Atari CX - Page 97

AUDIO TROUBLESHOOTING
Is there t5VDC on
-f the collector of Q4?
Adjust
Can LI be adjusted to
give a
4.5 Mhz reading?
L
1 Yes
Is there
a 4.5 Mhz
signal on the emitter
of Q4?
I
Replace:
1) C13
2) C14
3) Q4
4) CR8
5) CR7
+If this is your second time at this step, call
the
ATARI Repair Hotline (see page 4A-1).
Yes
111
I
No
+With audio test ,
b.
going is there a No Swapout
I l)A7
Does
audio
series of changing
2) A2 work?
square waves on A7
Pin 37? b )
9
1 Yes
Is the approximate
same series of signals
visable between
CIS &
R4 l?
M open A7 Pin
37 and C15.
Is there a 4.5 Mhz I -2v
p-p signal on the side
1 yes I
Defective: Repair
I) C10
2) R33
CX5200 Field Service Manual
Changed by
ECN /I0036
6/21 /83