Lenovo 981 Replacing the power supply assembly, Removing the screws for the power supply assembly

11.Reconnect the signal cable and power cable of the secondary hard disk drive.

12.Go to “Completing the parts replacement” on page 57.

Replacing the power supply assembly

Attention

Do not open your server or attempt any repair before reading and understanding the Chapter 1 “About this manual” on page 1 and the Safety Information book. To obtain a copy of the Safety Information book, go to:http://www.lenovo.com/support

This section provides instructions on how to replace the power supply assembly.

To replace the power supply assembly, do the following:

1.Remove all media from the drives and turn off all attached devices and the server. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the server.

2.Remove the server cover. See “Removing the server cover” on page 30.

3.Disconnect the power supply assembly cables from the system board and all drives. See “System-board internal connectors” on page 25.

4.Lay the server on its side and remove the four screws at the rear of the chassis that secure the power supply assembly.

Figure 22. Removing the screws for the power supply assembly

5.Slide the power supply assembly to the front of the server and then lift it out of the chassis.

6.Ensure that the new power supply assembly is the correct replacement.

7.Install the new power supply assembly into the chassis so that the screw holes in the power supply assembly are aligned with the corresponding holes in the chassis.

8.Install and tighten the four screws to secure the new power supply assembly. Note: Use only screws provided by Lenovo.

9.Connect the new power supply assembly cables to the system board and each of the drives. See “System-board internal connectors” on page 25.

Chapter 6. Replacing FRUs 43