Atari 2600

Defective Switch Troubleshooting Procedure (continued)
Check RAM
(A2021 pin for
the switch for
+5v. Is it
present?
Pg.. 4-9
Check for shorted
trace Line. Repair
as necessary.
Does switch now
work?
Swapout A202
2
Does switch
now work?
Chd whether capa-
citor on that RAM
line b shorted to
ground Replace as
necessary. Does switch
now work?
Pg. 4-2
2500/2600A Domestic VCS