26. Lift the top right edge of the system board to disconnect it from the I/O daughter card, then carefully lift the system board out of the computer.
27. Unroute the power cable.
1 Secure Digital cable connector 2 ExpressCard-cage cable connector
3 DC power cable connector
5 system board
Replacing the System Board Assembly
Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the
Regulatory Compliance Homepage at: www.dell.com/regulatory_compliance.
CAUTION:
Ensure no loose cables get caught beneath the system board.
To replace the system board, follow the removal steps in reverse order:
1. Route the power cable and place the power connector in the base assembly.
2. Insert the bottom edge of the system board into the base of the computer, ensuring that the system board is placed under the metal latch mechanism.
3. Lower the top of the system board to reconnect the power, USB, and serial connectors.
4. Connect the top right of the system board to the I/O daughter card connector.
5. Place the top side of the system board in the base.
6. Replace the five M2.5 x 5-mm screws on the top of the system board.
7. Connect the ExpressCard cable to the system board.
8. Connect the Secure Digital card cable to the system board.
9. Connect the power cable.
10. Replace the card cage (see
11. Replace the palm rest assembly (see
12. Replace the speaker/fingerprint reader cover (see
13. Replace the keyboard (see
14. Replace the display assembly (see
15. Replace the optical drive (see
16. Replace the fan (see
Replacing the
4 I/O daughter card (expansion ports) cable connector
6 M2.5 x 5-mm system board screws (5)
Replacing the Card
Cage).
Replacing the Palm Rest
Replacing the Right- Speaker and Fingerprint Reader
Replacing the
Keyboard).
Replacing the Display
Assembly).
Removing the Optical
Drive).
Fan).
Assembly).
Cover).