Replacing The Power Supply - Lenovo ThinkCentre A55 8705 Hardware Replacement Manual

Replacing the power supply

To replace the power supply:
1. Remove the computer cover. See "Removing the computer cover" on page 7.
2. Disconnect the power supply cables from the system board and from all drives.
3. Remove the four screws that secure the power supply at the rear of the chassis.
4. Lift the power supply out of the chassis.
5. Install the new power supply into the chassis so that the screw holes in the
6. Install the four screws to secure the power supply.
7. Reconnect the power supply connectors to the system board.
8. Reconnect a power supply connector to each of the drives.
9. Go to "Completing the installation" on page 26.
10
Hardware Replacement Guide
Attention:
Do not remove the computer cover or attempt any repair before reading the "Important
safety information" in the Safety and Warranty Guide that was included with your computer.
To obtain copies of the Safety and Warranty Guide, go to the Support Web site at
http://www.lenovo.com/support.
Note: For this procedure, it helps to lay the computer on its side.
See "Identifying parts on the system board" on page 4.
power supply align with those in the chassis.
Note: Use only the screws provided by Lenovo.