Dell XPS 15 (L521X, Mid 2012) - Manual (Page 38)

Removing the Coin-Cell Battery
WARNING: Before working inside your computer, read the safety information
that shipped with your computer and follow the steps in "Before You Begin" on
page 8. After working inside your computer, follow the instructions in
"After Working Inside Your Computer" on page 10. For additional safety best
practices information, see the Regulatory Compliance Homepage at
dell.com/regulatory_compliance.
Prerequisites
1 Follow the instructions from step 1 to step 7 in "Removing the Base Cover" on
page 11.
2 Remove the battery. See "Removing the Battery" on page 21.
Procedure
CAUTION: Removing the coin-cell battery resets the BIOS settings to default.
It is recommended that you note the BIOS settings before removing the
coin-cell battery.
1 Lift the connector latch and, using the pull-tab, disconnect the optical-drive cable
from the system board.
2 Peel the optical-drive cable from the fan.
1
4 3 2
1 fan 2 optical-drive cable
3 pull-tab 4 connector latch
38 | Removing the Coin-Cell Battery