Power-Up Screen 3A-2; Channel - Atari CX 5200 Field Service Manual

• Plug a
game
controller into port
1
of the 5200.
•
Insert
the Diagnostic Cartridge (Version
1.1).
•
Turn on the T.V. (Select Channel
2 or
3)
and the 5200.
Press the
* or
# key followed by the
start
key to display
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
Test #4 and 0 are not
used.
To
run the
tests
press the proper
numerical key on the 5200
controller and then press
START.
To
escape a
test
(except #5), press
any
key.
To escape
#5,
POKEY
ADJUST,
press the
bottom
fire
button.
The
following pages
show
the
tests as
they appear with the Port Board plugged
in.
If
a test indicates a
failure,
go
to
the Flowchart Entry Point indicated
for
that test
and begin troubleshooting.
POWER-UP SCREEN
The
power-up screen
displays
information about the
internal status of
the
unit.
It
shows:
•
The
type
of
TIA
in
the
unit.
If
the
GTIA
is
the proper one
for the unit,
NTSC
appears.
If
PAL
appears, replace
the
GTIA
with
one from
your
kit.
•
The
revision level of the
ROM
in
the
unit.
(Not important
at
this
time.)
If
at
power-up
this
screen does not appear, one of the following screens appears:
•
Solid
Colored
(Black)
Screen
or
Vertically
Lined Screen
•
Snowy
Screen
•
Warped
-
Ragged
Picture
Proceed
to
the
description of
that
failure
which
follows.
CX5200
Field Service Manual
3A-2