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3300
Maintenance manual
Datapoint 3300 Maintenance Manual
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:
Instructions manual
(15 pages)
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Contents
Table of Contents
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Table of Contents
Table of Contents
Introduction
Diagram Symbolism
Schematic and Logic Diagrams
Figure 1-2. nor Gates
Figure 1-3. D Flip-Flop
Block Diagrams
Illustrations
Figure 1-4. JK Flip-Flop
Figure 1-5. Typical Waveforms
Figure 1-6. Keyboard and Answer-Back Cards
Figure 1-8. Control Logic and Mos Cards
Figure 1-9. Deflection Amplifier Card
Theory of Operation
Data Logic
Transmit Function
Receive Function
FIGURE 2-1. DATAPOINT 3300 (1 of 2)
Figure 2-1. Datapoint 3300
Keyboard
Figure 2-2. Typical Switch Circuit
Figure 2-3. Block Diagram, Keyboard
Figure 2-4. Schematic Diagram, Keyboard
Answer-Back
Programming the Answer - Back
Figure 2-5. Block Diagram, Answer-Back
Interface 1
Interface 2
Speed Buffer
Figure 2-6. Schematic Diagram
Figure 2-11. Schematic Diagram, Interface 2
Figure 2-12. Schematic Diagram
Mos
Figure 2-13. Block Diagram, Mos
Figure 2-14. Schematic Diagram, Mos
Deflection Amplifier
Figure 2-15. Dot Matrix Generation
Figure 2-16. Mos Locator
Figure 2-17. Character Display
Figure 2-18. Driver Connection
Logic Power Supply
Figure 2-19. Typical Power Supply Block Diagram
Deflection Power Supply
Figure 2-24. +40Vdc Circuit
High Voltage Power Supply
Control Logic
Horizontal Deflection Timing
Vertical Deflection Timing
Cursor Positioning
Carriage Return
Home up
Home down
Line Feed and Reverse
Roll up
Roll Advance
Roll down
Maintenance
Removal
Interface 2 Cards
Supply
Logic Power Supply
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