Service Manual

Replacing 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.

Procedure

1. Using the alignment posts, place the system board on the palm-rest and keyboard assembly and align the screw holes on the system

board with the screw holes on the palm-rest assembly.

2. Replace the 2 screws (M2x3) that secure the system board to the palm-rest and keyboard assembly.

3. Align the screw holes on the type-C USB bracket with the screw holes on the system board and replace the three screws (M2x4) that

secure the type-C USB bracket to system board.

4. Connect the coin-cell battery cable to the system board.

5. Connect the fingerprint-reader cable to the system board and close the latch.

6. Connect the keyboard-back light cable to the system board and close the latch.

7. Connect the display cable to the system board.

8. Place the display-cable bracket on the system board and replace the two screws (M1.6x1.8) that secure the bracket to the system

board.

9. Adhere the tape that secures the display-cable bracket to the system board.

46 Replacing the system board