Serial
port
problems
Symptom
Suggested
action
The
number
of
serial
ports
identified
by
the
operating
system
is
less
than
the
number
of
serial
ports
that
are
installed.
Make
sure
that:
v
Each
port
is
assigned
a
unique
address
in
the
Configuration/Setup
Utility
program
and
none
of
the
serial
ports
is
disabled.
v
The
serial-port
adapter,
if
you
installed
one,
is
seated
correctly.
If
the
problem
remains,
call
for
service.
A
serial
device
does
not
work.
1.
Make
sure
that:
v
The
device
is
compatible
with
the
computer.
v
The
serial
port
is
enabled
and
is
assigned
a
unique
address.
v
The
device
is
connected
to
the
correct
connector.
2.
Run
serial
port
diagnostics.
3.
Replace
the
failing
serial
device.
If
the
problem
remains,
call
for
service.
Software
problems
Symptom
Suggested
action
You
suspect
a
software
problem.
v
To
determine
if
problems
are
caused
by
the
software,
make
sure
that:
–
The
computer
has
the
minimum
memory
needed
to
use
the
software.
For
memory
requirements,
see
the
information
that
comes
with
the
software.
–
If
you
have
just
installed
an
adapter
or
memory,
the
computer
does
not
have
a
memory-address
conflict.
–
The
software
is
designed
to
operate
on
the
computer.
–
Other
software
works
on
the
computer.
–
The
software
that
you
are
using
works
on
another
computer.
v
If
you
received
any
error
messages
when
using
the
software
program,
see
the
information
that
comes
with
the
software
for
a
description
of
the
messages
and
suggested
solutions
to
the
problem.
If
y
the
problem
remains,
contact
your
place
of
purchase
of
the
software.
Universal
Serial
Bus
(USB)
port
problems
Symptom
Suggested
action
A
USB
device
does
not
work.
Make
sure
that:
v
You
are
not
trying
to
use
a
USB
device
during
POST
if
a
standard
(non-USB)
keyboard
is
connected
to
the
keyboard
connector.
If
a
standard
(non-USB)
keyboard
is
attached
to
the
keyboard
connector,
the
USB
is
disabled,
and
no
USB
device
will
work
during
POST.
v
The
correct
USB
device
driver
is
installed.
v
The
operating
system
supports
USB
devices.
If
the
problem
remains,
call
for
service.
System-board
error
LEDs
The
following
illustration
shows
the
error
LEDs
on
the
system
board.
Each
error
LED
is
lit
to
indicate
a
problem
with
a
specific
component.
After
a
problem
is
corrected,
the
LED
will
not
be
lit
the
next
time
the
computer
is
restarted.
92
IntelliStation
A
Pro
Type
6224:
User’s
Guide
Summary of Contents for IntelliStation A Pro 6224
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