Lenovo ThinkCentre 9120 Hardware Maintenance Manual page 133

triangle on the microprocessor socket.
10. Lower the microprocessor straight down into the system board socket of the
new system board.
11. To secure the microprocessor in the socket, close the microprocessor retainer
and lock it into position with the small handle.
12. Install the heat sink and fan assembly on the system board.
13. Connect the heat sink and fan assembly cable to the system board. See
"Locating parts on the system board" on page 115.
14. Position the fan duct on the heat sink fan.
15. Go to "Completing the FRU replacement" on page 135.
Chapter 9. Replacing FRUs - Desktop computers
127