Dell Dimension 4700C - Manual (Page 59)

Removing and Installing Parts
59
Opening the Computer Cover
CAUTION:
Before you begin any of the procedures in this section, follow the safety instructions in the
Product Information Guide.
1 Shut down the computer through the Start menu (see page 53).
2 Ensure that your computer and attached devices are turned off. If your computer and
attached devices did not automatically turn off when you shut down your computer, turn
them off now.
NOTICE:
To disconnect a network cable, first unplug the cable from your computer and then unplug it
from the network wall jack.
3 Disconnect any telephone or telecommunication lines from the computer.
4 Disconnect your computer and all attached devices from their electrical outlets, and then
press the power button to ground the system board.
5 Remove the computer stand, if it is attached (see page 11).
CAUTION:
To guard against electrical shock, always unplug your computer from the electrical outlet
before opening the cover.
NOTICE:
Ensure that there is sufficient space to support the open cover—at least 30 cm (1 ft) of desk
top space.
6 Lay the computer on its side with the back of the computer facing you.
7 Locate the two release buttons shown in the illustration. Then press the two release buttons as
you lift the cover.
NOTICE:
Open the cover slowly to ensure that you do not damage any cables.
8 Raise the back of the cover, and pivot it toward the front of the computer.
NOTE:
Make sure that the computer is oriented with the cable security tab on top, as shown in
the illustration.