Lenovo ThinkCentre A70 7099 Hardware Maintenance Manual page 105

4. Lay the computer on its side and remove the four screws that secure the
power supply assembly.
Figure 17. Removing the screws that secure the power supply assembly
5. Slide the power supply assembly a little bit forward and then 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 or accept
universal input, 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.
v If the voltage supply range in your local country or region is 100–127 V ac,
set the voltage-selection switch to 115 V.
Chapter 8. Replacing FRUs - Tower computers
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