Atari CX - Page 144

CURSOR UPfDOWN TROUBLESHOOTING (Cont.)
Is the slightly rounded
square wave
at pin 9
& pin 11 of A1 mini-
mum of 450MV p-p?
(Maximum.'2.5V).
No
Return to beginning of Test Sequence
Replace
Ul.
i t
I
CX5200 Field Service Manual
3
Is there approx. No
400MV at pins 8 &
.
Is C10 shorted or
are R30, R31 open?
I
10 of Al?
b J
b
I No I
Replace Al.
Yes
Swapout
1) A1
r
Replace defective
component.