Atari 2600 Field Service Manual

Pink a Getn
Not Ud
C r een
Not Used
Cunc
Ret
Switch
Gem
Not UA
Figure 4-8. Diagnostic Va tr ix Screen
with Defective Pattern
Came
kka
Switch
Any missing grid lines or disrupted rectangles indicate an I/O line failure (see page 4-26).
Any missing or disrupted blue or black reference lines indicate that there has probably
been
a microprocessor failure (see page 4-23).
Game
Rex t
Switch
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