Atari 800 Field Service Manual

A
Consumer Product Service
3
Manager
of
Tehnlcal Support HGD
A™'
TECH
TIP
number
10
MODEL:
i^OO/800
Computer
DATEi
02/22/83
If
intermittent
lockups
occur in
a
variety
of operating situations
the unit
should
be
checked for hardware
failure
in one of three
areas.
o
Dirty
contacts
or corrosion
of edge connectors.
o
Heat
related
failure of components
particularly
the
6502
MPU,
Outright
failure
of components.
If the problem
appears to be user written
software, refer
your customer
to the Product
Support
Hot Line
for programming
assistance.
800-672-140*
Inside
California
800-538-85if3
Outside
California
If
the
problem
appears to be
third
party software oriented,
refer
your customer
to the
retail
outlet where
it was
purchased, or
to the
manufacturer of the
software.
If
you
cannot determine
from
your customer's
answers
whether
the problem
is
software
or hardware
oriented, bum-in
the unit
for at least 12
hours using
continuous
RAM
Test of
the SALT
2.05 Test
Cartridge. At
the
end of the bum-in
period,
press
the
SYSTEM
RESET
control key
six times-
Watch the
screen
after each
press to see
that
the POWER-UP
screen
correctly appears.
If the
screen
does not
come up
correctly -
there
is
definitely
a component
failure
occuring.
Use the
disassembly
procedures
outlined
in
the Atari
WOTM/gooTM
Computer Field
Service
Manual
(FDlOOOOi)
to
disassemble
the
unit.
1.
Check for
frayed
and/or
broken wires;
JU*
Motherboard
to 3202
of the
Power
Supply
Board.
Check
that
connectors are
clean and
securely
attached
between
the Power
Supply
and
Motherboard,
and where the
ROM/RAMs
and
CPU
plug
into
the
Motherboard-
When
checking the
above look
for
cold
solder
joints.
2.
Replace
the
6502 (CPU)
(Part
#
C01i^377)
to
eUminate this
component
as
possible
failure.
3. Insert
a
Star
Raider
cartridge,
Power
-Up the system
and
continue testing.
4. If
no
failure
occurs
and everything
checks
OK
then retum
computer
to
customer.
If
computer
is
returned
and
is still failing,
check
the following
additional
ICs:
Replace
Part Number
ANTIC
C012296
GTIA
C0lf*805
Multiplexers
(Vendor
& Date
Codes must
match)
C0U3^5
(On
8
and 16K
(2503 and
RAM
boards)
Z50^)

Atari 800 Specifications

General

Processor	MOS Technology 6502
Processor Speed	1.79 MHz
ROM	10 KB
Graphics	ANTIC and GTIA chips
Release Year	1979
Display Resolution	up to 320 x 192
Colors	128 colors
Sound	4 channels
Storage	Cartridge, cassette, floppy disk
Ports	Cartridge, serial, monitor
Operating System	Atari OS