Atari CX - Page 139

CURSOR LEFTlRIGHT TROUBLESHOOTING (Cont.)
Is the dig htly
rounded square wave
at pin 5 and pin 7 of
A1 a minimum of
450 MV? (Maximum
I 2.5V)
No
Replace U 1. r
Return to beginning of Test Sequence
I
CX5200 Field Service Manual
Is there approx. No
Is C10 shorted or No
Replace
400 MV at pins 4 &
are R30, R31 open?
D
6 of Al?
b
Yes Yes
I
Replace defective
Replace Al. component.
I I