Atari 2600

Trigger Line Troubleshooting Procedure
.I Yes
I
I
C
1s +Sv at A203
Repair
open trace from:
No
R225 to A203
Is trigger Line
pin 7 (right
(right) - now operating
trigger) and pin 9
-
R226 to A203 properly?
(left trigger)
(left)
* A i
I
) Yes
A I 1
1
-
I
Yes
-
A A 1
L trigger Line
now operatins
correctly?
I
Check/Rtpair
C236,CRZOZ
(left)
C237,CR203
(right)
-
Check/repair trace lines
from:
R225 to 3203, pin 6
(right), R226 to 3202,
pin 6 (left).
b
ls +5v at pin 6
of 3203 (right)
trigger) or
1202
(left trigger)?
t
b 4.5-5v at
L 9
A203 pin 6 Swapout A203. -
(right) and No
I
Does trigger line
now WQd pmperly?
2600/2600A Domestic VCS
No -
J
Is trigger line
nor operating
cofrectly ?
Yes
'
L
3
Check for VMOD
(+Sv) at top of
R225 (right) or
R226 (left)
in 10 (left)?
-
I
Yes
L
Swapout A201
I
I
Docs trigger Yes
line now work I
swapout
I) A200
2) A202
4 I
I