Lenovo T42/T42P Manual Do Utilizador
FRU
replacement
notices
This
section
contains
notices
related
to
removing
and
replacing
parts.
Read
this
section
carefully
before
replacing
any
FRU.
Screw
notices
Loose
screws
can
cause
a
reliability
problem.
In
the
ThinkPad
computer,
this
problem
is
addressed
with
special
nylon-coated
screws
that
have
the
following
characteristics:
v
They
maintain
tight
connections.
v
They
do
not
easily
come
loose,
even
with
shock
or
vibration.
v
They
are
harder
to
tighten.
v
Each
one
should
be
used
only
once.
Do
the
following
when
you
service
this
machine:
v
Keep
the
screw
kit
(for
the
P/N,
see
in
your
tool
bag.
v
Always
use
new
screws.
v
Use
a
torque
screwdriver
if
you
have
one.
Tighten
screws
as
follows:
v
Plastic
to
plastic
Turn
an
additional
90
degrees
after
the
screw
head
touches
the
surface
of
the
plastic
part:
90 degrees more
(Cross-section)
v
Logic
card
to
plastic
Turn
an
additional
180
degrees
after
the
screw
head
touches
the
surface
of
the
logic
card:
180 degrees more
(Cross-section)
v
Torque
driver
If
you
have
a
torque
driver,
refer
to
the
“Torque”
column
for
each
step.
FRU
replacement
notices
66
T40/T40p,
T41/T41p,
T42/T42p