Problem determination tips, Problem, Determination – IBM BladeCenter T Type 8720 User Manual
Page 115: Tips
3.
Damaged
data
in
BIOS
code
can
cause
undetermined
problems.
Check
the
LEDs
on
all
the
power
supplies.
If
the
LEDs
indicate
the
power
modules
are
working
correctly
and
reseating
the
BladeCenter
T
components
does
not
correct
the
problem,
remove
or
disconnect
the
BladeCenter
T
components
one
at
a
time
to
a
minimal
configuration
or
until
you
locate
the
problem.
You
do
not
need
to
remove
power
from
the
system.
Complete
the
following
steps
to
remove
the
components.
1.
Shut
down
the
operating
system
on
all
blade
servers.
2.
Turn
off
the
blade
servers;
then,
open
the
release
lever
on
each
blade
server,
and
slide
it
out
of
the
bay
approximately
1
inch.
3.
Disconnect
power
modules
2,
3,
and
4
one
at
a
time:
v
Press
the
blue
release
button
on
the
power
module.
v
Open
the
release
handle
all
the
way
out
to
the
open
position.
v
Slide
the
power
module
out
of
its
bay
approximately
1
inch.
4.
Disconnect
the
switch
modules
one
at
a
time.
To
do
this,
remove
all
cables
connected
to
the
switch
module;
then,
pull
the
release
lever
all
the
way
down.
Slide
the
switch
module
out
of
the
bay
approximately
1
inch.
The
BladeCenter
T
unit
can
be
checked
with
the
management
module
Web
interface
at
each
stage
as
components
are
removed
and
will
work
in
the
minimal
configuration.
If
the
minimal
configuration
does
not
work,
do
the
following.
1.
Recheck
the
management-module
network
settings.
2.
Unlatch
the
media
tray,
and
slide
it
out
of
the
bay
approximately
1
inch.
Note:
The
front
and
rear
panel
LEDs
will
not
function
with
the
media
tray
removed.
3.
Move
the
power
module
to
bay
2.
4.
Remove
and
reconnect
the
power
cord
to
the
power
module.
5.
Replace
the
management
module.
6.
Replace
the
power
module.
7.
Replace
the
backplane.
Problem
determination
tips
Due
to
the
variety
of
hardware
and
software
combinations
that
can
be
encountered,
use
the
following
information
to
assist
you
in
problem
determination.
If
possible,
have
this
information
available
when
requesting
assistance
from
Service
Support
and
Engineering
functions.
v
Machine
type
and
model
v
Microprocessor
or
hard
disk
upgrades
v
Failure
symptom
–
Do
diagnostics
fail?
–
What,
when,
where,
single,
or
multiple
systems?
–
Is
the
failure
repeatable?
–
Has
this
configuration
ever
worked?
–
If
it
has
been
working,
what
changes
were
made
prior
to
it
failing?
–
Is
this
the
original
reported
failure?
v
Diagnostics
version
—
type
and
version
level
v
Hardware
configuration
–
screen)
configuration
currently
in
use
–
BIOS
level
Chapter
6.
Symptom-to-FRU
index
105