55
4.27 POWER SYSTEM BLOCK DIAGRAM ............................. 4-57
4.28 VIDEO SYSTEM BLOCK DIAGRAM ............................... 4-59
4.29 REGULATOR SYSTEM BLOCK DIAGRAM .................... 4-63
5. PARTS LIST
5.1 PACKING AND ACCESSORY ASSEMBLY <M1> ............... 5-1
5.2 FINAL ASSEMBLY <M2> .................................................... 5-3
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
MONITOR BOARD ASSEMBLY <02> ..................................... 5-17
LCD BL BOARD ASSEMBLY <03> ......................................... 5-18
CCD BOARD ASSEMBLY <04> .............................................. 5-19
JUNCTION BOARD ASSEMBLY <05> ................................... 5-19
JACK BOARD ASSEMBLY <06> ............................................. 5-19
B/W VF BOARD ASSEMBLY <08> ......................................... 5-19
Title Page