IBM 8479 Hardware Maintenance Manual - Page 17

Diagnostics

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Diagnostics This section provides basic troubleshooting information to help you resolve some common problems that might occur with the server. If you cannot locate and correct the problem using the information in this section, refer to "Symptom-to-FRU index" on page 89 for more information. Diagnostic tools overview The following tools are available to help you identify and resolve hardware-related problems: v POST beep codes The power-on self-test (POST) generates beep codes and messages to indicate successful test completion or the detection of a problem. See "POST" for more information. v Diagnostic programs and error messages The server diagnostic programs are provided on the IBM Enhanced Diagnostics CD. These programs test the major components of the server. See "Diagnostic programs and error messages" on page 10 for more information. POST When you turn on the server, it performs a series of tests to check the operation of server components and some of the options installed in the server. This series of tests is called the power-on self-test or POST. If POST finishes without detecting any problems, the first window of the operating system or application program appears. Note: 1. If you have a power-on password or administrator password set, you must type the password and press Enter, when prompted, before POST will continue. 2. A single problem might cause several error messages. When this occurs, work to correct the cause of the first error message. After you correct the cause of the first error message, the other error messages usually will not occur the next time you run the test. POST beep code descriptions POST generates beep codes to indicate successful completion or the detection of a problem. v One short beep indicates the successful completion of POST. v More than one beep indicates that POST detected a problem. For more information, see "Beep symptoms" on page 89". POST error messages The possible types of beep codes that your system might emit are: © Copyright IBM Corp. 2001 9

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Diagnostics
This
section
provides
basic
troubleshooting
information
to
help
you
resolve
some
common
problems
that
might
occur
with
the
server.
If
you
cannot
locate
and
correct
the
problem
using
the
information
in
this
section,
refer
to
“Symptom-to-FRU
index”
on
page
89
for
more
information.
Diagnostic
tools
overview
The
following
tools
are
available
to
help
you
identify
and
resolve
hardware-related
problems:
v
POST
beep
codes
The
power-on
self-test
(POST)
generates
beep
codes
and
messages
to
indicate
successful
test
completion
or
the
detection
of
a
problem.
See
“POST”
for
more
information.
v
Diagnostic
programs
and
error
messages
The
server
diagnostic
programs
are
provided
on
the
IBM
Enhanced
Diagnostics
CD.
These
programs
test
the
major
components
of
the
server.
See
“Diagnostic
programs
and
error
messages”
on
page
10
for
more
information.
POST
When
you
turn
on
the
server,
it
performs
a
series
of
tests
to
check
the
operation
of
server
components
and
some
of
the
options
installed
in
the
server.
This
series
of
tests
is
called
the
power-on
self-test
or
POST.
If
POST
finishes
without
detecting
any
problems,
the
first
window
of
the
operating
system
or
application
program
appears.
Note:
1.
If
you
have
a
power-on
password
or
administrator
password
set,
you
must
type
the
password
and
press
Enter,
when
prompted,
before
POST
will
continue.
2.
A
single
problem
might
cause
several
error
messages.
When
this
occurs,
work
to
correct
the
cause
of
the
first
error
message.
After
you
correct
the
cause
of
the
first
error
message,
the
other
error
messages
usually
will
not
occur
the
next
time
you
run
the
test.
POST
beep
code
descriptions
POST
generates
beep
codes
to
indicate
successful
completion
or
the
detection
of
a
problem.
v
One
short
beep
indicates
the
successful
completion
of
POST.
v
More
than
one
beep
indicates
that
POST
detected
a
problem.
For
more
information,
see
“Beep
symptoms”
on
page
89“.
POST
error
messages
The
possible
types
of
beep
codes
that
your
system
might
emit
are:
©
Copyright
IBM
Corp.
2001
9