Atari 2600

Gray Bars Troubleshooting Procedure (Continued)
Make sure 1121 8,
R219, R220 have
+Iv connected to
top side.
I
Picture Now Yes
OK? (See
Figure 4-4)
Check RZl8,RZl9,
RZ2O
for proper
Inspect traces around
LM lines for shorts
or opens.
I
A
& J
Go to matrix
test.
'and then A202.
I
I
Is picture now OK?
(See Figure 4-4)
L
I
J
Is picture now OK? Yes
(See Figure 4-41
Yes
Pg. 4-20
2600/2600A Domestic VCS