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
“Miscellaneous
parts”
on
page
126)
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.
v
Make
sure
that
you
use
the
correct
screw.
If
you
have
a
torque
screwdriver,
tighten
all
screws
firmly
to
the
torque
shown
in
the
table.
Never
use
a
screw
that
you
removed.
Use
a
new
one.
Make
sure
that
all
of
the
screws
are
tightened
firmly.
v
Ensure
torque
screw
drivers
are
calibrated
correctly
following
country
specifications.
ThinkPad
X300
55
Summary of Contents for 64771TU
Page 1: ...ThinkPad X300 Hardware Maintenance Manual ...
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Page 3: ...ThinkPad X300 Hardware Maintenance Manual ...
Page 6: ...Notices 135 Trademarks 136 iv ThinkPad X300 Hardware Maintenance Manual ...
Page 8: ...vi ThinkPad X300 Hardware Maintenance Manual ...
Page 24: ...16 ThinkPad X300 Hardware Maintenance Manual ...
Page 30: ...22 ThinkPad X300 Hardware Maintenance Manual ...
Page 40: ...32 ThinkPad X300 Hardware Maintenance Manual ...
Page 91: ...Table 22 Removal steps of palm rest continued 8 7 7 8 8 ThinkPad X300 83 ...
Page 117: ...Table 34 Removal steps of antenna assembly continued 2 3 ThinkPad X300 109 ...
Page 142: ...134 ThinkPad X300 Hardware Maintenance Manual ...
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