Lenovo ThinkCentre E73 Hardware Maintenance Manual page 153

Note: You might also need to release the power supply assembly cables from some cable clips or ties
that secure the cables to the chassis. Make sure that you note the cable routing before disconnecting
the cables.
6. At the rear of the computer, remove the three screws that secure the power supply assembly. Press the
power supply clip 1
assembly to the front of the computer. Lift the power supply assembly out of the computer.
Figure 93. Removing the power supply assembly
7. Ensure that the new power supply assembly is the correct replacement.
downward to release the power supply assembly and then slide the power supply
.
Chapter 10 Replacing FRUs (machine types: 10AU, 10AW, 10BF, and 10BG)
149