Replacing The Heat Sink And Fan Assembly - Lenovo ThinkCentre M800 User Manual

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 74.

Replacing the heat sink and fan assembly

Attention: Do not open your computer or attempt any repair before reading and understanding the "Read
this first: Important safety information" on page iii.
CAUTION:
The heat sink and fan assembly 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 heat sink and fan assembly, do the following:
1. Remove any media from the drives and turn off all connected 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 52.
3. Lay the computer on its side for easier access to the system board.
4. Locate the heat sink and fan assembly. See "Computer components" on page 4.
5. Disconnect the heat sink and fan assembly cable from the microprocessor fan connector on the system
board. See "Parts on the system board" on page 5.
.
Chapter 7 Installing or replacing hardware
65