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Atari 400 Field Service Manual

Atari 400
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1)
Type:
NEW and press RETURN.
2)
Type: 10?"M-; :GOTO 10
and press
RETURN.
3)
Type:
RUN and press
RETURN-
The
system starts printing Ms, character after character, line
after line- If
any are
blurred
and/or nin together, the Video Buffer
Chip or another of the
discrete
components
in the video summing
circuitry on the mainboard is probably
defective.
To stop this test,
press
BREAK
or SYSTEM RESET,
STAR
RMDEr'^^ Test
If the
Console has
effectively passed all previous
tests and performs
this game without
any visible problems,
it is almost
certainly operating properly.
Turn POWER
off, remove
the
BASIC
cartridge, insert the STAR RAIDER^^
cartridge,
and turn the POWER
on.
Now,
go through the
game's various
screens and functions
(play
the game).
Shake Test
Grasp
the unit firmly
with
both hands
and
shai<e
it vigorously
for approximately
10 to
20
seconds.
DO NOT HIT
or
STRIKE
the
unit against the
bench or other
hard
object
without
having
your fingers between
the unit
and the surface
being
struck. Perform
the MEMO PAD
test to make
certain
that none of the
connections,
boards, and/or
components
have
become
unseated,
and that the
unit is properly
operational.
Burn
in
After the
unit has
successfully
passed all the previous
procedures
and is operating
correctly,
it is ready
for burnin
Burnin
consists
of operating
the system
continuouisly for
a long
period of time
(recommended
S hours).
Use
one of the
following three methods.
i)
Insert
the SALT
II
cartridge
and run it with
continuous RAM
or
PORT
test.
2) Insert
Star Raider
or
another
game cartridge and run
it.
3) Perform
the ^tOO/SOO
Console Test
(810 Disk Drive
required).
ATARI
Home
Computer
3-16

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Atari 400 Specifications

General IconGeneral
ManufacturerAtari
Model400
TypeHome Computer
Release Year1979
CPUMOS Technology 6502
CPU Speed1.79 MHz
ROM10 KB
Operating SystemAtari OS
KeyboardMembrane keyboard
RAM8 KB (expandable to 48 KB)
GraphicsANTIC and GTIA chips
Sound4 channels
DisplayRF output for connection to TV
StorageOptional cassette tape drive or floppy disk drive
PortsCartridge
Display Resolution320x192 (16 colors)

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