IBM 622020U User Guide - Page 122

Serial, problems, Software, Universal, System-board, error

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Serial port problems Serial port symptom Suggested action The number of serial ports identified by the operating system is less than the number of serial ports installed. Verify that: v Each port is assigned a unique address by the Configuration/Setup Utility program and none of the serial ports is disabled. v The serial-port adapter, if you installed one, is seated properly. A serial device does not work. If the problem remains, call for service. 1. Verify 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 port. 2. Run serial port diagnostics. 3. Replace the failing serial device. If the problem remains, call for service. Software problems Software problem symptom Suspected software problem. Suggested action 1. To determine if problems are caused by the software, verify that: v The computer has the minimum memory needed to use the software. For memory requirements, see the information that comes with the software. Note: If you have just installed an adapter or memory, you might have a memory address conflict. v The software is designed to operate on the computer. v Other software works on the computer. v The software that you are using works on another computer. 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. 2. If you have verified these items and the problem remains, contact your software place of purchase. Universal Serial Bus (USB) port problems Universal Serial Bus (USB) port symptom A USB device does not work. Suggested action Verify that: v You are not trying to use a USB device during POST if you have a standard (non-USB) keyboard attached to the keyboard port. Note: If a standard (non-USB) keyboard is attached to the keyboard port, 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. 100 IBM IntelliStation M Pro Types 6220 and 6230: User's Guide

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Serial
port
problems
Serial
port
symptom
Suggested
action
The
number
of
serial
ports
identified
by
the
operating
system
is
less
than
the
number
of
serial
ports
installed.
Verify
that:
v
Each
port
is
assigned
a
unique
address
by
the
Configuration/Setup
Utility
program
and
none
of
the
serial
ports
is
disabled.
v
The
serial-port
adapter,
if
you
installed
one,
is
seated
properly.
If
the
problem
remains,
call
for
service.
A
serial
device
does
not
work.
1.
Verify
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
port.
2.
Run
serial
port
diagnostics.
3.
Replace
the
failing
serial
device.
If
the
problem
remains,
call
for
service.
Software
problems
Software
problem
symptom
Suggested
action
Suspected
software
problem.
1.
To
determine
if
problems
are
caused
by
the
software,
verify
that:
v
The
computer
has
the
minimum
memory
needed
to
use
the
software.
For
memory
requirements,
see
the
information
that
comes
with
the
software.
Note:
If
you
have
just
installed
an
adapter
or
memory,
you
might
have
a
memory
address
conflict.
v
The
software
is
designed
to
operate
on
the
computer.
v
Other
software
works
on
the
computer.
v
The
software
that
you
are
using
works
on
another
computer.
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.
2.
If
you
have
verified
these
items
and
the
problem
remains,
contact
your
software
place
of
purchase.
Universal
Serial
Bus
(USB)
port
problems
Universal
Serial
Bus
(USB)
port
symptom
Suggested
action
A
USB
device
does
not
work.
Verify
that:
v
You
are
not
trying
to
use
a
USB
device
during
POST
if
you
have
a
standard
(non-USB)
keyboard
attached
to
the
keyboard
port.
Note:
If
a
standard
(non-USB)
keyboard
is
attached
to
the
keyboard
port,
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.
100
IBM
IntelliStation
M
Pro
Types
6220
and
6230:
User’s
Guide