Solving
undetermined
problems
Note:
When
you
are
diagnosing
a
problem
in
the
blade
server,
you
must
determine
whether
the
problem
is
in
the
blade
server
or
in
the
BladeCenter
unit.
v
If
all
of
the
blade
servers
have
the
same
symptom,
the
problem
is
probably
elsewhere
in
the
infrastructure.
For
more
information,
see
the
Hardware
Maintenance
Manual
and
Troubleshooting
Guide
or
Problem
Determination
and
Service
Guide
for
your
BladeCenter
unit.
v
If
the
BladeCenter
unit
contains
more
than
one
blade
server
and
only
one
of
the
blade
servers
has
the
problem,
troubleshoot
the
blade
server
that
has
the
problem.
If
the
blade
server
is
inoperative,
use
the
information
in
this
section.
If
you
suspect
that
a
software
problem
is
causing
failures
(continuous
or
intermittent),
see
“Software
problems”
on
page
58.
Check
the
LEDs
on
all
the
power
supplies
of
the
BladeCenter
unit
in
which
the
blade
server
is
installed.
If
the
LEDs
indicate
that
the
power
supplies
are
working
correctly
and
reseating
the
blade
server
does
not
correct
the
problem,
complete
the
following
steps:
1.
Turn
off
the
blade
server.
2.
Remove
the
blade
server
from
the
BladeCenter
unit
and
remove
the
cover.
3.
Make
sure
that
the
control
panel
connector
is
correctly
seated
on
the
system
board
(see
“Removing
the
blade-server
front
bezel
assembly”
on
page
41
for
the
location
of
the
connector).
4.
If
no
LEDs
on
the
control
panel
are
working
of
the
blade
server,
replace
the
bezel
assembly.
Try
to
turn
on
the
blade
server
from
the
Advanced
Management
Module
(see
the
documentation
for
the
BladeCenter
unit
and
Advanced
Management
Module
for
more
information).
5.
Reinstall
the
blade
server
and
check.
If
the
blade
server
remains
inactive,
continue
with
step
6.
6.
Turn
off
the
blade
server.
7.
Remove
the
blade
server
from
the
BladeCenter
unit
and
remove
the
cover.
8.
Remove
or
disconnect
the
following
devices
one
at
a
time,
if
installed,
until
you
find
the
failure:
v
High
Speed
InfiniBand
expansion
card
v
SAS
expansion
card
v
I/O
buffer
DIMMx
Reinstall,
turn
on,
and
reconfigure
the
blade
server
each
time.
If
the
problem
is
solved
when
you
remove
the
device
from
the
blade
server
but
the
problem
recurs
when
you
reinstall
the
same
device,
suspect
the
device;
if
the
problem
recurs
when
you
replace
the
device
with
a
different
one,
suspect
the
system
board.
Have
a
trained
service
technician
replace
the
system
board
assembly.
If
you
suspect
a
networking
problem
and
the
blade
server
passes
all
the
system
tests,
suspect
the
network
switch.
However,
the
problem
may
concern
the
network
itself
and
be
external
to
the
system.
Chapter
5.
Diagnostics
and
troubleshooting
95
Summary of Contents for QS21 - BladeCenter - 0792
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