Service Manual

Replacing 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.

Procedure

NOTE: Make sure that no cables are under the system board.

1 Slide the system board into the slot on the chassis and align the screw holes on the

system board with the screw holes on the chassis.

2 Replace the screws that secure the system board to the chassis.

3 Align and snap the back panel onto the chassis.

4 Align the screw holes on the back panel with the screw holes on the chassis and

replace the screws that secure the back panel to the chassis.

5 Connect the USB-port cable, front-panel light board cable, and power-button board

cable to the system board.

For more information on the location of connectors, see “System- board

components”.

Post-requisites

1 Replace the wireless card.

2 Replace the memory modules.

3 Replace the video-card fan.

4 Replace the processor.

5 Replace the processor heat sink.