Replacing The System Fan - Lenovo ThinkCentre M72e Hardware Maintenance Manual

3. Hold the thicker end of the rear WiFi antennas and unscrew the WiFi antennas from the rear of the
computer.
Figure 65. Removing the rear WiFi antennas
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 123.

Replacing the system fan

Attention: Do not open your computer or attempt any repair before reading and understanding the "Important
safety information" on page 1.
This section provides instructions on how to replace the system fan.
To replace the system fan, do the following:
1. Turn off the computer and disconnect all power cords from electrical outlets.
2. Remove the computer cover. See "Removing the computer cover" on page 77.
3. Locate the system fan in the computer. See "Locating FRUs and CRUs" on page 69.
4. Remove the heat sink for easier access to the system fan. See "Replacing the heat sink" on page 99.
5. Disconnect the system fan cable from the system board. See "Locating parts on the system board"
on page 72.
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Chapter 9 Replacing FRUs
117