Lenovo 4223, 4228, 4229 Replacing the rear fan assembly, Removing the hard disk drive fan assembly

Models: 4229 4223 4228

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5. Press the tab, and then pivot the hard disk drive fan outward to remove it from the chassis.

Figure 25. Removing the hard disk drive fan assembly

6.Position the hard disk drive fan, and then pivot the fan to insert the tab into the chassis.

7.Reconnect the hard disk drive fan cable to the system board.

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 104.

Replacing the rear fan assembly

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 rear fan assembly.

To replace the rear fan assembly, 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 64.

3.Locate the rear fan assembly. See “Locating major FRUs and CRUs” on page 56.

4.Disconnect the rear fan assembly cable from the system fan connector on the system board. See “Locating parts on the system board” on page 58.

Chapter 10. Replacing FRUs 81

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Lenovo 4223, 4228, 4229 manual Replacing the rear fan assembly, Removing the hard disk drive fan assembly