Atari Repair Hotline; Diagnostic Flowchart; Swapout Procedure 4A-1; Replace In Order 4A-1 - Atari CX 5200 Field Service Manual

SECTION
4
A
2-PORT
5200
DIAGNOSTIC
FLOWCHART
The
Diagnostic
Flowchart
is
intended
to be
easy
to use
and
the
primary
aid
when
troubleshooting the 2-Port 5200.
Follow
the
prompts
in
the order presented.
When
a
question
is
asked, follow the
line
from
the
box
that best applies to your
unit's
condition.
When
that
line
terminates with a letter inside a
circle,
locate the
letter
on a
different
page and continue the diagnosis.
The
flowchart leaves nothing
to
chance;
it
tells
you
when
to
perform
a specific
test
and
when
to
replace
components.
SWAPOUT PROCEDURE
At many
places
in
the diagnostic flowchart, a box
tells
you
to
"swapout" a
component, a
chip, or
a
number
of
chips
in
a
particular order.
The
"swapout"
instruction
means
that
you should replace the indicated
components
(one at a time)
with
known-good components
of the
same
type.
The
unit should
then be tested with
the
new,
known-good
component(s)
in
place to see
whether
the
swapout
solved the
problem being checked.
If
the
swapout
did
not
fix
the problem,
leave the
new
chip
in
and swapout
the next.
Repeat
this
procedure
for
the
rest of the
components.
Once
the
unit
functions properly,
reinstall
the
original IC's
one by one
to
determine
which
are actually defective.
REPLACE
IN
ORDER
The
"replace
in
order" instruction means
that you
should replace the
components
indicated
in
the order
listed until
the result
called out
in
the previous block
is
obtained.
F
-
Some
lines
terminate with an
F
inside
a
circle.
When
this
occurs, return to the
beginning of the
test
sequence on page
3A-1.
N
-
Some
lines
terminate with an
N
inside
a
circle.
When
this
occurs,
call
your
Atari Repair
Hotline.
Inside California
(800)
672-1466
Outside California
(800)
538-1535
(800)
538-1536
CX5200
Field
Service Manual 4A-1
Changed
by
ECN
#0036
6/21/83