Dell XPS 13 (L322X, Early 2013) - Manual (Page 47)

Postrequisites
1 Replace the fan. See "Replacing the Fan" on page 33.
2 Replace the heat sink. See "Replacing the Heat Sink" on page 30.
3 Replace the solid-state drive. See "Replacing the Solid-State Drive" on
page 28.
4 Replace the mini-card. See "Replacing the Mini-Card" on page 25.
5 Replace the right speaker. See "Replacing the Speakers" on page 22.
6 Replace the battery. See "Replacing the Battery" on page 18.
7 Replace the power-light board. See "Replacing the Power-Light Board" on
page 16.
8 Replace the base cover. See "Replacing the Base Cover" on page 14.
9 Follow the instructions in "After Working Inside Your Computer" on page 11.
Entering the Service Tag in BIOS
1 Turn on the computer.
2 Press <F2> during POST to enter the system setup program.
3 Navigate to the main tab and enter the service tag in the Service Tag
Setting field.
System Board 47