IBM 621858U Installation Guide - Page 42

Power-on, self-test, codes, error

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Power-on self-test (POST) When you turn on the computer, it performs a series of tests to check the operation of system components and some of the optional devices in the computer. This series of tests is called the power-on self-test, or POST. If a power-on password is set, you must type the password and press Enter, when prompted, for POST to run. If POST is completed without detecting any problems, a single beep sounds, and the computer startup is completed. If POST detects a problem, more than one beep might sound, or an error message is displayed. See ""Beep code descriptions" in the Problem Determination and Service Guide and "POST error codes" in this document for more information. POST beep codes A beep code is a combination of short and long beeps, or a series of short beeps, separated by pauses (intervals without sound). For example, a "1-2-3" beep code is one short beep, a pause, two short beeps, a pause, and three short beeps. A beep code other than one beep indicates that the POST process has detected a problem. To determine the meaning of a beep code, see "Beep code descriptions"in the Problem Determination and Service Guide, on the IBM IntelliStation Documentation CD. If no beeps code sounds, see "No-beep symptoms" in the Problem Determination and Service Guide on the IBM IntelliStation Documentation CD. POST error codes The following table provides an abbreviated list of the POST error codes that might appear during startup. Note: See the Problem Determination and Service Guide on the IBM IntelliStation Documentation CD for more information about the POST error codes. 30 IBM IntelliStation M Pro Type 6218: Installation Guide

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Power-on
self-test
(POST)
When
you
turn
on
the
computer,
it
performs
a
series
of
tests
to
check
the
operation
of
system
components
and
some
of
the
optional
devices
in
the
computer.
This
series
of
tests
is
called
the
power-on
self-test,
or
POST.
If
a
power-on
password
is
set,
you
must
type
the
password
and
press
Enter,
when
prompted,
for
POST
to
run.
If
POST
is
completed
without
detecting
any
problems,
a
single
beep
sounds,
and
the
computer
startup
is
completed.
If
POST
detects
a
problem,
more
than
one
beep
might
sound,
or
an
error
message
is
displayed.
See
““Beep
code
descriptions”
in
the
Problem
Determination
and
Service
Guide
and
“POST
error
codes”
in
this
document
for
more
information.
POST
beep
codes
A
beep
code
is
a
combination
of
short
and
long
beeps,
or
a
series
of
short
beeps,
separated
by
pauses
(intervals
without
sound).
For
example,
a
“1-2-3”
beep
code
is
one
short
beep,
a
pause,
two
short
beeps,
a
pause,
and
three
short
beeps.
A
beep
code
other
than
one
beep
indicates
that
the
POST
process
has
detected
a
problem.
To
determine
the
meaning
of
a
beep
code,
see
“Beep
code
descriptions”in
the
Problem
Determination
and
Service
Guide,
on
the
IBM
IntelliStation
Documentation
CD.
If
no
beeps
code
sounds,
see
“No-beep
symptoms”
in
the
Problem
Determination
and
Service
Guide
on
the
IBM
IntelliStation
Documentation
CD.
POST
error
codes
The
following
table
provides
an
abbreviated
list
of
the
POST
error
codes
that
might
appear
during
startup.
Note:
See
the
Problem
Determination
and
Service
Guide
on
the
IBM
IntelliStation
Documentation
CD
for
more
information
about
the
POST
error
codes.
30
IBM
IntelliStation
M
Pro
Type
6218:
Installation
Guide