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.

Topics:

• Procedure

• Post-requisites

• Entering the Service Tag in the BIOS setup program

Procedure

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

2. Replace the three screws (M2x2 Big Head) that secures the system board to the palm-rest assembly.

3. Slide the I/O-board cable into the system-board connector close the latch to secure the cable.

4. Adhere the tape that secures the I/O-board cable to the system board.

5. Connect the power-adapter port-cable and the speaker cable to the system board.

6. Slide the keyboard daughter-board cable into the connector on the system board and close the latch to secure the cable.

7. Connect the hard-drive cable to the system board.

8. Slide the display cable and the touch-screen board-cable into their respective connectors and close the latches to secure the cables.

9. Adhere the tape that secures the display cable and touch-screen board-cable to the system board.

Post-requisites

1. Replace the heat sink.

2. Replace the fan.

3. Replace the memory modules.

4. Replace the battery.

5. Replace the base cover.

Entering the Service Tag in the BIOS setup

program

1. Turn on or restart your computer.

2. Press F2 when the Dell logo is displayed to enter the BIOS setup program.

3. Navigate to the Main tab and enter the Service Tag in the Service Tag Input field.

NOTE:

Service tag is the alphanumeric identifier located at the back side of your computer.

60 Replacing the system board