Lenovo ThinkCentre M80 Hardware Maintenance Manual page 91

4. Lay the computer on its side and remove the four screws that secure the power supply assembly. Then,
slide the power supply assembly to the front of the chassis.
Figure 17. Removing the power supply assembly screws
5. Pivot the power supply assembly as shown and then lift the power supply assembly to remove it
from the chassis.
Figure 18. Removing the power supply assembly
6. Make sure that the new power supply assembly is the correct replacement. Some power supply
assemblies automatically sense the voltage, some power supply assemblies are voltage specific, and
some power supply assemblies have a voltage-selection switch. If your power supply assembly has
a voltage-selection switch, make sure that you set the voltage-selection switch to match the voltage
available at your electrical outlet. If necessary, use a ballpoint pen to slide the voltage-selection switch
to the correct position.
.
Chapter 8 Installing or replacing hardware: 4165, 7179, 7182, 7490, 7493, 7511, and 7521
83