Zenith ZVM-133-TC Manuals

Manuals and User Guides for Zenith ZVM-133-TC. We have 1 Zenith ZVM-133-TC manual available for free PDF download: Service Manual

Zenith ZVM-133-TC Service Manual

Zenith ZVM-133-TC Service Manual (71 pages)

Color Video Monitor with Touch Control

Brand: Zenith | Category: Monitor | Size: 7.37 MB

Table of Contents

Table of Contents
3
Chapter 1 Characteristics

5
Chapter 2 Installation

9
Circuit Descriptions

11
- Monitor
  11
  - RGB Gain Control Board
    11
    
    RGB Signal Input
    11
  - Main Board
    11
    
    Start-Up and Operating Voltages
    11
    
    Degaussing Circuit
    12
    
    Power Supplies
    12
    
    VDC Supply
    12
    
    RGB Drive and Cutoff Voltages
    13
    
    Vertical Sync
    13
    
    Horizontal Sync
    13
    
    Horizontal and Vertical Drive Outputs
    13
  - High Voltage and Horizontal Sweep Board
    14
  - Width Step Board
    14
  - Video Output Board
    14
- Touch Control
  14
  - Logic Board
    14
    
    Bipolar ± 12 VDC Power Supply
    14
    
    VDC Power Supply
    14
    
    Reset
    15
    
    Timing
    15
    
    Microprocessor
    15
    
    Main CPU Interface
    15
    
    Strobe Synchronization
    16
    
    Infrared LED Strobe Sequence
    16
    
    Infrared Detection
    17
    
    Digital Infrared Detection Automatic Gain Control
    17
    
    LED Drive
    17
Chapter 4 Servicing

19
- Safety and Service Guidelines
  19
- AC Leakage Test
  19
- Other Precautions
  20
- Suggested Tools and Supplies
  20
- Test Equipment
  20
- Troubleshooting
  21
- Monitor Fault Isolation Procedures
  22
- Monitor Alignments and Adjustments
  23
  - Main Board Adjustments
    25
    
    RGB Cutoff and G2 Adjustments
    25
    
    RGB Drive Adjustments
    25
    
    Vertical Height and Vertical Center Adjustments
    25
    
    Horizontal Width and Horizontal Center Adjustments
    25
    
    Horizontal Oscillator Adjustment
    26
    
    95 Volt Adjustment
    26
  - Sweep Assembly Adjustments
    26
    
    Focus Adjustment
    26
    
    Width Selection
    26
- Monitor Performance Tests
  27
  - Fill the Screen Test
    27
  - Color Bar Test
    27
  - Basic Program
    28
- Touch Control Sensitivity Adjustment
  28
- Touch Control Fault Isolation Procedure
  29
- Touch Control Alignment and Checkout
  32
  - Logic Board Dip Switch S101
    32
- Touch Control Performance Test
  33
- Cleaning Procedure
  34
- Servicing Diagrams
  34
  - Disassembly/Reassembly
    49
- Back Cover (10)
  49
- Top Cover (20)
  49
- Video Output Board (70)
  49
- Cabinet Front (150)
  49
- Primary Control Board (125)
  49
- RGB Gain Control Board (135)
  50
- Main Board (85)
  50
- High Voltage and Horizontal Sweep Assembly (77)
  50
- CRT Disassembly (105)
  50
- CRT Reassembly (105)
  51
- Logic Board (65)
  52
- LED Boards and Collector Plates
  53
  - Parts List
    55

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