6.Pull on the tips of the rubber mounts until the rear fan assembly is secured in place.

Figure 31. Installing the rear fan assembly

7.Connect the rear fan assembly cable to the system fan connector on the system board.

What to do next:

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

vTo complete the replacement, go to “Completing the parts replacement” on page 40.

Replacing the keyboard

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

38User Guide

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Lenovo 4222, 4220, 4215, 4219, 4221 manual Replacing the keyboard, Installing the rear fan assembly