Heat and product ventilation, Cd and dvd drive safety, Heat – IBM M400 User Manual
Page 11: Product, Ventilation, Drive, Safety
shorten
the
life
of
the
battery
and
can
also
pose
a
safety
hazard.
Do
not
let
rechargeable
Lithium-Ion
batteries
completely
discharge
or
store
these
batteries
in
a
discharged
state.
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
General
safety
guidelines
ix