Replacing The Heat Sink And Fan Assembly - Lenovo ThinkCentre M58e 7268 User Manual

4. Remove the four screws at the rear of the chassis that secure the power
supply assembly.
Figure 27. Removing the power supply assembly retaining screws
5. Lift the power supply assembly out of the chassis.
6. Ensure that the new power supply assembly is the correct replacement. If
your power supply assembly has a voltage-selection switch, ensure 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 switch to a
different position.
v If the voltage supply range in your local country or region is 100–127 V AC,
set the switch to 115 V.
v If the voltage supply range in your local country or region is 200–240 V AC,
set the switch to 230 V.
7. 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.
8. Install the four screws to secure the power supply.
Note: Use only the screws provided by Lenovo.
9. Reconnect the power supply cables to the system board and the drives.
10. Go to "Completing the parts replacement" on page 44.

Replacing the heat sink and fan assembly

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 was
included with your computer. To obtain a copy of the ThinkCentre Safety and Warranty
Guide, go to:
http://www.lenovo.com/support
Chapter 2. Installing options and replacing hardware
35