Atari 2600 Field Service Manual

Defective Switch Troubleshooting Procedure
Put inoper-
ative switch in
up (open)
position.
I
Is trace
3201 pin for that switch
line
shorted
(see connection chart)? to groud?
Yes
Repair
P
b dv now
present on
J2Ol pin for
that switch
(see chart)?
Does panun
on Screen
change when
switch
b
flipped?
I
Is on side of
switch tied ,to
ground as Shown
in schematic?
CONNECTION CHART
Switch
11 0 1 Pin No.
lad< h White 4
Left Difficulty S
Right Difficulty 7
select 9
Reset 8
2600/2600A Domestic VCS
2'
Replace switch
i

Atari 2600 Specifications

General

Manufacturer	Atari, Inc.
Release Date	September 11, 1977
CPU	MOS Technology 6507
CPU Speed	1.19 MHz
RAM	128 bytes
Graphics	Television Interface Adaptor (TIA)
Media	ROM cartridge
Successor	Atari 5200
Colors	128
Sound	2 channels
ROM	4 KB
Controller Input	Joystick