Replacing The Ac Power Adapter Bracket - Lenovo THINKCENTRE 2491 Hardware Maintenance Manual

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. Disconnect the power cord from the electrical outlet.
3. Disconnect the ac power adapter from the ac power adapter connector on the rear of your computer.
See "Locating connectors on the rear of your computer" on page 70.
4. Connect the new ac power adapter to the ac power adapter connector on the chassis and an workable
electrical outlet.
Figure 32. Connecting the ac power adapter
5. Go to "Completing the parts replacement" on page 98.

Replacing the ac power adapter bracket

Attention:
Do not open your computer or attempt any repair before reading and understanding the "Important safety information"
in the ThinkCentre User Guide. To obtain a copy of the ThinkCentre User Guide, go to:
http://www.lenovo.com/ThinkCentreUserGuides
This section provides instructions on how to replace the ac power adapter bracket.
To replace the ac power adapter bracket, do the following:
1. Remove any media from the drives and turn off all attached devices and the computer.
2. Disconnect the power cord from the electrical outlet.
3. Disconnect the ac power adapter from the ac power adapter connector on the rear of your computer.
See "Locating connectors on the rear of your computer" on page 70.
.
Chapter 8 Replacing FRUs
95