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124 Adding and Replacing Parts
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Before Working Inside Your Computer
Use the following safety guidelines to help protect your computer from potential damage and to
help ensure your own personal safety.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the
Product Information Guide
.
CAUTION: 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 processor
by its edges, not by its pins.
NOTICE: Only a certified service technician should perform repairs on your computer. Damage due to
servicing that is not authorized by Dell is not covered by your warranty.
NOTICE: When you disconnect a cable, pull on its connector or on its pull-tab, 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 you disconnect the cable. As you pull connectors apart, keep them evenly aligned
to avoid bending any connector pins. Also, before you connect a cable, ensure that both connectors are
correctly oriented and aligned.
NOTICE: To avoid damaging the computer, perform the following steps before you begin working inside
the computer.
1
Ensure that the work surface is flat and clean to prevent the computer cover from being
scratched.
2
Turn off your computer (see "Turning Off Your Computer" on page 123).
3
If the computer is connected to a docking device (docked), undock it. See the documentation
that came with your docking device for instructions.
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it
from the network wall connector.
4
Disconnect any telephone or network cables from the computer.
5
Close the display and turn the computer upside down on a flat work surface.
NOTICE: To avoid damaging the system board, you must remove the main battery before you service the
computer.
6
Remove any installed modules, including a second battery, if installed (see "Media Bay" on
page 142).
7
Disconnect your computer and all attached devices from their electrical outlets.
8
Remove the battery (see "Replacing the Battery" on page 38).
9
Press the power button to ground the system board.
10
Remove any installed PC Cards from the PC Card slot (see "Removing a Card or Blank" on
page 69).