Lenovo ThinkCentre M800 Hardware Maintenance Manual page 154

10. Remove the three screws that secure the power supply assembly. Then, press the retaining clip
downward and slide the power supply assembly in the direction as shown to remove the power supply
assembly.
Figure 108. Removing the power supply assembly
11. Install the new power supply assembly into the chassis so that the screw holes in the new power
supply assembly align with those in the chassis. Then, install the three screws to secure the power
supply assembly to the chassis.
Figure 109. Installing the power supply assembly
12. Reconnect the power supply assembly cables to the system board and each of the drives. See "Parts
on the system board" on page 35.
13. Secure the power supply assembly cables with the cable clips and ties in the chassis.
14. Reinstall the heat sink fan duct. See "Replacing the heat sink and fan assembly" on page 137.
15. Press the release tab
downward until it snaps into position.
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ThinkCentre M800 and M900 Hardware Maintenance Manual
1 on the right side of the drive bay assembly and pivot the drive bay assembly
1