Atari CX 5200 Field Service Manual page 39

The
Model 5200
tests are
run
using the
Port
Board (Loop
Back
Board)
which
automatically cycles through
all
of the
tests.
If
a
test
fails:
turn the unit
off,
remove
the Port Board,
plug a
game
controller
into
Port
1
,
and
turn
the
unit
back
on.
You
can
select any
of the tests
manually by
pressing the proper
key
followed by the
start
key.
NOTE:
The
Diagnostic Cartridge
will
cycle automatically only
if
the Port
Board
is
inserted before the
unit
is
turned on.
Press
the * or # key followed by the
start
key
to print this
menu
on the
screen.
l=Any Video
2=Color Bars
3=Gray Bars
4=Port Test
5=Pokey
Adjust
6=Tone
Test
7=Ram
Test
8=Verify
OS
ROM
9=Display Options
0=Examine
Options 9 and 0 are not used at
this time.
The
following pages
show
the
tests
as they appear with the Port Board plugged
in.
If
a test
fails,
go
to the
Flowchart Entry
Point indicated
for that test
and begin
troubleshooting.
CX5200
Field
Service
Manual
3-2