Replacing The Power Supply - Lenovo 7269D7U - Topseller M58e Sff E7500 2.93G 3Gb 320Gb Dvdrw W7p/Xpp Hardware Maintenance Manual

4. Install a new battery.
5. Close the computer cover and connect the cables. See "System board connectors" on page 98.
Note: When the computer is turned on for the first time after replacing the battery, an error message
might be displayed. This is normal after replacing the battery.
6. Go to "Completing the FRU replacement" on page 118.

Replacing the power supply

Attention
Do not open your computer or attempt any repair before reading and understanding the "Important safety information"
in the ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkCentre
Safety and Warranty Guide, go to:http://www.lenovo.com/support
Attention
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.
This section provides instructions on how to remove and replace the power supply.
1. Remove the four screws at the rear of the chassis that secure the power supply assembly.
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ThinkCentre Hardware Maintenance Manual