Circuit Description - Tektronix 4010 Maintenance Manual

Circuit Description-4010 Maintenance
CIRCUIT DESCRIPTION
CONTENTS
General Information
Introduction
Diagrams and Circuit Description Information
Dictionary of Line Titles
General
Wiring Information
Examples of Signal Tracing
Wire List
Basic Concepts of Computer/Terminal Communications
General
Computer
Terminal
Dispaly Unit
Keyboard
Terminal Control Logic
Communication Link
Direct
Modem (Telephone Hook·up)
Data Flow Block Diagram Description
General
Alphanumeric Mode (Alpha)
Graphic Plot Mode (Graph)
Graphic Input Mode (GIN)
Alpha Mode
Keyboard Entered Data
Computer Entered Data
Graphic Plot Mode
General
Graphic Input Mode (GIN)
General
Alpha Mode Block Diagram Description
General
Power Initialization
Processing Control Characters
Processing Alphanumeric Characters
View Signal Operation
Alpha Cursor Suppress
Character Generator Inhibit
X Register
Y Register and Top·of·Page Detect Operation
Margin Shifter Operation
Digital to Analog Conversion
Graphic Modes Block Diagram
General
Graphic Plot Mode Description
Graphic Mode Initialization
Alpha Circuits Inhibited
Data Loading
Vector Enabling
Return to Alpha
Graphic Input Mode Description
Graphic Input Initialization
Cross·Hair Generator
Foldover
Keyboard Description
TC·1 Block Diagram Description
Introduction
@
Input/Decoding
General
Home
Column Decoder
Control Character Decoder
Escape
Page·Curse-Make Copy·lnquire
Graf Flip·Flop (F/F)
Graphic Byte Decoder
Data Enable Gate
Rubout Suppressor
Page
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6·5
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CONTENTS
Format Effector
General
Block Description
System Clock
Pulse Shaper
Alpha Cursor Counter, Direction Latch,
and Direction Enable Gates
Terminal Busy
Automatic Carriage Return/Line Feed
Vector/Bell Enable
ZAxis
Bell
View/Hold
Cursor Refresher
Defocus
Character Generator
General
Selecting the ROM
Presetting the Character Generator
Scanning the Character Matrix
Resetting the Character Generator
Echoplex Suppress
TC·2 Block Diagram Description
Introduction
Block Description
X and Y Data Latches
X Register (Counter)
Y Register (Counter) and Top·of.Page Detect
Terminal Busy
Margin Shifter
X and Y Digital to Analog (D/A) Circuits
X and Y Filters
Data Multiplexer
Strobe Logic
Crosshair Generator
Foldover
Multiplexer Control and Digitization
Display Unit
Display Unit Block Diagram Description
High·Voltage and Z Axis Circuits
Block Diagram Description
High·Voltage Oscillator
High-Voltage Supply
Control·Grid Supply
Intensity Control Circuit
Z Signal Amplifier Circuit
Focus Circuit
Miscellaneous Components
Deflection Amplifier Description
General
Block Diagram Description
Detailed Description
Storage Circuits
Block Diagram Description
Detailed Description
Hard Copy Circuits
Block Diagram Description
Detailed Circuit Description
Low·Voltage Power Supply
Regulated Supplies
Heavy Duty Power Supply
Line Voltage Straps
General Information
Regulated Supplies
+15 Volt
+5 Volt
-15 Volt
Flood Gun Filaments
Page
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