Atari CX 5200 Field Service Manual page 107
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Also See for CX 5200:
- Field service manual (187 pages) ,
- Service manual (101 pages) ,
- Field service manual (170 pages)
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KEYBOARD TROUBLESHOOTING (Continued)
u
Is there av on
Pin 6 of A9?
.
Yes
Swapou t
1 ) A9
2) A l a
Is the proble m
repaired?
No
Check capacitors and
resistors on Pins 1 -8
of Port
1
for proper
value and operation.
R eplace if defective.
CX5200 F ield Service Manual
Is there +5 VDC on
No
P ins 4, 5 and 1 4 of A27?
No
Defective A5 or open
traces from A5 to A27.
Yes
Repair
or
Replace
4 A-23
Yes
Replace A27.
Changed by
ECN 110036
6 / 2 1 /83
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