Lenovo ThinkCentre M57 6086 Hardware Maintenance Manual page 105

21. Reconnect the heat sink and fan assembly cable to the system board. See the
system board illustration for your machine type at "System board connectors"
on page 88.
22. Install the new system board into the chassis and align the screw holes with
those in the chassis. Insert and tighten the screws that secure the system
board.
23. Reconnect all cables that were disconnected from the system board.
24. Reinstall the hard disk drive. See "Replacing the hard disk drive" on page
104.
25. Align the drive bay assembly with the two slots and rails on the sides of the
chassis, reconnect the drive cables on the system board, and then slide the
drive bay assembly towards the rear of the chassis until it snaps into position.
26. Reinstall the front bezel.
27. Reinstall any PCI adapter cards that were removed.
28. Position the fan duct on the heat sink fan.
29. Go to "Completing the FRU replacement" on page 112.
Chapter 8. Replacing FRUs
99