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
63.
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
33
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
System
DIMMs
v
I/O
buffer
DIMMs
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.
Calling
IBM
for
service
See
Appendix
B,
“Getting
help
and
technical
assistance,”
on
page
125
for
information
about
calling
IBM
for
service.
When
you
call
for
service,
have
as
much
of
the
following
information
available
as
possible:
v
Machine
type
and
model
v
Failure
symptoms
–
Does
the
blade
server
fail
the
diagnostic
programs?
If
so,
what
are
the
error
codes?
–
What
occurs?
When?
Where?
–
Is
the
failure
repeatable?
–
Has
the
current
server
configuration
ever
worked?
Chapter
5.
Diagnostics
and
troubleshooting
109
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