Atari 2600 Field Service Manual

TECH TIP jfi5
Floatina Ground on 2600
If the ground signal has a lot of noise on it (approx. 1 v.) check
continuity on pins
3, 6, and 10 on the 5101.
Left Paddle Failure
TECH TIP 86
Early production 2600 mother boards (Rev 8 and lower) had an artwork
error which was corrected by placing a dot over the trace.
This
insulates the trace from the casting and should always be on the board.
The dot is located under the 5200 upper left corner,
and
the trace should
be completely covered.
TECH TIP i1/7
Indy 500
If a unit works on everything except Indy 500 then pin 23 of the A202 is
probably shorted to
a data line.
TECH TIP #8
Power Jacks
All power jacks should be tested for a snug fit.
When the game is on,
lightly move power plug in a small circle, if the picture goes off,
replace the jack with a new one.
TECH TIP #9
Check all 9-Pin connectors (5202, 5203) for pushed or broken pins.
Replace all showing problems.

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