Strategy
for
replacing
a
hard
disk
drive
Always
try
to
run
a
low-level
format
before
replacing
a
hard
disk
drive.
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
messages
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.
Strategy
for
replacing
FRUs
for
CTO,
CMV,
and
GAV
Product
definition
Dynamic
Configure
To
Order
(CTO)
This
provides
the
ability
for
a
customer
to
configure
an
IBM
®
or
a
Lenovo
solution
from
an
eSite,
and
have
this
configuration
sent
to
fulfillment,
where
it
is
built
and
shipped
directly
to
the
customer.
The
machine
label,
PC
Entitlement
Warehouse
(PEW),
eSupport,
and
the
HMM
will
load
these
products
as
the
4-digit
MT
and
3-digit
model,
where
model
=
“CTO”
(Example:
1829-CTO).
Custom
Model
Variant
(CMV)
This
is
a
unique
configuration
that
has
been
negotiated
between
IBM
or
Lenovo
and
the
customer.
A
unique
4-digit
MT
and
3-digit
model
is
provided
to
the
customer
to
place
orders
(Example:
1829-W15).
A
CMV
is
a
special
bid
offering.
Therefore,
it
is
NOT
generally
announced.
v
The
MTM
portion
of
the
machine
label
is
the
4-digit
MT
and
3-digit
model,
where
model
=
“CTO”
(Example:
1829-CTO).
The
PRODUCT
ID
portion
of
the
machine
label
is
the
4-digit
MT
and
3-digit
CMV
model
(Example:
1829-W15).
v
The
PEW
record
is
the
4-digit
MT
and
3-digit
model,
where
model
=
“CTO”
(Example:
1829-CTO).
v
eSupport
will
show
both
the
CTO
and
CMV
machine
type
models
(Example:
1829-CTO
and
1829-W15
will
be
found
on
the
eSupport
site.)
v
The
HMM
will
have
the
4-digit
MT
and
3-digit
CTO
model
only
(Example:
1829-CTO).
Again,
CMVs
are
custom
models
and
are
not
found
in
the
HMM.
Important
service
information
4
MT
1951,
1952,
1953,
1954,
1955,
1956,
2007,
2008,
2009,
2613,
2623,
and
2637
