Opening The Computer Cover - Dell Dimension 4550 Series Owner's Manual

Opening the Computer Cover

CAUTION: Before you begin any of the procedures in this section,
follow the safety instructions on page 9.
CAUTION: To guard against electrical shock, always unplug your
computer from the electrical outlet before opening the cover.
Shut down the computer (see page 33).
1
NOTICE: To disconnect a network cable, first unplug the cable from your
computer and then unplug it from the network wall jack.
Turn off any attached devices and disconnect them from their
2
electrical outlets.
Disconnect the computer power cable from the wall outlet, and then
3
press the power button to ground the system board.
NOTICE: Ensure that sufficient space exists to support the open cover—at
least 30 cm (1 ft) of desktop space.
Lay the computer on its side so that the arrow on the bottom of the
4
computer points up.
Locate the two release buttons shown in the illustration, and then
5
press the two release buttons as you lift the cover.
release
button
arrow
release button
83
Adding Pa rts