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ZVM-136
Zenith ZVM-136 Manuals
Manuals and User Guides for Zenith ZVM-136. We have
1
Zenith ZVM-136 manual available for free PDF download: Service Manual
Zenith ZVM-136 Service Manual (89 pages)
Color Video Monitors
Brand:
Zenith
| Category:
Monitor
| Size: 7.99 MB
Table of Contents
Table of Contents
3
Characteristics
5
Description
5
Controls, Indicators, and Connectors
5
And ZVM-135
5
Monitor Front View
5
And ZVM-136
6
ZVM-131 Specifications
7
Specifications
8
ZVM-135 Specifications
9
Installation
10
ZVM-131 and ZVM-135 Installation
10
Composite Signal
10
RGB Signal
10
ZVM-133 and ZVM-136 Installation
13
Circuit Descriptions
14
ZVM-131 and ZVM-135 Circuit Boards
14
Main Board
14
Start-Up and Operating Voltages
14
Degaussing Circuit
14
Power Supplies
14
150 VDC Supply
14
VDC Supply
15
RGB Drive and Cutoff Voltages
15
Composite Drive
15
Composite Vertical Sync
15
Composite Horizontal Sync
16
Horizontal and Vertical Drive Outputs
16
Audiolvideo Sync Board
16
High Voltage and Horizontal Sweep Board
16
Width Step Board
16
Video Output Board
16
ZVM-133 and ZVM-136 Circuit Boards
17
RGB Gain Control Board
17
RGB Input Signal
17
RGBI Input
17
Servicing
18
Safety and Service Guidelines
18
AC Leakage Test
18
And ZVM-135 Controls and Connectors. 11 3. ZVM-133 and ZVM-136 Controls and Connectors. 12 4. AC Leakage Voltmeter Circuit
18
Other Precautions
19
Suggested Tools and Supplies
19
Test Equipment
19
Troubleshooting
19
General Troubleshooting
20
Fault Isolation Procedures
20
Alignments and Adjustments
21
Main Board Adjustments
21
RGB Cutoff and G2 Adjustments
21
RGB Drive Adjustments
21
Vertical Center and Vertical Height Adjustments
21
Horizontal Center and Width Adjustments
21
Main Board Adjustment
22
High Voltage and Sweep Boardlwidth Step Board Ad- Justments
23
Horizontal Oscillator Adjustment
24
Volt Adjustment
24
Sweep Assembly Adjustments
24
Focus Adjustment
24
Width Selection
24
Audionideo Sync Board Adjustments
24
Chroma Null Phase Adjustment
24
BLUE and RED Cutoff Adjustments
24
Audionideo Sync Board Adjustments
25
Cleaning Procedure
26
Performance Tests
26
Fill the Screen Test
26
Color Bar Test
26
BASIC Program
27
BASIC Color Bar Program
27
Servicing Diagrams
27
Block Diagram ZVM-131 and ZVM-135
29
Block Diagram ZVM-133 and ZVM-136
30
Audionideo Sync Board Component Location
31
Audionideo Sync Board Waveforms
32
Audionideo Sync Board Schematic
33
RGB Gain Control Board Component Location . 39 14. RGB Gain Control Board Waveforms
39
RGB Gain Control Board Schematic
39
Main Board Component Location
40
Main Board Waveforms
40
Main Board Schematic
41
High Voltage and Horizontal Sweep Board Component Location
42
High Voltage and Horizontal Sweep Board Waveforms
42
High Voltage and Horizontal Sweep Board Schematic
43
Width Step Board Component Location
44
Width Step Board Schematic
44
High Voltage Power Supply Component Location. 44 25. Video Output Board (High-Resolution) Component Lo- Cation
44
Video Output Board (High-Resolution) Waveforms
45
Video Output Board (High-Resolution) Schematic. 45 28. Video Output Board (Medium-Resolution) Component Location
46
Video Output Board (Medium-Resolution) Schematics
46
Primary Control Board A-12800 Component Location
47
Primary Control Board A-12800 Schematic
47
Primary Control Board Schematic ZVM-131-135. 47 33. Secondary Assembly A-9522 Component Location
48
Secondary Assembly A-9522 Schematic
48
Disassembly/Reassembly
49
Back Cover
49
Top Cover
49
Video Output Board
49
Input Panel
49
High Voltage and Horizontal Sweep Assembly
49
Crt
49
Primary Control Board
49
Audiolvideo Sync Board
50
Main Board
50
Speaker
50
Secondary Control Assembly
50
RGB Gain Control Board (ZVM-133 and ZVM-136)
50
Parts List
51
Monitor Major Assemblies
52
Cable Assemblies
53
Main Board
54
High Voltage and Horizontal Sweep Board
67
Width Step Board
71
Horizontal Output Transistor and Bracket Assembly
71
High Voltage Power Supply Board
71
High Resolution Video Output Board
72
Medium Resolution Video Output Board
73
RGB Gain Control Board
74
Audionideo Sync Board
75
Secondary Control Assembly
88
Monitor Exploded View
89
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