Lenovo 70AL, Maintenance Manual, Page: 147 / 190

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.
Note: Depending on the model, your server might look slightly different from the illustrations in this topic.
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 67.
3. Locate the heat sink and fan assembly. See “Server components” on page 22.
4. Lay the server on its side for easier operation. If necessary, remove any installed PCI Express card that
might impede your access to the heat sink and fan assembly. See “Removing the Ethernet card”
on page 81.
5. Disconnect the cable of the heat sink and fan assembly from the microprocessor fan connector on the
system board. See “System board components” on page 38.
Chapter 6
.
Installing, removing, or replacing hardware
135