Atari CX 5200 Field Service Manual page 89

BLACK SCREEN TROUBLESHOOTING (Continued)
Are the following
vo ltages on the p in s
o f the transistor:
Base
Em itter
Collector
CX5200 Field Service Manual
ill.
m.
.
3.5V 3.5V
No Rep lace
4.3V 4.3V
transistor(s).
1 .2 V I V
Yes
Replace Vi .
Does unit
No
functio n ?
Y e s
4 A-5
Are voltages
correct?
No
Check for open,
shorted or wrong
value component in
clock circuit.
Repair or Replace
F
Y e s
Changed by
ECN 110036
6 / 2 1 /83