Atari 400 Field Service Manual

TOP COVER INSTALLATION
Open the cartridge door.
Slide the top cover down over
the open cartridge
door and the power-ON
LED (Refer
to
Figure
'^-2),
Guide the top cover
locator pins into the keyboard
holes and
snap the top
cover hood
under the keyboard-
Close the cartridge
door and set the
console on its face.
Align
the top and bottom
covers and Insert
the four screws
into the bottom
cover
and tighten (Refer
to Figure *-l).
ATARI
800 HOME
COMPUTER
CONSOLE ASSEMBLY
The
following
outlines the
steps required
to reassemble
the Atari SOO Home
Computer
Console
and its related
printed
circuit boards.
KEYBOARD
INSTALLATION
Refer
to Figure
'^-12
as reference
for the following
two
steps.
•
Set
the top
cover
upside down with
the keyboard
in it,
• Insert
and tighten
the
four mounting screws.
» *
*
NOTE
* »
•
Check
the
spacebar
and
keys
to
make
sure that
they are not
binding
before
proceeding.
MOTHERBOARD
INSTALLATION
Refer
to Figure
'^-ll as reference
for
the following
two steps,
•
Snap
the
plastic
cartridge
guide into the
top side of the
motherboard.
•
With
the motherboard
right
side
up, snap on the
four nylon
clips of the
lower
shield. Make
certain
all four
clips are firmly
seated.
Atari
Home
Computer
i^-17

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)