JVC GR-DVL320A Page 19 Service Manual Download

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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 ..................................................... 1-7

1.4.1 Disassembly/assembly of monitor assembly

(for 2.5”-type LCD) .......................................................... 1-7

1.4.2 Disassembly/assembly of hinge assembly

(for 2.5”-type LCD) .......................................................... 1-7

1.5

E. VF ASSEMBLY .............................................................. 1-8

1.5.1 Disassembly/assembly of E.VF assembly

(for the B/W VF) .............................................................. 1-8

1.6 DISASSEMBLY/ASSEMBLY OF

OP BLOCK

ASSEMBLY/CCD BOARD ASSEMBLY ................................. 1-9

1.6.1 Precautions ..................................................................... 1-9
1.6.2 How to remove CCD board assembly and CCD

base assembly ................................................................ 1-9

1.6.3 How to assemble CCD base assembly and

CCD board assembly ...................................................... 1-9

1.6.4 Replacement of service repair parts ............................... 1-9

1.7 EMERGENCY DISPLAY ..................................................... 1-10
1.8 SERVICE NOTE .................................................................. 1-11

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

2.8.1 Tape pattern check ....................................................... 2-21

TABLE OF CONTENTS

Section

Title

Page

Section

Title

Page

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 PC IF SCHEMATIC DIAGRAM ................................................... 4-9
4.5 DECKCPU SCHEMATIC DIAGRAM ......................................... 4-11
4.6 MDA SCHEMATIC DIAGRAM .................................................. 4-13
4.7 AUDIO SCHEMATIC DIAGRAM ............................................... 4-15
4.8 DVMAIN SCHEMATIC DIAGRAM ............................................ 4-17
4.9 PRE/REC SCHEMATIC DIAGRAM .......................................... 4-19
4.10 V OUT SCHEMATIC DIAGRAM ............................................. 4-21
4.11 CAM.DSP 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 REAR SCHEMATIC DIAGRAM .............................................. 4-38
4.21 B/W VF SCHEMATIC DIAGRAM ........................................... 4-39
4.22 MAIN CIRCUIT BOARD ......................................................... 4-41
4.23 MONITOR CIRCUIT BOARD ................................................. 4-47
4.24 LCD BL CIRCUIT BOARD ...................................................... 4-49
4.25 CCD AND JUNCTION CIRCUIT BOARDS ............................ 4-51
4.26 JACK AND VF CIRCUIT BOARDS ........................................ 4-53
4.27 REAR CIRCUIT BOARD ........................................................ 4-55
4.28 VOLTAGE CHARTS ............................................................... 4-57
4.29 POWER SYSTEM BLOCK DIAGRAM ................................... 4-61
4.30 VIDEO SYSTEM BLOCK DIAGRAM ...................................... 4-63
4.31 REGULATOR SYSTEM BLOCK DIAGRAM .......................... 4-67

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> ......................................... 5-19
CCD BOARD ASSEMBLY <04> .............................................. 5-19
JUNCTION BOARD ASSEMBLY <05> ................................... 5-19
JACK BOARD ASSEMBLY <06> ............................................. 5-19
REAR BOARD ASSEMBLY <07> ............................................ 5-19
B/W VF BOARD ASSEMBLY <08> ......................................... 5-20

The following table lists the differing points between Models GR-DVL155EG,
GR-DVL160EG/EK and GR-DVL167EG/EK in this serise.

GR-DVL155EG

GR-DVL160EG

GR-DVL160EK

GR-DVL167EG

GR-DVL167EK

VIDEO LIGHT

NOT USED

USED

DV INPUT

NOT USED

USED