Atari 400 Field Service Manual

SECTION
3
TROUBLESHOOTING
AND TESTING
OVERVIEW
This
section describes
the
procedures
to maintain,
troubleshoot,
and
test the ATARI
*00/800 Computer
Consoles.
The
section
is divided
into two
major
categories:
1. TESTS
2.
TROUBLESHOOTING
TESTS
The
following
discussions
pertain
to
the
troubleshooting
procedures
required
to
checkout
the ATARI
&00/800
Home
Computer
Consoles.
Equipment
Needed
You
ATARI
equire
six
basic
pieces
of
equipment
in
order
to
analyze
the
failures
of the
'
i^OO/800
Home
Computer
Console.
These
items
include:
15MHz
oscilloscope
Stand
Alone Test
Cartridge
(SALT
II)
Peripheral
Port
Test
Connector
Hand
Controller
Jack Test
Connector
Television
Set
(properly
adjusted)
Small
Tool
Kit
ATARI
Home
Computer
3-1

Atari 400 Specifications

General

Manufacturer	Atari
Model	400
Type	Home Computer
Release Year	1979
CPU	MOS Technology 6502
CPU Speed	1.79 MHz
ROM	10 KB
Operating System	Atari OS
Keyboard	Membrane keyboard
RAM	8 KB (expandable to 48 KB)
Graphics	ANTIC and GTIA chips
Sound	4 channels
Display	RF output for connection to TV
Storage	Optional cassette tape drive or floppy disk drive
Ports	Cartridge
Display Resolution	320x192 (16 colors)