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 www.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 appropriate 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
the cables correctly after you replace the system board.
Topics:
• Prerequisites
• Procedure
Prerequisites
1 Remove the right-side cover.
2 Remove the memory module.
3 Remove the solid-state drive.
4 Remove the wireless card.
5 Remove the graphics card.
6 Remove the processor-cooling assembly or processor fan.
7 Remove the processor.
Procedure
NOTE
: Note the routing of all cables while removing the system board so that you can replace them correctly.
1 Lay the computer on the left side and disconnect the front-audio cable from the system board.
2 Disconnect the fan cable from the system board.
3 Disconnect the light-bar cable from the system board.
4 Disconnect the processor-power cable from the system board.
5 Press the securing clip and disconnect the power-button board cable from the system board.
6 Disconnect the light-bar cable from the system board.
7 Press the securing clip and disconnect the power-supply unit cable from the system board.
8 Disconnect the USB 2.0 cable from the system board.
9 Disconnect the USB 3.1 (Type-C) cable from the system board.
10 Disconnect the optical-drive power cable from the system board.
11 Disconnect the 3.5-inch hard-drive data cable from the system board.
12 Disconnect the 2.5-inch hard-drive cable from the system board.
13 Disconnect the USB 3.1 Type-C port cable from the system board.
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