Atari CX 5200 Field Service Manual page 61

Black Screen Troubleshooting (Cont.)
Is there approximately
l l -1 3V on the input of
Is there approximately
V on point
o
schematic?
Defective
1 ) Q6
2) R57
Repai r
CX 5200 Field Service Manual
B l
Yes
VR l ?
No
No
Q)
of the
Yes
3 ) R56
If y o u are servicing a unit containing
P C B CA020 1 08 , chip designators have
been changed from U to A.
4-4
Defective VR 1 or
output short to
ground ( possible
chip)
Defective J 1 or open
(i)
between point of
(V
VR2 point of V R I
&:
( with cartridge in).
** * NOTE** *