Atari 2600 Field Service Manual

KEYBOARD CONTROLLER CHECK
Equipment Needed
T.V. set
Known good VCS unit
Brain Games cartridge
a One good keyboard controller
Procedure
1. Check for cosmetic damage.
2. Plug in Brain Games cartridge and plug the known good keyboard into the
right -hand plug.
3. Plug the controller to be tested into the left-hand plug.
4. Press game select until game 819 appears and press game reset.
5. If an audio tone sounds, the controller is defective.
6. Starting with the "I" key, press the keys in the following order: 1, 2, 3, 4, 5,
6? 7, 3, 9, *, 0, I/. Each key should generate a tone lower than the key before
it.
7. Test completed.
2600/26GOA Domestic VCS

Atari 2600 Specifications

General

Manufacturer	Atari, Inc.
Release Date	September 11, 1977
CPU	MOS Technology 6507
CPU Speed	1.19 MHz
RAM	128 bytes
Graphics	Television Interface Adaptor (TIA)
Media	ROM cartridge
Successor	Atari 5200
Colors	128
Sound	2 channels
ROM	4 KB
Controller Input	Joystick