10. Slide the power-supply assembly toward the front of the chassis and remove
it from the computer.
11. Install the new power-supply assembly into the chassis so that the screw holes
in the power-supply assembly align with those in the chassis.
Note: Use only the screws provided by Lenovo.
12. Install and tighten the four screws at the rear of the chassis to secure the
power-supply assembly.
13. Check the position of the voltage-selection switch on the rear of the computer.
Use a ballpoint pen to slide the switch, if necessary.
Note: Some computers do not have a voltage switch. These computers
automatically control the voltage.
vIf the voltage supply range is 100–127 V ac, set the switch to 115 V.
vIf the voltage supply range is 200–240 V ac, set the switch to 230 V.
14. Reconnect all the power supply cables to the drives and the system board.
15. Go to “Completing the FRU replacement” on page 179.
162 HardwareMaintenance Manual