Atari CX - Page 70

Pot Control Line Troubleshooting
I
Manually set the 5200
to the Pokey Adjust
test.
I
Can +CAV on
defective port be
adjusted between
4-6.4V by turning
R 1 32?
I Swapout I
I
If you are servicing a unit containing
L
PCB CA020 108, chip designators have
Yes been changed from U to A.
Do pot lines pass?
I
From Error Code on
chart
below determine
which line
is defective
& check the compo-
nents for correct
value.
-
a
m
No Open or shorted
Do POT Lines pass?
trace.
Repair
POT Line Pokey Adjust Port and Pokey U7
Error Code Failure Pin li
Pin # CAP #l CAP # 2 Resistor
22. HOR 1
23 VERT 1
24 HOR 2
25 VERT 2
26 HOR 3
27 VERT 3
- 28 HOR 4
29 VERT 4
CX 5200 Field Service Manual
R106
R110
R107
Rlll
R108
R112
R 109
R113