Atari CX - Page 66

Warped Ragged Picture Troubleshooting
Manually set 5200 on
I
Is there a +5 p-p signal
on the leg of
R22
connected to Pin 4
Is R22 good?
I
A
Open between Pin 4 of
Is there a +5V p-p
-
A1 & R22 signal on Pin 4 at Ul?
Defective U1 or
no
Is there a +5V p-p
-
power or ground to Ul.
signal on Pin 5 of Ul?
-
Swapout:
2) U2
3) U3
Repair
Yes I
module or L 12 or open be
Replace
tween R22
& RF module
4
CX5200 Field Service Manual
b
***~O~*+*
If you are servicing a unit containing
PCB CA020 108, chip designators have
been changed from U to A.
w A
Open between U5
Pin 25 and Ul Pin 5.
Yes
Is there a +5V p-p
signal on Pin 25
of
U5?