Atari CX - Page 96

GRAY BARS TROUBLESHOOTING
5200 to the Gray Bars
I pattern. I
Is there a +5V p-p
H
Defective R26,R24
signal on the side of
R25 or open between
R26,R24, & R25 con-
R26,R24, or R25 and
nected to Al?
R.F. Module Pin 4. t
Reference the line
on the chart below
which has the resistor
that did
not have the
proper signal.
9
Is there a +5V p-p
yes
Open between
A1
signal on the A1
h
output and that
I
output pin? resistor.
t
1s there a c5V p-p
signal on the A1
input pin?
"The 1 .1 Diagnostic Cartridge does not test LIMO.
L
I
is pullup resistor 3 1s there a +5V P-P Yes, Open between A5 pin
Repair\
good?
signal on the
A5 pin?
' I
and A1 input.
b A
Yes
CX5200 Field Service Manual 4A-16
1
ye,
I
>
Swapout
1) A5
2) A2
3) A3
d
Repair
-
1 or
Replace
Defective
A1 or no
+5V or ground to
Al.
I
I
i .
I
Line # Resistor # *l Output A1 Input Pullup # A5 Pin #
0