Lenovo 10AX, Maintenance Manual

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11. Note the orientation of the new microprocessor. Hold the new microprocessor by its edges and align
the notches 1 on it with the tabs 2 in the microprocessor socket. Then, carefully lower the new
microprocessor straight down into the microprocessor socket.
Note: The small triangle 3 on one corner of the new microprocessor is the microprocessor orientation
indicator. The new microprocessor is in the correct orientation when this indicator faces the beveled
corner
4 of the microprocessor socket.
Figure 111. Installing the microprocessor
12. Close the microprocessor retainer and lock it into position with the small handle to secure the new
microprocessor in the socket.
13. Reinstall the heat sink and fan assembly. See “Replacing the heat sink and fan assembly” on page 158.
14. Reconnect all cables that were disconnected from the system board. See “Locating parts on the
system board” on page 80
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 186.
Replacing the system board
Attention:
Do not open your computer or attempt any repair before reading and understanding the “Important safety information”
on page 1.
This section provides instructions on how to replace the system board.
CAUTION:
The heat sink and microprocessor might be very hot. Turn off the computer and wait three to five
minutes to let the computer cool before removing the computer cover.
Chapter 10
.
Replacing FRUs (machine types: 10B4, 10B5, 10B6, and 10B7)
167