Zenith Data Systems ZVM-124 Video Monitor Manuals

Manuals and User Guides for Zenith Data Systems ZVM-124 Video Monitor. We have 1 Zenith Data Systems ZVM-124 Video Monitor manual available for free PDF download: Service Manual

Zenith Data Systems ZVM-124 Service Manual

Zenith Data Systems ZVM-124 Service Manual (37 pages)

Monochrome

Brand: Zenith Data Systems | Category: Monitor | Size: 4.81 MB

Table of Contents

Table of Contents
2
Description and Specifications
4
List of Tools, Test Equipment
4
- Tools
  4
- Test Equipment
  4
- Supplies
  4
Specifications
5
Installation
6
Ideo Moni Tor
6
Voltage Selection
7
Connections
9
Signal Cable Interface
9
Signal Cable Connector J201
9
Operation
10
Initial Setup of the Operating
10
- Controls and Monitor
  10
Theory of Operation
12
- Video and Highlight Inputs
  12
- Vertical Sync Input
  12
  - Vertical Blanking
    12
- Horizontal Sync Input
  13
- Figures
  13
Circuit Description
14
Power Supply
14
Video and Highlight
14
- Driver Circuitry
  14
Horizontal Circuitry
15
- Horizontal Driver
  15
Vertical Sweep Circuit
16
Schematic
17
Disassem Bly
19
Back Cover Removal
19
Power Transformer Assembly Removal
19
Fuse Board Removal
20
CRT Socket Board Removal
20
Main Circuit Board Removal
21
Control Panel Removal
22
Control Panel Assembly
22
Power Switch Assembly Removal
22
Control Panel Assembly Removal
22
Cathode-Ray Tube Removal
22
Preparing the Cathode-Ray
23
CRT Yoke Preparation
23
Safety and Service Guidelines
24
- AC Leakage Test
  24
- Other Precautions
  24
AC Leakage Test Arrangement
24
Servicing Instruction
24
Internal Adjustments
25
- CRT Yoke Adjustment
  26
Cleaning Procedures
25
Adjustments
25
- Focus Adjustment
  25
- B+ Voltage Adjustment
  25
Yoke Adjustment
26
General Troubleshooting
26
Troubleshooting
26
Waveform at Base of Q601, Vertical Oscillator
27
Waveform at Emitter of Q601, Vertical Oscillator
27
Waveform at Collector of Q601, Vertical Oscillator
27
- CRT Socket Board Troubleshooting
  28
Waveform at Emitter of Q606
28
- Vertical Output
  28
Waveform at Collector of Q501
28
Waveform at Base of Q501
28
- Horizontal Driver
  28
- Video Input
  28
Waveform at Pin 2 of VX201, Cathode of the CRT
28
- Power Supply Troubleshooting
  29
Power Switch Assembly
30
Reassembly
30
Control Panel Assembly Installation
30
Power Switch Assembly Installation
30
Main Circuit Board Installation
30
- Installation
  30
Main Circuit Board Installation
31
Fuse Board Installation
31
Power Transformer Assembly Installation
32
Installing the CRT in the Cabinet
32
Yoke Leads
32
CRT Socket and High Voltage Anode Lead
33
CRT Socket Installation
33
Back Cover Installation
33
Exploded View
34
Major Assemblies
34
Component Location, Circuit Boards
35
- Component Parts List
  36

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