The procedures in this document may require the following tools:
·
Small flat-blade screwdriver
·
Small Phillips screwdriver
14.1.2
Turning Off Your Computer
NOTICE: To avoid losing data, save and close any open files and exit any open programs before you turn off your
computer.
1.
Shut down the operating system:
a.
Save and close any open files, exit any open programs, click Start
→
Shut Down
→
Shut down
→
OK.
The computer turns off after the operating system shutdown process finishes.
2.
Ensure that the computer and any attached devices are turned off. If your computer and attached devices did not
automatically turn off when you shut down your operating system, press and hold the power button for 4 seconds.
14.1.3
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
291H
Safety Information section of this manual.
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.
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 "
292H
Turning Off Your Computer").
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 "
293H
XBay").
7.
Disconnect your computer and all attached devices from their electrical outlets.
8.
Remove the battery (see "
294H
Replacing the Battery").
9.
Press the power button to ground the system board.
10.
Remove the computer stand, if it is attached.
CAUTION:
To guard against electrical shock, always unplug your computer from the
electrical outlet before opening the cover.
NOTICE: Before touching anything inside your computer, ground yourself by touching an
unpainted metal surface, such as the metal at the back of the computer. While you work,
periodically touch an unpainted metal surface to dissipate any static electricity that could harm
internal components.
11.
Remove any installed PC Cards from the PC Card slot (see "
295H
Removing a Card or Blank").
