Atari 2600 Field Service Manual

2600A Gray Bars Test Procedure
Place color/
black & white
switch
in B&W
posit ion.
I
Did screen pattern
change when switch Pg. 6-8
was moved ?
Yes
L
Is proper gray
bar pattern Pg. 6-13
present? (See
Figure 4-4).
Is a partial
segment missing
or is any color
Pg. 4-45
present? (See
- Figure 4-51
Pg. 6-14 or 6-15
M - 2600A Revs. 1-13
N - 2600A Revs. 14 and up
2600/2600A Domestic VCS

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