Atari 2600 Field Service Manual page 106

2600A D e f e c t i v e Switch Troubleshooting ( C o n t i n u e d )
I
Is cap on that line shorted ,Yes
t o ground? (See chart)
/Is there +5v on the RAM
Replace switch.
L
I s switch internally
shorted?
pin for that switch?
(See chart)
I
&
Yes
L
I
I
Open between RAM pin
and inoperative switch.
d
A
Swapout
1) A202
2) A200
3)
A201
Repair
0
CONNECTION CHART
A202
Switch
Pin
No.
lack
and
White 2 1
Left Difficulty 17
Right Difficulty
16
Select 2 3
Reset 2
4
Pg.
6-2
2600/260014 D o m e s t i c VC: