Memory
problems
v
Follow
the
suggested
actions
in
the
order
in
which
they
are
listed
in
the
Action
column
until
the
problem
is
solved.
v
See
Chapter
3,
“Parts
listing,
Types
1885
and
8853,”
on
page
15
to
determine
which
components
are
CRUs
and
which
components
are
FRUs.
v
If
an
action
step
is
preceded
by
“(Trained
service
technician
only),”
that
step
must
be
performed
only
by
a
trained
service
technician.
Symptom
Action
The
amount
of
system
memory
that
is
displayed
is
less
than
the
amount
of
installed
physical
memory.
1.
Make
sure
that:
v
You
have
installed
the
correct
type
of
memory.
v
If
you
changed
the
memory,
you
updated
the
memory
configuration
in
the
Configuration/Setup
Utility
program.
v
All
banks
of
memory
are
enabled.
The
blade
server
might
have
automatically
disabled
a
memory
bank
when
it
detected
a
problem,
or
a
memory
bank
might
have
been
manually
disabled.
2.
Check
BMC
log
for
error
message
289:
v
If
a
DIMM
was
disabled
by
a
system-management
interrupt
(SMI),
replace
the
DIMM.
v
If
a
DIMM
was
disabled
by
the
user
or
by
POST,
run
the
Configuration/Setup
Utility
program
and
enable
the
DIMM.
3.
Reseat
the
DIMM,
and
the
Memory
and
I/O
Expansion
Blade
if
one
is
installed.
4.
Replace
the
following
components
one
at
a
time,
in
the
order
shown,
restarting
the
blade
server
each
time:
a.
Memory
and
I/O
Expansion
Blade
(if
one
is
installed)
b.
Replace
the
DIMM.
c.
(Trained
service
technician
only)
System
board
assembly
Multiple
rows
of
DIMMs
in
a
branch
are
identified
as
failing.
1.
Reseat
the
DIMMs;
then,
restart
the
server.
2.
Remove
the
lowest-numbered
DIMM
pair
of
those
that
are
identified
and
replace
with
an
identical
pair
of
known
good
DIMMs;
then,
restart
the
server.
Repeat
as
necessary.
If
the
failures
continue
after
all
identified
pairs
are
replaced,
go
to
step
4.
3.
Return
the
removed
DIMMs,
one
pair
at
a
time,
to
their
original
connectors,
restarting
the
server
after
each
pair,
until
a
pair
fails.
Replace
each
DIMM
in
the
failed
pair
with
an
identical
known
good
DIMM,
restarting
the
server
after
each
DIMM.
Replace
the
failed
DIMM.
Repeat
step
3
until
all
removed
DIMMs
have
been
tested.
4.
(Trained
service
technician
only)
Replace
the
system
board.
Chapter
5.
Diagnostics
83
Summary of Contents for 8853L6U
Page 1: ...BladeCenter HS21 Types 1885 and 8853 Problem Determination and Service Guide...
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Page 16: ...xiv BladeCenter HS21 Types 1885 and 8853 Problem Determination and Service Guide...
Page 30: ...14 BladeCenter HS21 Types 1885 and 8853 Problem Determination and Service Guide...
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Page 146: ...Part Number 49Y0053 Printed in USA 1P P N 49Y0053...
