Atari 2600

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Figure

7-5.

Keyboard

Wiring

Diagram

Figure

7-9.

Keyboard

Schematic

PIN

2

0'

PIN3

2600/260GA

Domestic

VCS

Table of Contents

Table of Contents5
Table of Contents6
Service Bulletins8
- Theory of Operation9
- Overview9
- 2600 Funcational Diagram9
- Game Console10
- Outer Casting10
- 2600 Game Console10
- Switchboard11
- Player Option Switches11
- Power Supply11
- RF Modulator11
- Motherboard12
TV Switchbox12
2600A G a M E Console13
- 2600A Board Layout14
- Silkscreens and Schematics16
- 2600/2600A 1C Pinouts17
2600 Motherboard Silkscreen18
- Channel 3 Switchboard19
- Channel 2 or 3 Switchboard19
- 2600 Channel 3 Switchboard Silkscreen20
2600 Channel 3 Switchboard Schematic21
2-3 Switchboard Silkscreen22
2600A Motherboard Silkscreen (Revs. 14 and 15)25
2600A Motherboard Silkscreen25
2600A Motherboard Silkscreen26
- Testing and Troubleshooting27
- Equipment Requirements27
- 2600 Model Modifications28
- Test Procedures and Methods28
- 2600 Trigger Circuitry with Static Modification29
- 2600 Static Modification Zener Diode30
- Location of Colores Dot over Trace30
3-4. 2600 Switchboard S T a T I C Modification31
- 2600A Model Modifications32
- Testing with the Diagnostic Test Cartridge33
Switch Initialization Positions33
- Ram Test34
- Defective RAM Patterns34
- Color Bar Test35
Color Bars Screen35
- Gray Bar Test36
- Gray Bars Screen36
Diagnostic Matrix Screen (Shorting Plugs OUT)37
- Audio Tones Test39
- Audio Tone Test Screens39
- Paddle Control Lines Test40
2600 Motherboard Schematic41
- 2600A Motherboard Schematic42
- 2600 Diagnostic Flowchart44
- Swap out Procedures44
- Gray Bars Test Procedure48
- Color Bars Test Procedure49
- Defective Switch Troubleshooting Procedure50
- Black or Solid Colored Screen Troubleshooting52
- Bad/No Color, Bad/No Sound Switchboard56
- Gray Bars Troubleshooting Procedure57
- Colored Screen Troubleshooting Procedure Switchboard59
- Snowy Screen Troubleshooting Procedure, Switchboard61
- Matrix Test Procedure63
- Color Troubleshooting Procedure, Motherboard64
- Defective Matrix Troubleshooting Procedure66
- Audio Test Procedure67
- Trigger Line Troubleshooting Procedure70
- Audio Troubleshooting Procedure, Motherboard71
- Cartridge Test Procedure73
- Burn-In Procedure74
- Snowy Screen Troubleshooting Procedure76
- Paddle Lines Test77
4-1. Switch Initialization Positions78
Color Bars Screen79
Defective RAM Patterns80
Diagnostic Matrix Screen83
RC Waveforms87
- Data Lines88
- Address Lines88
- Getting Started88
- Signal Tracing Cartridge Procedure88
STC Address Line Waveforms89
STC Data Line Waveforms89
- Connected Pins on Motherboard90
- Symptom Checklist91
- Logic Failures92
- Video Failures92
- Color Failures93
- Audio Failures93
- Controller Failures94
- Other Failures94
- 2600A Diagnostic Flowchart98
- Bars Test Procedure103
And up103
Defective Switcn Troubleshooting105
2600A (Revs. 1-1 3 ) Static Modifications107
Game Controllers127
Joystick (X-Y) Controller127
- Joystick Schematic128
- Joystick Check129
Paddle con Troller130
- Paddle Controller Check131
- Paddle Controller Schemaric131
Driving Controller132
- Driving Controller Check133
- Driving Controller Schematic133
Keyboard Controller134
- Keyboard Wiring Diagram135
- Keyboard Schematic135
- Keyboard Controller Check136
- Parts List137
- Index145
- Technical Tips146
- Floating Ground147
- Left Paddle Failure147
- Power Jacks147
- 9-Pins147
- Solder Check148
- Hex Buffers148
- Crooked Switches148
- Reassembly149
- Excess Lead Length149
- Regulator149
- Blanking Resistor152
- Switch Shorting153

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