Atari CX - Page 61

Black Screen Troubleshootinq (Cont.)
4 7
Is there a 4V p-p
signal on Pin 15 of
U l8-U25?
J w I:
b
No .
I
Swapout
1) U17
2) Ul4 or defective
R133,C140,R68
& C55
CX 5200 Field Service Manual
If you are servicing a unit containing
PCB CA020108, chip designators have
been changed from
U to A.