Atari 2600 Field Service Manual page 109

2600A Snowy Screen Troubleshooting Procedure
4
pen between 3201 and
i n
7.5 unrequiated on 3201? put A203. Repair
b
I
?
1
J
+
yo
1s - 5 v present
on ourpur 1 s there
+jv
on in
b
kr
~ 2 0 5
defective?
-
of .\203? RF module!
b h
No
- 5 v
h o r r e d ro qround? Repair
Swawut
1) ,4201
21 A200
3) A202
Y e s
b
b
R e p l a c e RF module or
,
Repair
bad R F
cable?
RepLace L205.
No
J
I D
A
L
1
I
Jpen b e w e e n A203
ourput and RF moaule
pin
4.
Yes
.Anv
modulation?
Defective 220 1.
A
i
I
i
Replace
u
b
Pg. 6-2