IBM ThinkCentre 8105 Hardware Replacement Manual page 15

5. Disconnect power supply cables 1 and 2 from the system board.
6. Disconnect the power supply cables from all the drives.
7. Remove the power supply assembly from the computer.
8. 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 that are provided.
9. Install and tighten the three screws at the rear of the chassis to secure the
power supply assembly.
10. Reconnect all the power supply cables to the drives and the system board.
11. Reinstall the PCI riser.
12. Go to "Completing the parts replacement" on page 26.
Chapter 2. Replacing hardware
7