IBM HS20 User Guide - Page 79

Service, processor, problems, Light, diagnostics, feature, overview, Diagnosing, using, light

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Service processor problems Symptom Suggested action The service processor reports Shut down the operating system and turn off the blade server; then, remove the a general monitor failure. blade server from the BladeCenter unit, wait for 30 seconds, reinstall the blade server in the BladeCenter unit, and restart the blade server. If a problem remains, call for service. Light path diagnostics feature overview If the system-error LED on the system LED panel on the front or rear of the BladeCenter unit is lit, one or more error LEDs on the BladeCenter unit components also might be lit. These LEDs help identify the cause of the problem. Diagnosing problems using the light path diagnostics This section provides the information about using the light path diagnostics to diagnose problems that might arise during installation. To locate the actual component that caused the error, you must locate the lit error LED on that component. The following steps illustrate how to use the light path diagnostics to diagnose a system error: 1. Shut down the operating system, turn off the blade server, and remove the blade server from the BladeCenter unit. 2. Place the blade server on a flat, static-protective surface. 3. Remove the cover from the blade server. 4. Press and hold the light path diagnostics button to relight the LEDs that were lit before you removed the blade server from the BladeCenter unit. The LEDs will remain lit for as long as you press the button, to a maximum of 25 seconds. See "System-board LED locations" on page 12 for the location of the light path diagnostics button and error LEDs, then see the "Light path diagnostics table" on page 66. Chapter 6. Solving problems 65

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Service
processor
problems
Symptom
Suggested
action
The
service
processor
reports
a
general
monitor
failure.
Shut
down
the
operating
system
and
turn
off
the
blade
server;
then,
remove
the
blade
server
from
the
BladeCenter
unit,
wait
for
30
seconds,
reinstall
the
blade
server
in
the
BladeCenter
unit,
and
restart
the
blade
server.
If
a
problem
remains,
call
for
service.
Light
path
diagnostics
feature
overview
If
the
system-error
LED
on
the
system
LED
panel
on
the
front
or
rear
of
the
BladeCenter
unit
is
lit,
one
or
more
error
LEDs
on
the
BladeCenter
unit
components
also
might
be
lit.
These
LEDs
help
identify
the
cause
of
the
problem.
Diagnosing
problems
using
the
light
path
diagnostics
This
section
provides
the
information
about
using
the
light
path
diagnostics
to
diagnose
problems
that
might
arise
during
installation.
To
locate
the
actual
component
that
caused
the
error,
you
must
locate
the
lit
error
LED
on
that
component.
The
following
steps
illustrate
how
to
use
the
light
path
diagnostics
to
diagnose
a
system
error:
1.
Shut
down
the
operating
system,
turn
off
the
blade
server,
and
remove
the
blade
server
from
the
BladeCenter
unit.
2.
Place
the
blade
server
on
a
flat,
static-protective
surface.
3.
Remove
the
cover
from
the
blade
server.
4.
Press
and
hold
the
light
path
diagnostics
button
to
relight
the
LEDs
that
were
lit
before
you
removed
the
blade
server
from
the
BladeCenter
unit.
The
LEDs
will
remain
lit
for
as
long
as
you
press
the
button,
to
a
maximum
of
25
seconds.
See
“System-board
LED
locations”
on
page
12
for
the
location
of
the
light
path
diagnostics
button
and
error
LEDs,
then
see
the
“Light
path
diagnostics
table”
on
page
66.
Chapter
6.
Solving
problems
65