Atari 2600 Field Service Manual page 120

2600A Trigger Line Troubleshooting Procedure
1
Yes
I
I
Swapout
I
No
Cantinuity good?
-
Repair Trace
P
I
A
1
I
-
Yes
Is there +5v at pin 6 of
-
1202 (Left Trigger) or
J203 (Right Trigger)?
I
-
Open R224, R225 or
shorted
(2216, C217.
h
Does
trigger line work No R223
or
R226 is shorted
properly now?
i
1) A201
2 ) A200
3) A202
No
Are 2226 (Left Trigger)
-
R223 (Right Trigger)
Pg.
6-2
Replace
defective resistor.
2600/2600A Domestic
VC
goacl
and connece to
2
b
C ~ V ?
Chetk continuity
benvetn
%Pins (3202
&
5203) and resistors
(R225 and R224).
A
I