IBM HC10 Service Guide - Page 75

Memory, problems, Microprocessor

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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, Type 7996," on page 11 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 during POST or by the Configuration/Setup Utility program 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 workstation 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 (see "Removing a memory module" on page 24 and "Installing a memory module" on page 24). 4. Replace the following components one at a time, in the order shown, restarting the blade workstation each time: a. Replace the DIMM. b. (Trained service technician only) System board assembly Microprocessor 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, Type 7996," on page 11 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 blade workstation emits a 1. (Trained service technician only) Reseat the microprocessor. continuous beep during POST, indicating that the startup (boot) 2. (Trained service technician only) Replace the microprocessor. microprocessor is not working correctly. The blade workstation powers on but does not POST. 1. (Trained service technician only) Reseat the microprocessor. 2. (Trained service technician only) Replace the microprocessor. Chapter 5. Diagnostics 59

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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,
Type
7996,”
on
page
11
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
during
POST
or
by
the
Configuration/Setup
Utility
program
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
workstation
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
(see
“Removing
a
memory
module”
on
page
24
and
“Installing
a
memory
module”
on
page
24).
4.
Replace
the
following
components
one
at
a
time,
in
the
order
shown,
restarting
the
blade
workstation
each
time:
a.
Replace
the
DIMM.
b.
(Trained
service
technician
only)
System
board
assembly
Microprocessor
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,
Type
7996,”
on
page
11
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
blade
workstation
emits
a
continuous
beep
during
POST,
indicating
that
the
startup
(boot)
microprocessor
is
not
working
correctly.
1.
(Trained
service
technician
only)
Reseat
the
microprocessor.
2.
(Trained
service
technician
only)
Replace
the
microprocessor.
The
blade
workstation
powers
on
but
does
not
POST.
1.
(Trained
service
technician
only)
Reseat
the
microprocessor.
2.
(Trained
service
technician
only)
Replace
the
microprocessor.
Chapter
5.
Diagnostics
59