Atari 2600 Field Service Manual page 58

Gray Bars Troubleshooting Procedure (Continued)
Make sure 1 1 2 1 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
I s 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