IBM 326m Hardware Maintenance Manual - Page 29

Diagnostic, tools, overview, Power-on, self-test, codes

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Diagnostic tools overview The following tools are available to help you diagnose and solve hardware-related problems: v POST beep codes and error messages The power-on self-test (POST) generates beep codes and messages to indicate successful test completion or the detection of a problem. See "Power-on self-test" for more information. v Diagnostic programs The diagnostic programs are stored on the IBM Enhanced Diagnostics CD. These programs are the primary method of testing the major components of the server. See "Diagnostic programs and error messages" on page 20 for more information. v Error charts These charts list problem symptoms and steps to correct the problem. See "Error charts" on page 23 for more information. v Symptom-to-FRU index This index lists problem symptoms and steps to correct each problem. See Chapter 7, "Symptom-to-FRU index," on page 77 for more information. Power-on self-test When you turn on the server, the power on self-test (POST) performs a series of tests to check the operation of system components and some of the installed options. If POST finishes without detecting any problems, the first window of the operating system opens or an application program appears. If POST detects a problem, more than one beep might sound, and an error message appears on the screen. Notes: 1. If you have a user password set, you must type the password and press Enter, when prompted, before the operating system will start. 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 be resolved the next time you run the test. POST beep codes 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 78. If POST detects a problem (more than one beep sounds), an error message appears on the screen. See "Beep symptoms" on page 78 and "POST error codes" on page 90 for more information. Chapter 3. Diagnostics 19

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Diagnostic
tools
overview
The
following
tools
are
available
to
help
you
diagnose
and
solve
hardware-related
problems:
v
POST
beep
codes
and
error
messages
The
power-on
self-test
(POST)
generates
beep
codes
and
messages
to
indicate
successful
test
completion
or
the
detection
of
a
problem.
See
“Power-on
self-test”
for
more
information.
v
Diagnostic
programs
The
diagnostic
programs
are
stored
on
the
IBM
Enhanced
Diagnostics
CD.
These
programs
are
the
primary
method
of
testing
the
major
components
of
the
server.
See
“Diagnostic
programs
and
error
messages”
on
page
20
for
more
information.
v
Error
charts
These
charts
list
problem
symptoms
and
steps
to
correct
the
problem.
See
“Error
charts”
on
page
23
for
more
information.
v
Symptom-to-FRU
index
This
index
lists
problem
symptoms
and
steps
to
correct
each
problem.
See
Chapter
7,
“Symptom-to-FRU
index,”
on
page
77
for
more
information.
Power-on
self-test
When
you
turn
on
the
server,
the
power
on
self-test
(POST)
performs
a
series
of
tests
to
check
the
operation
of
system
components
and
some
of
the
installed
options.
If
POST
finishes
without
detecting
any
problems,
the
first
window
of
the
operating
system
opens
or
an
application
program
appears.
If
POST
detects
a
problem,
more
than
one
beep
might
sound,
and
an
error
message
appears
on
the
screen.
Notes:
1.
If
you
have
a
user
password
set,
you
must
type
the
password
and
press
Enter,
when
prompted,
before
the
operating
system
will
start.
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
be
resolved
the
next
time
you
run
the
test.
POST
beep
codes
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
78.
If
POST
detects
a
problem
(more
than
one
beep
sounds),
an
error
message
appears
on
the
screen.
See
“Beep
symptoms”
on
page
78
and
“POST
error
codes”
on
page
90
for
more
information.
Chapter
3.
Diagnostics
19