9. Install the screw to secure the Wi-Fi card to the system board, and then connect the two Wi-Fi antennacables to the Wi-Fi card.Figure50. Securing the Wi-Fi card and connecting cables10. Install the system-board shield. See “Removing and installing the system-board shield” on page 86.What to do next:• To work with another piece of hardware, go to the appropriate section.• To complete the installation or replacement, go to “Completing the parts replacement” on page 119.Replacing the system boardAttention: Do not open your computer or attempt any repair before reading and understanding the Chapter1 “Safety information” on page 1.This section provides instructions on how to replace the system board.To replace the system board, do the following:1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnectall power cords from electrical outlets and disconnect all cables that are connected to the computer.2. Place a soft, clean towel or cloth on the desk or other flat surface. Hold the sides of your computer andgently lay it down so that the screen is against the surface and the cover is facing up.3. Remove the computer stand. See “Removing and installing the computer stand” on page 73.4. Remove the computer cover. See “Removing the computer cover” on page 76.5. Remove the system-board shield. See “Removing and installing the system-board shield” on page 86.6. Remove the rear I/O assembly. See “Replacing the rear I/O assembly” on page 87.7. Remove the VESA mount bracket. See “Removing and installing the VESA mount bracket” on page 94.8. Remove the heat sink assembly. See “Replacing the heat sink assembly” on page 100.112 ThinkCentre M83z Hardware Maintenance Manual
