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82 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 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 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 electrostatic discharge, ground yourself by using a wrist grounding strap or by
periodically touching an unpainted metal surface (such as a connector on the back of the computer).
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 page 81.
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 jack.
4
Disconnect any telephone or network cables from the computer.
NOTICE: To avoid damaging the system board, you must remove the main battery before you service the
computer.
5
Disconnect your computer and all attached devices from their electrical outlets, slide and
hold the battery-bay latch release on the bottom of the computer, and then remove the
battery from the bay.