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Manuals
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TeleVideo Manuals
Desktop
9320
Maintenance manual
TeleVideo 9320 Maintenance Manual
Televideo 9320 video display terminal
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
1 Introduction
Overview
Front View of the 9320
Description of the Modules
Logic Circuitry
Video Circuitry
Power Supply Circuitry
Rear View of the 9320
Keyboard
Rs-423 Signal Assignments
Main Port Assignments for Decconnect
Printer Port Assignments for Decconnect
Specifications
Physical
Electrical
Display
Keyboard
Keyboard Layout
Environmental
CRT Controller Format
PC Board
2 Theory of Operation
Introduction
Block Diagram of the 9320
Detailed Descriptions
System Clocking
The Gate Array
CPU System and Control
Memory Map for the 9320
Character Generation
Video Display Generation
Communications
3 Maintenance
Visual Inspection
Terminal and Keyboard Exterior
Terminal and Keyboard Interior
Tests and Adjustments
Height and Width
Linearity
Brightness
Trapezoidal Distortion
Concave and Convex Distortion
Making Adjustments
Troubleshooting
Troubleshooting Guide
Opening the Case
Discharging Voltages
Removing the Circuit Board
Replacing the Circuit Board
Removing the Circuit Board
Closing the Terminal Case
Opening the Keyboard Case and Removing the Keyboard Circuit
Replacing the Keyboard Circuit and Closing the Keyboard Case
4 Parts and Service
Ordering Spare Parts
Service Information
Return Procedure
Regional Sales Offices
5 Schematics
A Service Bulletins
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