DEC VT420 Manuals

DEC VT420 Manuals

Manuals and User Guides for DEC VT420. We have 1 DEC VT420 manual available for free PDF download: Service Manual

DEC VT420 Service Manual

DEC VT420 Service Manual (81 pages)

monochrome video terminal

Brand: DEC | Category: Touch terminals | Size: 0.92 MB

Table of Contents

Table of Contents
3
About this Guide

7
1 VT420 Models and Features

9
- VT420 Features
  9
- VT420 Model Differences
  11
2 Troubleshooting and Testing

12
3 Removing and Replacing Frus

30
- Top Cover
  30
- Crt/Yoke/Bezel Assembly
  34
- Terminal Board Assembly
  42
- Keyboard
  44
- CRT Disposal (Digital Service Representatives Only)
  46
4 Adjusting the Video Monitor

50
- Aligning the Screen
  50
- Set-Up Directory Screens
  51
- Screen Align Screens
  52
- Monitor Adjustments
  53
- Monitor Adjustment Controls
  53
- Before You Start
  54
- Displaying the Screen Test Pattern
  54
- Screen Test Pattern
  54
- Screen Control
  55
- Subcontrast
  55
- Rotation
  55
- Rotation and Centering Adjustment
  56
- Horizontal Width
  57
- Vertical Height
  57
- Vertical Linearity
  57
- Centering
  58
- Focus
  58
5 Using Set-Up

59
- Displaying Set-Up Screens
  59
- Set-Up Directory Screens
  60
- Changing Settings
  61
- Saving Set-Up Values
  61
- Recalling Set-Up Values
  61
Modems, Cables, and Documentation

62
- Modems
  62
- Cables
  62
- A.2 Cables
  62
- VT420 Cables
  64
- Related Documentation
  65
- A.3 Related Documentation
  65
VT420 Recommended Spares

66
- VT420 Models
  66
- B.1 VT420 Models
  66
- Recommended Spares
  68
- B.2 Recommended Spares
  68
- Keyboard Models
  69
- B.3 Keyboard Models
  69
Physical/Functional Diagrams

71
- VT420 North American Model
  72
- VT420 Worldwide Models
  74

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