Heat and product ventilation, Heat, Product – Lenovo 3000 User Manual
Page 20: Ventilation
Heat
and
product
ventilation
DANGER
Computers,
ac
adapters,
and
many
accessories
can
generate
heat
when
turned
on
and
when
batteries
are
charging.
Notebook
computers
can
generate
a
significant
amount
of
heat
due
to
their
compact
size.
Always
follow
these
basic
precautions:
v
When
your
computer
is
turned
on
or
the
battery
is
charging,
the
base,
the
palm
rest,
and
some
other
parts
may
become
hot.
Avoid
keeping
your
hands,
your
lap,
or
any
other
part
of
your
body
in
contact
with
a
hot
section
of
the
computer
for
any
extended
length
of
time.
When
you
use
the
keyboard,
avoid
keeping
your
palms
on
the
palm
rest
for
a
prolonged
period
of
time.
Your
computer
generates
some
heat
during
normal
operation.
The
amount
of
heat
depends
on
the
amount
of
system
activity
and
the
battery
charge
level.
Extended
contact
with
your
body,
even
through
clothing,
could
cause
discomfort
or
even
a
skin
burn.
Periodically
take
breaks
from
using
the
keyboard
by
lifting
your
hands
from
the
palm
rest;
and
be
careful
not
to
use
the
keyboard
for
any
extended
length
of
time.
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.
v
When
the
ac
adapter
is
connected
to
an
electrical
outlet
and
your
computer,
it
generates
heat.
Do
not
place
the
adapter
in
contact
with
any
part
of
your
body
while
using
it.
Never
use
the
ac
adapter
to
warm
your
body.
Extended
contact
with
your
body,
even
through
clothing,
may
cause
a
skin
burn.
For
your
safety,
always
follow
these
basic
precautions
with
your
computer:
v
Keep
the
cover
closed
whenever
the
computer
is
plugged
in.
v
Regularly
inspect
the
outside
of
the
computer
for
dust
accumulation.
v
Remove
dust
from
vents
and
any
perforations
in
the
bezel.
More
frequent
cleanings
might
be
required
for
computers
in
dusty
or
high-traffic
areas.
v
Do
not
restrict
or
block
any
ventilation
openings.
v
Do
not
operate
your
computer
inside
furniture,
as
this
might
increase
the
risk
of
overheating.
v
Airflow
temperatures
into
the
computer
should
not
exceed
35°
C
(95°
F).
10
Lenovo
3000
Safety
and
Warranty
Guide