10 Before You Begin
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Preparing to Work Inside the Computer NOTICE: Only a certified service technician should perform repairs on your
system. Damage due to servicing that is not authorized by Dell is not covered
by your warranty.
NOTICE: T o avoid damaging the computer, perform the following steps before
you begin working inside the computer.
1Make sure that the work surface is clean to prevent scratching the
computer cover.
2Save any work in progress and close all open application programs.
3Turn off the computer and all attached devices.
NOTE: Make sure the computer is turned off and not in suspend-to-disk
or hibernate mode. If you cannot shut down the computer using the
computer’s operating system, press and hold the power button for
4seconds.
4Make sure the computer is undocked.
5Disconnect the computer from the electrical outlet.
6To avoid possible damage to the system board, wait 10 to 20 seconds
and then disconnect any attached devices.
7Disconnect all other external cables from the computer.
8Remove any installed PC Cards or plastic blanks from the PC Card
slot.
9Close 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 and secondary battery (if present) b efore you service the computer.
10 Remove the primary battery from the battery bay and the secondary
battery from the modular bay, if a secondary battery is in use.
11 Remove any installed device in the modular bay.
12 To dissipate any static electricity while you work, use a wrist grounding
strap or periodically touch an unpainted metal surface.