Atari 2600 Field Service Manual

WrrON
CGNTROL I
PIN 4
PIN 5
Figure 7-4. Paddle Controller Schemaric
P,+DDLE CSrU'TXOLLER CHECK
Eaui~rnent Yeeded
T.V. Set
0 Known good VCS unit
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Procedure
1. Check for cosmetic damage.
2. Plug in cartridge and plug controllers to be tested into the left player port.
3. Press game reset.
L. Press the button on one of the controllers. A air of numbers shouid appear.
5. When you turn the knob, one set of numbers should 70 between 20 and 2QO by
steps of 20. The numbers should not advance reater than a step of 2'3.
6. Repeat steps 3, 4, Jc 5 for the other controller.

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