Atari 2600 Field Service Manual

Audio Test Procedure
I
Reinitialize
switches. Press
down the '?right
difficulty " switch.
Is there a
clear tone?
1
Pg. 4-27
Use scope or
frequency counter
to measure frequenq at
emitter
of QZOZ. I
7)
Tune audio to
5.5 MHz by ad-
justing L2O 1.
I
h
Ad just to 2 .06 MHz.
Look for stable
f r tquency.
Can unit be
adjusted is
sound clear?
Pg. 4-28
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