Lenovo 10AS, User Manual, Page: 66 / 148

10. Lower the new microprocessor straight down into the microprocessor socket on the system board.
Figure 30. Installing the microprocessor
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 and fan assembly. See “Replacing the heat sink and fan assembly” on page 50.
13. Reconnect all cables that were disconnected from the system board.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the replacement, go to “Completing the parts replacement” on page 66.
Replacing the front audio and USB assembly
Attention: Do not open your computer or attempt any repair before reading and understanding the
“Important safety information” on page v.
This section provides instructions on how to replace the front audio and USB assembly.
To replace the front audio and USB assembly, do the following:
1. Turn off the computer and disconnect all power cords from electrical outlets.
2. Remove the computer cover. See “Removing the computer cover” on page 35.
3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 36.
4. Locate the front audio and USB assembly.
5. Disconnect the front audio and USB assembly cables from the system board. See “Locating parts on
the system board” on page 13.
Note: Make sure that you note the locations of the cables when you disconnect the cables from the
system board.
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ThinkCentre E73 User Guide