Chapter 8. Replacing FRUs - CNET Content Solutions

98 Hardware Maintenance Manual
cover and place it on the microprocessor socket of the failing system
board when you complete this procedure.
18. Holding the microprocessor with your fingers, position the microprocessor so
that the notches on the microprocessor are aligned with the tabs in the
microprocessor socket on the new system board.
Important
To avoid damaging the microprocessor contacts, do not tilt the
microprocessor when installing it into the socket.
19. Lower the microprocessor straight down into the system board socket of the
new system board.
20. To secure the microprocessor in the socket, close the microprocessor retainer
and lock it into position with the small handle.
21. Install the new retention module (if required) on the new system board.
22. Install the heat sink and fan assembly on the new system board.
23. 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.
24. 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.
25. Reconnect all cables that were disconnected from the system board.
26. Reinstall the hard disk drive. See “Replacing the hard disk drive” on page
103.
27. 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.
28. Reinstall the front bezel.
29. Reinstall any PCI adapter cards that were removed.
30. Position the fan duct on the heat sink fan.
31. Go to “Completing the FRU replacement” on page 111.