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Monitor
4023
Service manual
Tektronix 4023 Service Manual
Computer display terminal
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Also See for 4023
:
Instruction manual
(82 pages)
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Instruction manual
(76 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Installation and Operation
Introduction
Installation
General
Mounting the Terminal
Circuitry Access
Selecting Strappable Options
AC Power Sources and Requirements
Voltage, Current, and Power Requirements
Spare Switch Connections
Spare Indicator Connection
Rear Panel Connectors
Control Descriptions
General
Display and Power Controls
Rear Panel Control
Console Controls and Indicators
The Keyboard
Function Pad Controls
Operating Modes
General
Direct Entry
Buffer Entry
Enter Key Entry
Send Key Entry
Use of Message Separators
Buffer Form Fill-Out Entry
Nul Suppression
Characteristics
Introduction
Alphabetic Listing
Tables
Accessories
Code Effect
Data Coding
Data Transfer
Display Specifications
Editing Specifications
Environmental Specifications
Field Attribute Codes
Power Supply Specifications
Reset Key Functions
Strap Options
Timing Specifications
Maintenance
General Information
Introduction
Desk Mounting
Mounting the Terminal on the Optional Pedestal
Servicing Procedure
Soldered Options
Troubleshooting Information
Troubleshooting Procedure
Recommended Troubleshooting Equipment
Disassembly and Assembly
Access to the Display Unit Circuitry
Keyboard Information
Circuit Card Information
Rear Assembly Removal
Monitor Assembly Information
Monitor Assembly Removal
CRT Removal
Monitor (CRT) Installation
Deflection Amplifier and High Voltage Board
High Voltage Transformer Removal
Silicon Grease
Power Transformer Information
Performance Check/Adjustment
Performance Check
General
Performance Check Procedure
Adjustment
Introduction
Equipment Required
Adjustment Procedure
Preliminary
Remove the Terminal Cover
Detailed Procedure
Electrical Parts List
Theory of Operation
Introduction
General Descriptions
Keyboard
Timing Card
Keyboard Interface Card
Control Card
Cursor Card
RAM Card
Edit Card
Low Voltage Power Supply
Display Circuits
Detailed Description
Keyboard Description
General
Coded Character Generation
Function Pad Operation
Miscellaneous Functions
Timing Card
Timing
Character Generation
Retrace Times
Circuit Functions
Miscellaneous
Keyboard Interface Card
Inputting Keyboard Data
Control Character Decoders
Keygate Generator with Repeat
TSTROBE and CSTROBE Control
Move Cursor Timing
Move Cursor Gates
Carriage Return and Line Feed Circuits
Clear Page and Erase Input Circuits
Page Full Circuit
Wrap-Around Circuit
THEORY of OPERATION (Cont)
Control Card
General Circuitry Information 6·14
Miscellaneous Circuits and Operation 6·15
Explanation of Transmission Control 6·16
Cursor Card 6·20
General 6·20
Cursor Register Operation 6·20
Display Register Operation 6·20
Edit Effects on the Registers 6·21
Cursor Addressing and Reading 6·23
Miscellaneous Circuits 6·24
Summary of Register Operations 6·24
Random Access Memory (RAM) Card 6·26
Introduction 6·26
Operation of Major Circuits 6·26
Sense Amps 6·27
Miscellaneous Circuits 6·27
Edit Card 6·28
Introduction 6·28
Edit Circuits 6·28
Read Cursor Position 6·29
Cursor Positioning 6·30
Character Decoding Circuit 6·30
Bit 8 and Bit 9 Set 6·30
Tab/Backtab Circuits 6·30
Display Circuits 6·31
General 6·31
Vertical 6·31
Horizontal 6·31
Video 6·32
Brightness 6·32
Focus 6·32
Power Supply 6·33
15·Volt Supply 6·33
Wiring and Signal Information
Wiring 6·34
How to Use the Wiring Information 6·34
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4023
COMPUTER DISPLAY
TERMINAL
SERVICE MANUAL
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