Lenovo ThinkCentre Edge 91 Hardware Maintenance Manual page 132

5. Disconnect the power supply assembly cables from all drives and from the 24-pin power connector and
4-pin power connector on the system board. See "Locating parts on the system board" on page 109.
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
1
power supply clip
assembly to the front of the computer. Lift the power supply assembly out of the computer.
Figure 62. Removing the power supply assembly
7. Make sure that the new power supply assembly is the correct replacement.
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ThinkCentre Hardware Maintenance Manual
downward to release the power supply assembly and then slide the power supply