CAUTION:

Never remove the cover on a power supply or any part that has the following label attached.

Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components. If you suspect a problem with one of these parts, contact a service technician.

To replace the power supply assembly, do the following:

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

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

3.Remove the front bezel. See “Removing and reinstalling the front bezel” on page 14.

4.Pivot the drive bay assembly upward, remove the two screws that secure the heat sink fan duct, and then lift the heat sink fan duct out of the chassis.

Figure 23. Removing the heat sink fan duct

5.Disconnect the power supply assembly cables from all drives and from the 24-pin power connector and 4-pin power connector on the system board. See “Locating parts on the system board” on page 9.

Note: You might also need to release the power supply assembly cables from some cable clips or ties that secure the cables to the chassis. Make sure that you note the cable routing before disconnecting the cables.

6.At the rear of the computer, remove the three screws that secure the power supply assembly. Press the power supply clip 1 downward to release the power supply assembly and then slide the power supply assembly to the front of the computer. Lift the power supply assembly out of the computer.

28ThinkCentre User Guide

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Lenovo 4163, 5042, 5046 manual Removing the heat sink fan duct

5042, 4163, 5046 specifications

The Lenovo 5046, 4163, and 5042 are part of Lenovo's diverse range of innovative computing solutions, designed to cater to different needs in both personal and professional use. Each model incorporates advanced features and technologies that enhance performance, usability, and efficiency.

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