Dell Latitude Z (Late 2009) - Manual (Page 27)

18. Remove the system board from the computer.
Replacing a System Board Without Latitude ON
To replace the system board, perform the above steps in reverse order.
Removing a System Board With Latitude ON
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the battery from the computer.
3. Remove the hinge covers from the computer.
4. Remove the access panel from the computer.
5. Disconnect the hard drive and touch pad cables from the system board.
6. Disconnect the coin-cell, speaker, wireless smart card, WLAN, Bluetooth®, fingerprint, and volume control board cables from their connectors on the
system board.
7. Disconnect the wireless card antennas from the connectors on the WWAN card.
8. Remove the antenna cables from their routing paths in the computer.
9. Disconnect the antenna from its connectors on the Secure Digital I/O (SDIO) board.
10. Remove the screws that secure the system board to the computer chassis.
11. Remove the remaining cables from the computer.
15. Carefully flip over the system board and rest it on top of the computer chassis.
11. Disconnect the network interface cable from its connector on the system board.
14. Disconnect the LVDS cable from its connector on the system board.
15. Disconnect the camera cable from its connector on the system board.
16. Disconnect the power cable from its connector on the system board.
18. Remove the system board from the computer.
Replacing a System Board with Latitude ON
To replace the system board with Latitude ON, perform the above steps in reverse order.
Caution: Some cables remain attached to the underside of the system board.