Lenovo 4220, 4222, 4215, 4219, 4221 Replacing the rear fan assembly, Removing the rear fan assembly

Replacing the rear fan assembly

Attention

Do not open your computer or attempt any repair before reading and understanding the “Important safety information” in the ThinkStation Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkStation Safety and Warranty Guide, go to: http://www.lenovo.com/support

This section provides instructions on how to replace the rear fan assembly.

To replace the rear fan assembly, do the following:

1.Remove the computer cover. See “Removing the computer cover” on page 14.

2.Locate the rear fan assembly. See “Locating components” on page 10.

3.Disconnect the rear fan assembly cable from the system fan connector on the system board. See “Locating parts on the system board” on page 11.

4.The rear fan assembly is attached to the chassis by four rubber mounts. Remove the rear fan assembly by breaking or cutting the four rubber mounts and gently pulling the rear fan assembly out of the chassis.

Figure 30. Removing the rear fan assembly

5.Install the new rear fan assembly by aligning the new rubber mounts with the corresponding holes in the chassis and push the rubber mounts through the holes.

Note: The new rear fan assembly you received will have four new rubber mounts attached.

Chapter 2. Installing or replacing hardware 37