Lenovo ThinkCentre M77 2227 SFF User Manual page 63

6. Pivot the optical drive upward and disconnect the power supply assembly cables from all drives and
from power connectors
Figure 35. Power connectors on the system board
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.
7. 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 36. Removing the power supply assembly
1 and 2 on the system board.
downward to release the power supply assembly and then slide the power supply
.
Chapter 5 Installing or replacing hardware
51