Atari CX - Page 80

Audio Troubleshooting
I
Replace:
1) C13
2) Cl4
Adjust
Can LI be adjusted to
give a 4.5 Mhz reading?
L
1
Is the approximate same
Defective
C15
series of signals
visible between C15 &
U7 Pin 37 4
R4l?
Is there a 4.5 Mhz
No on the emitter
of Q4?
Replace:
I) L1
2) L2
I
I
* With audio test goin3
is there a wries of NO Swapout
'
Does audio
changing square waves
I) U7
2) U2
work?
on
U7 Pin 37?
A
A
Is there +5VDC
on the collector of
Q4?
1 Yes
Is there a 4.5 Mhz I -2v
pq
signal on the side
of
CIO connected to Q4?
Yes
*If second time at this step, call ATARI Repair Hotline.
I I
CX5200 Field Service Manual
Defective:
1) ClO
2) R33
Yes
Repair
Of
Replace
If you are servicing a unit containing
PCB CA020 108, chip designators have
been changed from U to A.