Lenovo ThinkCentre M80 Hardware Maintenance Manual for ThinkCentre M80 - Page 103

Replacing the system board, Remove the computer cover. See Removing the computer cover

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8. Pull on the tips of the rubber mounts until the rear fan assembly is in place. Figure 31. Replacing the rear fan assembly 9. Connect the rear fan assembly cable to the system fan connector on the system board. 10. Go to "Completing the parts replacement" on page 98. Replacing the system board 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 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 opening the computer cover. 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. Remove the computer cover. See "Removing the computer cover" on page 72. 3. Remove the front bezel. See "Removing and reinstalling the front bezel" on page 73. Chapter 8. Installing or replacing hardware: 4165, 7179, 7182, 7490, 7493, 7511, and 7521 95

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8. Pull on the tips of the rubber mounts until the rear fan assembly is in place.
Figure 31. Replacing the rear fan assembly
9. Connect the rear fan assembly cable to the system fan connector on the system board.
10. Go to “Completing the parts replacement” on page 98.
Replacing the system board
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:
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 opening the computer cover.
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. Remove the computer cover. See “Removing the computer cover” on page 72.
3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 73.
Chapter 8
.
Installing or replacing hardware: 4165, 7179, 7182, 7490, 7493, 7511, and 7521
95