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AV-20820
JVC AV-20820 Manuals
Manuals and User Guides for JVC AV-20820. We have
1
JVC AV-20820 manual available for free PDF download: Service Manual
JVC AV-20820 Service Manual (53 pages)
Brand:
JVC
| Category:
TV
| Size: 3 MB
Table of Contents
Contents
1
Specifications
2
Safety Precautions
3
Isolation Check
3
Leakage Current Check
3
High Voltage Hold down Circuit Check
3
Features
4
Difference List of Main Parts
4
Operating Instructions
5
Front Panel Diagram
5
Rear Panel Diagram
5
Remote Control
5
Specific Service Instructions
6
Disassembly
6
Removing the Rear Cover
6
Removing the Main PW Board
6
Memory IC Replacement
8
Memory IC
8
Power off
8
Power on
8
System Constant Setting
9
User Setting Values
9
Service Adjustments
10
Adjustment Preparation
10
Testers & Tools
10
Adjustment Items
10
Basic Operation of Service Menu
11
Service Menu Items
11
Basic Operations of the Service Menu
11
How to Enter the Service Menu
11
Setting Method
12
Releasing Service Menu
12
Initial Setting Value of Service Menu
13
Picture Mode
13
Game Mode
13
Sound Mode
14
Low Light Mode
14
High Light Mode
14
RF AFC CHK Mode
14
Adjustments
15
B1 Voltage Check
15
Adjustment of Video/Def. Circuit
15
White Balance Adjustment
17
Adjustment of MTS Circuit
18
Sub Bright Adjustment
18
Sub Contrast Adjustment
18
Sub Color Adjustment
18
MTS Sap VCO Adjustment
19
MTS Filter Check
19
MTS Separation Adjustment
19
Purity, Convergence
20
Purity Adjustment
20
Static Convergence Adjustment
21
Dynamic Convergence Adjustment
21
How to Check the High Voltage Hold down Circuit
22
High Voltage Hold down Circuit
22
Checking of the High Voltage Hold down Circuit
22
Self Check Functions
23
Self Check Indicating Function
23
Contents of Self Check
23
Replacement of Chip Component
24
Soldering Iron
24
Replacement Steps
24
How to Remove Chip Parts
24
Standard Circuit Diagram
25
Note on Using Circuit Diagrams
25
Specified Voltage and Waveform Values
25
Indications on the Circuit Diagram
25
Semiconductor Shapes
26
Transistors
26
Channel Chart
27
Main Parts Location and Alignment Location
29
Main PWB Ass'y
29
CRT Socket PWB Ass'y
29
Wiring List
30
Block Diagram
31
Circuit Diagrams and PWB Patterns
33
Main PWB, CRT Socket PWB Circuit Diagrams
33
Main PWB, CRT Socket PWB Patterns
37
Remote Control Transmitter Circuit Diagram
39
Key Function
39
Parts List
41
Caution
41
Abbreviations
41
Tolerances
41
How to Express Parts Numbers of Standard Parts
42
Resistor
42
Capacitor
42
Exploded View Parts List
44
Exploded View
45
Printed Wiring Board Parts List
46
Packing
50
Packing Parts List
50
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