Atari CX - Page 95

COLOR TROUBLFHOOmG (Continued)
I
Is there a .4v p-p
signal on the base
of Q3?
1 Yes
I
Is there a 4v p-p
signal on the collector
of Q3?
I Yes
Defective R28 or open
Trace R28 to 43.
Is the signal present
at approximately
OV?
Defective R29.
t
I Yes
Is there a 3 volt p-p
signal between C9
Defective R30
or R31?
-
Mistuned R.F. Module
or defective:
1) R31
n
2) RF Module or open
R31 to R.F. Module
Pin 4.
Defective C9 or open
I C9 to the collector
CX5200 Field Service Manual
Changed by
ECN //0036
6/21 /83