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Figure 54. Removing the microprocessor
9. Make sure that the small handle is in the raised position and the microprocessor retainer is fully open.
10. Remove the protective cover 2 that protects the gold contacts on the new microprocessor 1 .
11. Hold the new microprocessor and align the notches on it with the tabs in the microprocessor socket, or
align the small triangle on one corner with the corresponding beveled corner of the microprocessor
socket.
12. Lower the new microprocessor straight down into the microprocessor socket on the system board.
13. Close the microprocessor retainer and lock it into position with the small handle to secure the new
microprocessor in the socket.
14. Reinstall the heat sink and fan assembly. See “Replacing the heat sink and fan assembly” on page 117.
15. Reinstall the hard disk drive. See “Replacing the hard disk drive” on page 122.
16. Reconnect the heat sink and fan assembly cable to the microprocessor fan connector on the system
board.
17. Go to “Completing the FRU replacement” on page 131.
120 ThinkCentre Hardware Maintenance Manual