Dell XPS 15 (L521X, Mid 2012) - Manual (Page 45)

Removing the I/O Board
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.
3 Remove the mSATA card. See "Removing the mSATA Card" on page 36.
Procedure
1 Disconnect the I/O-board grounding cable from the system board.
2 Lift the connector latch and, using the pull-tab, disconnect the I/O-board cable
from the system board.
3 Peel the tapes that secure the I/O-board cable and the I/O-board grounding cable
to the palm-rest assembly.
4 Remove the screw that secures the I/O board to the palm-rest assembly.
5 Lift the I/O board along with its cables away from the palm-rest assembly.
2
6
7
5
1
3 4
1
3
5
7
tapes (2)
screw
connector latch
I/O-board cable
2 I/O board
4 I/O-board grounding cable
6 pull-tab
Removing the I/O Board | 45