Lenovo ThinkCentre A58 User Manual - Page 152
Reinstall the heat sink and fan assembly. See Replacing the heat sink and fan
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Page 152 highlights
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 hard disk drive. See "Replacing the hard disk drive" on page 136. 15. Reinstall the heat sink and fan assembly. See "Replacing the heat sink and fan assembly" on page 142. 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 155. 146 Hardware Maintenance Manual