Lenovo ThinkCentre M73 10B0, Hardware Maintenance Manual

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8. 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 points to the beveled
corner
4 of the microprocessor socket.
Figure 205. Installing the microprocessor
9. Close the microprocessor retainer and lock it into position with the small handle to secure the new
microprocessor in the socket.
10. Reinstall the thermal module. See “Replacing the thermal module” on page 227.
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 235.
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 thermal module and microprocessor might be very hot. Before you open the computer cover, turn
off the computer and wait several minutes until the computer is cool.
To replace the system board, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
Chapter 11
.
Replacing FRUs (machine types: 10AX, 10AY, 10DK, 10DL, 10DM, and 10DN)
231