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VT50
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Digital Equipment VT50 Service Manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Introdt:ction
Purpose
1.2 Reference Documentation
Troubleshooting
Troubleshooting Philosophy
Troubleshooting Procedures Index
Power on Troubleshooting Procedure
Character Display Troubleshooting Procedure
Display Troubleshooting Procedure
Appendix B Replaceable :Dules
Jumper W7 Location
ROM Chip Locations
Copier Option Troubleshooting Procedure
Printer Interface Option Troubleshooting
Procedure
Printer Interface Option Baud Rate Selection
Removal and Replacement Guide
Assembly
Removal and Replacement
Removing and Replacing the EIA or
Rna Adapter Card
Removing and Replacing the EIA Rna
Removing and Replacing the Power Supply/Monitor Assembly Heat Sink Panel
Monitor Assembly Heat Sink Panel
Removing and Replacing the Base Assembly
Removing and Replacing the Base
Removing and Replacing the Character Generator
Interface Option
Removing and Replacing the Character
DP Modules
Removing and Replacing the RUT and DP Modules
Removing and Replacing the Anti-Static
Ground Shield
Removing and Replacing the Keyboard
Removing and Replacing the Power Supply/Monitor Assembly
Discharging the CRT and Power Supply
Capacitors
Power Supply/Monitor Assembly Capacitor Connections
Removing and Replacing the CRT Assembly
Board Assembly
Assembly
Removing and Replacing the CRT Yoke
Copier Option
Removing and Replacing the Electrolytic
Removing and Replacing the Transformer Assembly
Copier Power and Signal Connectors
Transformer Assembly Wiring Diagram
Alignment and Adjustments
CRT Yoke Alignment
Yoke Alignment
Display Adjustments
Acceptance Test Procedures
5.2 Terminal Tests
Copier Option Tests
5.4 Printer Interface Option Tests
Function and Baud Rate Switch Settings
Power ON/OFF Switch and Intensity Control
Pmk04 Operation
Appendix A Care and Handling of Cathode Ray Tubes
Copier Option
VT52 Replaceable Modules and Assemblies/Parts List
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VT50/VT52
Pocket Service Guide
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Table of Contents
Troubleshooting
TROUBLESHOOTING
10
Troubleshooting Procedures Index
11
Power on Troubleshooting Procedure
14
Character Display Troubleshooting Procedure
16
Display Troubleshooting Procedure
17
Copier Option Troubleshooting Procedure
19
Printer Interface Option Troubleshooting
20
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