Dell Inspiron 20 (3048, Early 2014) - Manual (Page 71)

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 system setup after you replace the
system board.
NOTE: Replacing the system board removes any changes you have
made to the BIOS using System Setup. 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 Follow the procedure from step 1 to step 5 in “Removing the Stand
Assembly ”.
2 Remove the back cover .
3 Remove the system-board shield .
4 Remove the VESA-mount bracket .
5 Remove the memory module(s) .
6 Remove the wireless card .
7 Remove the heat sink .
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