Removing the system board
NOTE: 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.
Prerequisites
1. Remove the optical drive.
2. Remove the base cover.
3. Remove the battery.
4. Remove the memory modules.
5. Remove the wireless card.
6. Remove the solid-state drive/Intel Optane.
7. Remove the fan.
8. Remove the heat sink.
Procedure
1. Disconnect the power-adapter port cable from the system board.
2. Disconnect the speaker cable from the system board.
3. Open the latch and disconnect the keyboard from the system board.
4. Open the latch and disconnect the keyboard back-light cable from the system board.
5. Open the latch and disconnect the touchpad cable from the system board.
6. Open the latch and disconnect the hard-drive cable from the system board.
7. Open the latch and disconnect the I/O board cable from the system board.
8. Open the latch and disconnect the finger-print reader cable from the system board.
9. Open the latch and disconnect the power-button board cable from the system board.
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