Lenovo ThinkCentre A51p - Removing and replacing the power supply

Removing and replacing the power supply
Attention
Do not open your computer or attempt any repair before reading the
“Important safety information” in the Quick Reference that was included with
your computer. If you no longer have this copy of the Quick Reference, you
can obtain one online from the IBM Web site at
http://www.ibm.com/pc/support.
To remove and replace the power supply, you will need a flat-blade screwdriver.
1. Remove the cover. See “Removing the cover” on page 1.
2. Press the release lever and rotate the hard disk drive outward using the blue
handle 1 to allow access to the power supply cable connections.
Note: As you disconnect power supply cables, note the location of each
connector.
3. Disconnect the power supply cable connected to each of the drives.
4. Disconnect the power supply cables connected to the system board.
5. Remove the screws at the rear of the chassis that secure the power supply.
4 Hardware Removal and Replacement Guide