Dell Inspiron 17 (5749, Early 2015) - Manual (Page 65)

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 Remove the battery .
2 Remove the base cover .
3 Remove the memory module .
4 Follow the procedure from step 1 to step 3 in removing the hard drive .
5 Follow the procedure from step 1 to step 2 in removing the optical drive .
6 Remove the wireless card .
7 Remove the keyboard .
8 Remove the palm rest .
9 Remove the battery-connector board .
10 Remove the optical-drive connector board .
Procedure
1 Close the display and turn the computer over.
2 Remove the antenna cables from the routing guides on the computer
base.
3 Slide the antenna cables through the slot on the computer base.
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