Atari 2600

Gray Bars Troubleshooting Procedure
Isthere a 3-5v
p-p signai on the
A203 side of R222,
r R223.R224?
I
Do all of pins 2,
12, and 15 on A203
have
a signai present?
Yes
-
Yes
-
Ohm meter. Replace any
failed or of f-value
resistors.
Pg. b45
There is an open line
between
A203 and the
resistors. Fix it.
Pg. 4-5
I
I
m
Check inputs of Yes
A203 (pins 3,11,14). Replace A203.
Does each have a
signal present?
1
I
Do all of pins 5,7,8
on A20 1 have a signal
present?
Check for open
'll linesbetwen A201
and A203. Fix.
I
Pg. b15
Pg. 4-2
2600/2600A Domestic VCS