Lenovo ThinkCentre M90p Maintenance Manual page 83

Figure 13. Removing the retaining screws for the power supply assembly
4. Open the computer cover. See "Opening the computer cover" on page 68.
5. Pivot the optical drive bay assembly upward to gain access to the power supply assembly.
6. Disconnect the power supply assembly cables from all drives and from the power connectors
on the system board.
Note: You might need to remove the hard disk drive to gain easy access to the power connector
See "Replacing the hard disk drive" on page 84.
Figure 14. Power connectors on the system board
7. Release the power supply assembly cables from the cable clips and ties in the chassis.
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Chapter 8 Replacing FRUs (Machine type: 7536)
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