Lenovo ThinkPad T500 Hardware Maintenance Manual - Page 26

Strategy, replacing, drive, Important, notice, system, board, error, message - screen replacement

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v If you are instructed to replace a FRU but the replacement does not correct the problem, reinstall the original FRU before you continue. v Some computers have both a processor board and a system board. If you are instructed to replace either the processor board or the system board, and replacing one of them does not correct the problem, reinstall that board, and then replace the other one. v If an adapter or a device consists of more than one FRU, any of the FRUs may be the cause of the error. Before replacing the adapter or device, remove the FRUs, one by one, to see if the symptoms change. Replace only the FRU that changed the symptoms. Attention: The setup configuration on the computer you are servicing may have been customized. Running Automatic Configuration may alter the settings. Note the current configuration settings (using the View Configuration option); then, when service has been completed, verify that those settings remain in effect. Strategy for replacing a hard disk drive Always try to run a low-level format before replacing a hard disk drive. This will cause all customer data on the hard disk to be lost. Be sure that the customer has a current backup of the data before doing this task. Attention: The drive startup sequence in the computer you are servicing may have been changed. Be extremely careful during write operations such as copying, saving, or formatting. If you select an incorrect drive, data or programs can be overwritten. Important notice for replacing a system board Some components mounted on a system board are very sensitive. Improper handling of a system board can cause damage to those components, and may cause a system malfunction. Attention: When handling a system board: v Do not drop a system board or apply any excessive force to it. v Avoid rough handling of any kind. v Avoid bending a system board and hard pushing to prevent cracking at each BGA (Ball Grid Array) chipset. How to use error message Use the error codes displayed on the screen to diagnose failures. If more than one error code is displayed, begin the diagnosis with the first error code. Whatever causes the first error code may also cause false error codes. If no error code is displayed, see whether the error symptom is listed in the Symptom-to-FRU Index for the computer you are servicing. 18 ThinkPad T500 and W500 Hardware Maintenance Manual

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v
If
you
are
instructed
to
replace
a
FRU
but
the
replacement
does
not
correct
the
problem,
reinstall
the
original
FRU
before
you
continue
.
v
Some
computers
have
both
a
processor
board
and
a
system
board.
If
you
are
instructed
to
replace
either
the
processor
board
or
the
system
board,
and
replacing
one
of
them
does
not
correct
the
problem,
reinstall
that
board,
and
then
replace
the
other
one.
v
If
an
adapter
or
a
device
consists
of
more
than
one
FRU,
any
of
the
FRUs
may
be
the
cause
of
the
error.
Before
replacing
the
adapter
or
device,
remove
the
FRUs,
one
by
one,
to
see
if
the
symptoms
change.
Replace
only
the
FRU
that
changed
the
symptoms.
Attention:
The
setup
configuration
on
the
computer
you
are
servicing
may
have
been
customized.
Running
Automatic
Configuration
may
alter
the
settings.
Note
the
current
configuration
settings
(using
the
View
Configuration
option);
then,
when
service
has
been
completed,
verify
that
those
settings
remain
in
effect.
Strategy
for
replacing
a
hard
disk
drive
Always
try
to
run
a
low-level
format
before
replacing
a
hard
disk
drive.
This
will
cause
all
customer
data
on
the
hard
disk
to
be
lost.
Be
sure
that
the
customer
has
a
current
backup
of
the
data
before
doing
this
task.
Attention:
The
drive
startup
sequence
in
the
computer
you
are
servicing
may
have
been
changed.
Be
extremely
careful
during
write
operations
such
as
copying,
saving,
or
formatting.
If
you
select
an
incorrect
drive,
data
or
programs
can
be
overwritten.
Important
notice
for
replacing
a
system
board
Some
components
mounted
on
a
system
board
are
very
sensitive.
Improper
handling
of
a
system
board
can
cause
damage
to
those
components,
and
may
cause
a
system
malfunction.
Attention:
When
handling
a
system
board:
v
Do
not
drop
a
system
board
or
apply
any
excessive
force
to
it.
v
Avoid
rough
handling
of
any
kind.
v
Avoid
bending
a
system
board
and
hard
pushing
to
prevent
cracking
at
each
BGA
(Ball
Grid
Array)
chipset.
How
to
use
error
message
Use
the
error
codes
displayed
on
the
screen
to
diagnose
failures.
If
more
than
one
error
code
is
displayed,
begin
the
diagnosis
with
the
first
error
code.
Whatever
causes
the
first
error
code
may
also
cause
false
error
codes.
If
no
error
code
is
displayed,
see
whether
the
error
symptom
is
listed
in
the
Symptom-to-FRU
Index
for
the
computer
you
are
servicing.
18
ThinkPad
T500
and
W500
Hardware
Maintenance
Manual