Dell XPS 730 (Late 2008) - Manual (Page 22)

20 Replacing the Theater Lighting Unit
3 Remove the two captive screws and lift the cover of the battery unit.
4 Replace the batteries with a new pair.
5 Replace the cover of the battery unit and ensure that the screws are secure.
6 Replace the computer cover (see "Replacing the Computer Cover" on
page 17).
7 Connect your computer and devices to electrical outlets, and then turn
them on.
Replacing the Theater Lighting Card
1 Follow the procedures in "Before You Begin" on page 13.
2 Remove the computer cover (see "Replacing the Computer Cover" on
page 17).
1 captive screws 2 batteries
2
1