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

2. Replace the seven screws (M2x2.5) that secure the system board to palm-rest assembly.

3. Connect the I/O-board cable to the connector on the system board and close the latch to secure the cable.

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

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

6. Connect the hard-drive cable and to the connector on the system board and close the latch to secure the cable (optional).

7. Connect the touchpad cable to the connector on the system board and close the latch to secure the cable.

8. Connect the keyboard back-light cable to the connector on the system board and close the latch to secure the cable.

78 Replacing the system board