Lenovo ThinkPad 300 Service Guide - Page 11

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Chapter 2. Taking care of your ThinkPad computer Though your computer is designed to function reliably in normal work environments, you need to use common sense in handling it. By following these important tips, you will get the most use and enjoyment out of your computer. For the most important instructions for using your computer, see "Read this first" on page v. Important tips Be careful about where and how you work v Store packing materials safely out of the reach of children to prevent the risk of suffocation from plastic bags. v Keep your computer away from magnets, activated cellular phones, electrical appliances, or speakers (within 13 cm or 5″). v Avoid subjecting your computer to extreme temperatures (below 5°C/41°F or above 35°C/95°F). v Some appliances, such as certain portable desktop fans or air purifiers, can produce negative ions. If a computer is close to such an appliance, and is exposed for an extended time to air containing negative ions, it may become electrostatically charged. Such a charge may be discharged through your hands when you touch the keyboard or other parts of the computer, or through connectors on I/O devices connected to it. Even though this kind of electrostatic discharge (ESD) is the opposite of a discharge from your body or clothing to the computer, it poses the same risk of a computer malfunction. Your computer is designed and manufactured to minimize any effects of electrostatic charge. An electrostatic charge above a certain limit, however, can increase the risk of ESD. Therefore, when using the computer close to an appliance that can produce negative ions, give special attention to the following: - Avoid directly exposing your computer to the air from an appliance that can produce negative ions. - Keep your computer and peripherals as far as possible from such an appliance. - Wherever possible, ground your computer to facilitate safe electrostatic discharge. © Copyright Lenovo 2007 3

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Chapter
2.
Taking
care
of
your
ThinkPad
computer
Though
your
computer
is
designed
to
function
reliably
in
normal
work
environments,
you
need
to
use
common
sense
in
handling
it.
By
following
these
important
tips,
you
will
get
the
most
use
and
enjoyment
out
of
your
computer.
For
the
most
important
instructions
for
using
your
computer,
see
“Read
this
first”
on
page
v.
Important
tips
Be
careful
about
where
and
how
you
work
v
Store
packing
materials
safely
out
of
the
reach
of
children
to
prevent
the
risk
of
suffocation
from
plastic
bags.
v
Keep
your
computer
away
from
magnets,
activated
cellular
phones,
electrical
appliances,
or
speakers
(within
13
cm
or
5
″
).
v
Avoid
subjecting
your
computer
to
extreme
temperatures
(below
5°C/41°F
or
above
35°C/95°F).
v
Some
appliances,
such
as
certain
portable
desktop
fans
or
air
purifiers,
can
produce
negative
ions.
If
a
computer
is
close
to
such
an
appliance,
and
is
exposed
for
an
extended
time
to
air
containing
negative
ions,
it
may
become
electrostatically
charged.
Such
a
charge
may
be
discharged
through
your
hands
when
you
touch
the
keyboard
or
other
parts
of
the
computer,
or
through
connectors
on
I/O
devices
connected
to
it.
Even
though
this
kind
of
electrostatic
discharge
(ESD)
is
the
opposite
of
a
discharge
from
your
body
or
clothing
to
the
computer,
it
poses
the
same
risk
of
a
computer
malfunction.
Your
computer
is
designed
and
manufactured
to
minimize
any
effects
of
electrostatic
charge.
An
electrostatic
charge
above
a
certain
limit,
however,
can
increase
the
risk
of
ESD.
Therefore,
when
using
the
computer
close
to
an
appliance
that
can
produce
negative
ions,
give
special
attention
to
the
following:
–
Avoid
directly
exposing
your
computer
to
the
air
from
an
appliance
that
can
produce
negative
ions.
–
Keep
your
computer
and
peripherals
as
far
as
possible
from
such
an
appliance.
–
Wherever
possible,
ground
your
computer
to
facilitate
safe
electrostatic
discharge.
©
Copyright
Lenovo
2007
3