Heat
and
product
ventilation
Computers
generate
heat
when
turned
on
and
when
batteries
are
charging.
Notebook
PCs
can
generate
a
significant
amount
of
heat
due
to
their
compact
size.
Always
follow
these
basic
precautions:
v
Do
not
leave
the
base
of
your
computer
in
contact
with
your
lap
or
any
part
of
your
body
for
an
extended
period
when
the
computer
is
functioning
or
when
the
battery
is
charging.
Your
computer
produces
some
heat
during
normal
operation.
Extended
contact
with
the
body
could
cause
discomfort
or,
potentially,
a
skin
burn.
v
Do
not
operate
your
computer
or
charge
the
battery
near
flammable
materials
or
in
explosive
environments.
v
Ventilation
slots,
fans
and/or
heat
sinks
are
provided
with
the
product
for
safety,
comfort,
and
reliable
operation.
These
features
might
inadvertently
become
blocked
by
placing
the
product
on
a
bed,
sofa,
carpet,
or
other
flexible
surface.
Never
block,
cover
or
disable
these
features.
CD
and
DVD
drive
safety
CD
and
DVD
drives
spin
discs
at
a
high
speed.
If
a
CD
or
DVD
is
cracked
or
otherwise
physically
damaged,
it
is
possible
for
the
disc
to
break
apart
or
even
shatter
when
the
CD
drive
is
in
use.
To
protect
against
possible
injury
due
to
this
situation,
and
to
reduce
the
risk
of
damage
to
your
machine,
do
the
following:
v
Always
store
CD/DVD
discs
in
their
original
packaging
v
Always
store
CD/DVD
discs
out
of
direct
sunlight
and
away
from
direct
heat
sources
v
Remove
CD/DVD
discs
from
the
computer
when
not
in
use
v
Do
not
bend
or
flex
CD/DVD
discs,
or
force
them
into
the
computer
or
their
packaging
v
Check
CD/DVD
discs
for
cracks
before
each
use.
Do
not
use
cracked
or
damaged
discs
Additional
safety
information
DANGER
Electric
current
from
power,
telephone,
and
communication
cables
is
hazardous.
To
avoid
shock
hazard,
connect
and
disconnect
cables
as
shown
below
when
installing,
moving,
or
opening
the
covers
of
this
product
or
attached
devices.
If
the
3-pin
power
cord
is
provided
with
this
product,
it
must
be
used
with
a
properly
grounded
outlet.
Important
safety
information
vii
Summary of Contents for ThinkPad G40 Series
Page 1: ...ThinkPad G40 Series Service and Troubleshooting Guide...
Page 2: ......
Page 3: ...ThinkPad G40 Series Service and Troubleshooting Guide...
Page 16: ...xiv ThinkPad G40 Series Service and Troubleshooting Guide...
Page 18: ...xvi ThinkPad G40 Series Service and Troubleshooting Guide...
Page 22: ...xx ThinkPad G40 Series Service and Troubleshooting Guide...
Page 32: ...Caring for your ThinkPad computer 10 ThinkPad G40 Series Service and Troubleshooting Guide...
Page 60: ...Replacing the battery 38 ThinkPad G40 Series Service and Troubleshooting Guide...
Page 66: ...Getting help and service 44 ThinkPad G40 Series Service and Troubleshooting Guide...
Page 70: ...48 ThinkPad G40 Series Service and Troubleshooting Guide...
Page 98: ...76 ThinkPad G40 Series Service and Troubleshooting Guide...
Page 99: ...Appendix C Notices 77...
Page 101: ...Appendix C Notices 79...
Page 107: ...Appendix C Notices 85...
Page 108: ...86 ThinkPad G40 Series Service and Troubleshooting Guide...
Page 109: ...Appendix C Notices 87...
Page 110: ...88 ThinkPad G40 Series Service and Troubleshooting Guide...
Page 112: ...90 ThinkPad G40 Series Service and Troubleshooting Guide...
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Page 114: ...Part Number 92P2196 1P P N 92P2196...
