IBM 8676 Hardware Maintenance Manual - Page 31

Diagnostic, tools, overview, error

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Diagnostic tools overview The following tools are available to help you identify and resolve hardware-related problems: v POST beep codes, error messages, and error logs The power-on self-test (POST) generates beep codes and messages to indicate successful test completion or the detection of a problem. See "POST error logs" for more information. The POST error log contains the three most recent error codes and messages that the system has generated during POST. The System Error log contains all the error messages that were issued during POST. To view the contents of the error logs, start the Configuration/Setup Utility program; then, select Error Logs from the main menu. See "Viewing the System Error log" on page 23 for more information. v Diagnostic programs and error messages The server diagnostic programs are stored in upgradable read-only memory (ROM) on the system board. These programs are the primary method of testing the major components of the server. See "Diagnostic programs and error messages" on page 22 for more information. v ServerGuide error symptoms ServerGuide error symptoms are explained at "ServerGuide error symptoms" on page 25. v SCSI error messages For information on SCSI errors, see "Small computer system interface messages" on page 25 and "SCSI error codes" on page 105. v Light Path Diagnostics™ feature The server has light-emitting diodes (LEDs) to help you identify problems with server components. By following the light path, you can quickly identify the type of problem that occurred. The light path begins with the LEDs on the operator information panel ( also known as the front LED panel). See "Light Path Diagnostics" on page 26 for more information. v Error symptom charts These charts list problem symptoms, along with suggested steps to correct the problems. See the "Error symptoms" on page 89 for more information. v Customized support page You can create a customized support page that is specific to the hardware, complete with Frequently Asked Questions, Parts Information, Technical Hints and Tips, and Downloadable files. In addition, you can choose to receive electronic mail (e-mail) notifications whenever new information becomes available about the registered products. After you register and profile your xSeries products, you can diagnose problems using the IBM Online Assistant, and you can participate in the IBM discussion forum. For more detailed information about registering and creating a customized profile for your IBM products, go to the following addresses on the Web: - http://www.ibm.com/pc/register - http://www.ibm.com/pc/support POST error logs 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. Chapter 3. Diagnostics 21

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Diagnostic
tools
overview
The
following
tools
are
available
to
help
you
identify
and
resolve
hardware-related
problems:
v
POST
beep
codes,
error
messages,
and
error
logs
The
power-on
self-test
(POST)
generates
beep
codes
and
messages
to
indicate
successful
test
completion
or
the
detection
of
a
problem.
See
“POST
error
logs”
for
more
information.
The
POST
error
log
contains
the
three
most
recent
error
codes
and
messages
that
the
system
has
generated
during
POST.
The
System
Error
log
contains
all
the
error
messages
that
were
issued
during
POST.
To
view
the
contents
of
the
error
logs,
start
the
Configuration/Setup
Utility
program;
then,
select
Error
Logs
from
the
main
menu.
See
“Viewing
the
System
Error
log”
on
page
23
for
more
information.
v
Diagnostic
programs
and
error
messages
The
server
diagnostic
programs
are
stored
in
upgradable
read-only
memory
(ROM)
on
the
system
board.
These
programs
are
the
primary
method
of
testing
the
major
components
of
the
server.
See
“Diagnostic
programs
and
error
messages”
on
page
22
for
more
information.
v
ServerGuide
error
symptoms
ServerGuide
error
symptoms
are
explained
at
“ServerGuide
error
symptoms”
on
page
25.
v
SCSI
error
messages
For
information
on
SCSI
errors,
see
“Small
computer
system
interface
messages”
on
page
25
and
“SCSI
error
codes”
on
page
105.
v
Light
Path
Diagnostics
™
feature
The
server
has
light-emitting
diodes
(LEDs)
to
help
you
identify
problems
with
server
components.
By
following
the
light
path,
you
can
quickly
identify
the
type
of
problem
that
occurred.
The
light
path
begins
with
the
LEDs
on
the
operator
information
panel
(
also
known
as
the
front
LED
panel).
See
“Light
Path
Diagnostics”
on
page
26
for
more
information.
v
Error
symptom
charts
These
charts
list
problem
symptoms,
along
with
suggested
steps
to
correct
the
problems.
See
the
“Error
symptoms”
on
page
89
for
more
information.
v
Customized
support
page
You
can
create
a
customized
support
page
that
is
specific
to
the
hardware,
complete
with
Frequently
Asked
Questions,
Parts
Information,
Technical
Hints
and
Tips,
and
Downloadable
files.
In
addition,
you
can
choose
to
receive
electronic
mail
(e-mail)
notifications
whenever
new
information
becomes
available
about
the
registered
products.
After
you
register
and
profile
your
xSeries
products,
you
can
diagnose
problems
using
the
IBM
Online
Assistant,
and
you
can
participate
in
the
IBM
discussion
forum.
For
more
detailed
information
about
registering
and
creating
a
customized
profile
for
your
IBM
products,
go
to
the
following
addresses
on
the
Web:
–
–
POST
error
logs
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.
Chapter
3.
Diagnostics
21