Before Working Inside Your Computer; Turning Off Your Computer; After Working Inside Your Computer - Dell XY689 Owner's Manual

Before working inside your computer

To avoid damaging your computer, perform the following steps before you begin working inside the
computer.
1. Ensure that you follow the
2. Ensure that your work surface is flat and clean to prevent the computer cover from being scratched.
3. Turn off your computer, see
CAUTION: To disconnect a network cable, first unplug the cable from your computer and
then unplug the cable from the network device.
4. Disconnect all the network cables from the computer.
5. Disconnect your computer and all attached devices from the electrical outlets.
6. Press and hold the power button while the computer is unplugged to ground the system board.
7. Remove the cover.
CAUTION: 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 static electricity, which could
harm internal components.

Turning off your computer

After working inside your computer

After you complete any replacement procedure, ensure you connect any external devices, cards, and
cables before turning on your computer.
CAUTION: To avoid damage to the computer, use only the battery designed for this particular
Dell computer. Do not use batteries designed for other Dell computers.
1. Connect any external devices, such as a port replicator or media base, and replace any cards, such as
an ExpressCard.
2. Connect any telephone or network cables to your computer.
CAUTION: To connect a network cable, first plug the cable into the network device and then
plug it into the computer.
3. Replace the battery.
4. Replace the base cover.
5. Connect your computer and all attached devices to their electrical outlets.
6. Turn on your computer.
8
Safety instructions.
Turning off your computer.