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8. Remove the protective cover 2 that protects the gold contacts on the new
microprocessor 1.
9. 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.
10. Lower the new microprocessor straight down into the microprocessor socket
on the system board.
11. Close the microprocessor retainer and lock it into position with the small
handle to secure the new microprocessor in the socket.
12. Reinstall the heat sink. See “Replacing the heat sink” on page 19.
13. Reinstall any other parts or reconnect any other cables you removed.
14. Go to “Completing the parts replacement” on page 30.
Replacing the adapter card
Attention
Do not open your computer or attempt any repair before reading and understanding the
“Important safety information” in the ThinkCentre Safety and Warranty Guide that came with
your computer. To obtain a copy of the ThinkCentre Safety and Warranty Guide, go to:
http://www.lenovo.com/support
This section provides instructions on how to replace the adapter card.
To replace the adapter card:
1. Open the computer cover. See “Opening the computer cover” on page 12.
2. Locate the system board and disconnect all cables connected to the system
board. See “Locating parts on the system board” on page 10.
Chapter 2. Installing options and replacing hardware 23