Before you open the computer cover, perform the following steps in the sequence
indicated.
CAUTION: Do not attempt to
service the computer yourself, except as explained in your online Dell documentation or
otherwise provided to you. Always follow installation and service instructions closely.
NOTICE: To help avoid possible
damage to the system board, wait 5 seconds after turning off the computer before removing
a component from the system board or disconnecting a device from the computer.
Perform an orderly computer shutdown using the operating
system menu.
Turn off your computer and any devices.
Ground yourself by touching an unpainted metal surface
on the chassis, such as the metal around the card-slot openings at the back of the
computer, before touching anything inside your computer.
While you work, periodically touch an unpainted metal surface on the
computer chassis to dissipate any static electricity that might harm internal components.
Disconnect your computer and devices from their power
sources. Also, disconnect any telephone or telecommunication lines from the computer.
Doing so reduces the potential for personal injury or shock.
In addition, take note of these safety guidelines when appropriate:
When you disconnect a cable, pull on its connector or on its strain-relief loop, not on
the cable itself. Some cables have a connector with locking tabs; if you are disconnecting
this type of cable, press in on the locking tabs before disconnecting the cable. As you
pull connectors apart, keep them evenly aligned to avoid bending any connector pins. Also,
before you connect a cable, make sure both connectors are correctly oriented and aligned.
Handle components and cards with care. Do not touch the components or contacts on a
card. Hold a card by its edges or by its metal mounting bracket. Hold a component such as
a microprocessor chip by its edges, not by its pins.
CAUTION: There is a danger of
a new battery exploding if it is incorrectly installed. Replace the battery only with the
same or equivalent type recommended by the manufacturer. Discard used batteries according
to the manufacturer's instructions.
Static electricity can harm delicate components inside your computer. To prevent static
damage, discharge static electricity from your body before you touch any of your
computer's electronic components, such as the microprocessor. You can do so by touching an
unpainted metal surface on the computer chassis.
As you continue to work inside the computer, periodically touch an unpainted metal
surface to remove any static charge your body may have accumulated.
You can also take the following steps to prevent damage from electrostatic discharge
(ESD):
When unpacking a static-sensitive component from its shipping carton, do not remove the
component from the antistatic packing material until you are ready to install the
component in your computer. Just before unwrapping the antistatic packaging, be sure to
discharge 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.
