Dell XPS 13 (9343, Early 2015) - Manual (Page 61)

Removing the System Board
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in
Before Working Inside Your Computer . After working inside your
computer, follow the instructions in After Working Inside Your
Computer . For more safety best practices, see the Regulatory
Compliance home page at dell.com/regulatory_compliance.
NOTE: Your computer’s Service Tag is stored in the system board. You
must enter the Service Tag in the BIOS setup program after you replace
the system board.
NOTE: Replacing the system board removes any changes you have
made to the BIOS using the BIOS setup program. You must make the
desired changes again after you replace the system board.
NOTE: Before disconnecting the cables from the system board, note the
location of the connectors so that you can reconnect them correctly
after you replace the system board.
Prerequisites
1 Remove the base cover .
2 Remove the battery .
3 Remove the wireless card .
4 Remove the solid-state drive .
5 Remove the heat sink .
Procedure
1 Peel off the tape that secures the antenna cables and power-adapter port
cable to the system board.
2 Disconnect the camera cable, touch-screen cable (optional), power-
adapter port cable, and coin-cell battery cable from the system board.
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