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microprocessor. You can do so by touching an unpainted
metal surface on the computer chassis.
As you continue to work inside the computer, periodi-
cally touch an unpainted metal surface to remove any
static charge your body may have accumulated.
In addition to the preceding precautions, you can also
take the following steps to prevent damage from electro-
static discharge (ESD):
•
When unpacking a static-sensitive component from
its shipping carton, do not remove the component’s
antistatic packing material until you are ready to
install the component in the computer. Just before
unwrapping the antistatic packaging, be sure to dis-
charge static electricity from your body.
•
When transporting a sensitive component, first place
it in an antistatic container or packaging.
•
Handle all sensitive components in a static-safe area.
If possible, use antistatic floor pads and workbench
pads.
The following caution appears throughout this document
to remind you of these precautions:
W
hen Using the Computer
System
As you use the computer system, observe the following
safety guidelines:
•
Be sure the monitor and attached peripherals are
electrically rated to operate with the alternating cur-
rent (AC) power available in your location.
•
To help prevent electric shock, plug the computer
and peripheral power cables into properly grounded
power sources. These cables are equipped with
3-prong plugs to ensure proper grounding. Do not
use adapter plugs or remove the grounding prong
from a cable. If you must use an extension cable, use
a 3-wire cable with properly grounded plugs.
•
To help protect the computer system from sudden,
transient increases and decreases in electrical power,
use a surge suppressor, line conditioner, or un-
interruptible power supply.
•
Be sure nothing rests on the computer system’s
cables and that the cables are not located where they
can be stepped on or tripped over.
•
Do not spill food or liquids on the computer. If the
computer gets wet, see Chapter 7, “Checking Inside
the Computer.”
•
Do not push any objects into the openings of the
computer. Doing so can cause fire or electric shock
by shorting out interior components.
•
Keep the computer away from radiators and heat
sources. Also, do not block cooling vents. Avoid
placing loose papers underneath the computer; do
not place the computer in a closed-in wall unit or on
a rug.
CAUTION: See “Protecting Against Electrostatic
Discharge” in the safety instructions at the front of
this guide.