Lenovo 6445 用户手册

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页码 112
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
 
the
 
parts
 
listing
 
in
 
the
 
Hardware
 
Maintenance
 
Manual
 
to
 
determine
 
which
 
components
 
are
 
customer
 
replaceable
 
units
 
(CRU)
 
and
 
which
 
components
 
are
 
field
 
replaceable
 
units
 
(FRU).
 
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
   
No
 
error
 
LEDs
 
are
 
lit
 
on
 
the
 
operator
 
information
 
panel.
 
v
   
Memory
 
mirroring
 
or
 
memory
 
sparing
 
does
 
not
 
account
 
for
 
the
 
discrepancy.
 
v
   
The
 
memory
 
modules
 
are
 
seated
 
correctly.
 
v
   
You
 
have
 
installed
 
the
 
correct
 
type
 
of
 
memory
 
(see
 
 
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
 
server
 
might
 
have
 
automatically
 
disabled
 
a
 
memory
 
bank
 
when
 
it
 
detected
 
a
 
problem,
 
or
 
a
 
memory
 
bank
 
might
 
have
 
been
 
manually
 
disabled.
2.
   
Check
 
the
 
POST
 
error
 
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.
   
Run
 
memory
 
diagnostics
 
(see
 
“Running
 
the
 
diagnostic
 
programs”
 
in
 
the
 
Hardware
 
Maintenance
 
Manual
).
 
4.
   
Make
 
sure
 
that
 
there
 
is
 
no
 
memory
 
mismatch
 
when
 
the
 
server
 
is
 
at
 
the
 
minimum
 
memory
 
configuration
 
(two
 
512
 
MB
 
DIMMs).
 
5.
   
Add
 
one
 
pair
 
of
 
DIMMs
 
at
 
a
 
time,
 
making
 
sure
 
that
 
the
 
DIMMs
 
in
 
each
 
pair
 
are
 
matching.
 
Install
 
the
 
DIMMs
 
in
 
the
 
sequence
 
that
 
is
 
described
 
in
 
6.
   
Reseat
 
the
 
DIMMs.
 
7.
   
Replace
 
the
 
following
 
components
 
one
 
at
 
a
 
time,
 
in
 
the
 
order
 
shown,
 
restarting
 
the
 
server
 
each
 
time:
 
a.
   
DIMMs
 
b.
   
(Trained
 
service
 
technician
 
only)
 
System
 
board
 
Multiple
 
rows
 
of
 
DIMMs
 
in
 
a
 
branch
 
are
 
identified
 
as
 
failing.
 
1.
   
Reseat
 
the
 
DIMMs;
 
then,
 
restart
 
the
 
server.
 
2.
   
Replace
 
the
 
lowest-numbered
 
DIMM
 
pair
 
of
 
those
 
that
 
are
 
identified;
 
then,
 
restart
 
the
 
server.
 
Repeat
 
as
 
necessary.
 
3.
   
(Trained
 
service
 
technician
 
only)
 
Replace
 
the
 
system
 
board.
 
 
Chapter
 
5.
 
Solving
 
problems
 
69