Lenovo ThinkCentre M83, Hardware Maintenance Manual

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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 51. 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 113.
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 installation or replacement, go to “Completing the parts replacement” on page 156.
Replacing the system board
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “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. 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.
2. Lay the computer on its side for easier access to the system board.
Chapter 8
.
Replacing FRUs (machine types: 10A0, 10A1, 10A6, 10A7, 10AG, 10AK, 10AL, and 10BE)
117