Lenovo ThinkServer User Manual page 167

CAUTION:
Hazardous moving parts. Keep fingers and other body parts away.
CAUTION:
The heat sink and fan assembly might be very hot. Turn off the server and wait three to five minutes to
let the server cool before removing the server cover.
Before you begin, print all the related instructions or ensure that you can view the PDF version on another
computer for reference.
To replace the heat sink and fan assembly, do the following:
1. Remove all media from the drives and turn off all attached devices and the server. Then, disconnect all
power cords from electrical outlets and disconnect all cables that are connected to the server.
2. Remove the server cover. See "Removing the server cover" on page 85.
3. Locate the heat sink and fan assembly. See "Server components" on page 25.
4. Lay the server on its side for easier operation. If necessary, remove any installed PCI card that might
impede your access to the heat sink and fan assembly. See "Removing a PCI card" on page 95.
5. Disconnect the heat sink and fan assembly cable from the microprocessor fan connector on the system
board. See "System board components" on page 42.
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Chapter 6 Installing, removing, or replacing hardware
155