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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.
Remove the server cover. See “Removing the server cover” on page 18.
Disconnect the power supply assembly cables from the system board and all
drives. See “System-board internal connectors” on page 14.
Lay the server on its side and remove the four screws at the rear of the chassis
that secure the power supply assembly.
Slide the power supply assembly to the front of the server and then lift it out
of the chassis.
Ensure that the new power supply assembly is the correct replacement.
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
Install and tighten the four screws to secure the new power supply assembly.
Use only screws provided by Lenovo.
Connect the new power supply assembly cables to the system board and each
of the drives. See “System-board internal connectors” on page 14.
What to do next:
To work with another piece of hardware, go to the appropriate section.
To complete the replacement, go to “Completing the parts replacement” on
Figure 24. Removing the screws for the power supply assembly
Chapter 5. Installing or replacing customer replaceable units