Lenovo ThinkCentre M800 User Manual page 89

Figure 57. Pivoting the drive bay assembly upward
7. Remove the heat sink fan duct. See "Replacing the heat sink and fan assembly" on page 74.
8. Disconnect the power supply assembly cables from the system board and all drives. See "Parts on
the system board" on page 6.
9. Release the power supply assembly cables from the cable clips and ties in the chassis.
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 58. 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.
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Chapter 7 Installing or replacing hardware
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