Lenovo M73 manual Replacing the WiFi units, What to do next, Installing the system fan assembly

9.Install the new system fan assembly by aligning the new rubber mounts that came with the new system fan assembly with the corresponding holes in the chassis, and then push the rubber mounts through the holes. Then, carefully pull on the tips of the rubber mounts from the bottom until the new system fan assembly is secured in place.

Figure 50. Installing the system fan assembly

10.Connect the new system fan assembly cable to the system fan connector on the system board. See “Locating parts on the system board” on page 13.

11.Reinstall the heat sink fan duct. See “Replacing the heat sink and fan assembly” on page 56.

12.Reinstall the hard disk drive. See “Replacing the hard disk drive” on page 46.

What to do next:

•To work with another piece of hardware, go to the appropriate section.

•To complete the replacement, go to “Completing the parts replacement” on page 79.

Replacing the WiFi units

Attention:

Do not open your computer or attempt any repair before reading and understanding the “Important safety information” on page v.

This section provides instructions on how to replace the WiFi units. The WiFi units include a WiFi adapter card, a WiFi card module, and a rear WiFi antenna cable.

Replacing the WiFi units involves the following operations:

•“Removing the WiFi adapter card” on page 69

•“Removing the WiFi card module” on page 70

68ThinkCentre M73 User Guide