Replacing The Heat Sink And Fan Assembly - Lenovo ThinkStation Hardware Maintenance Manual

board. Connect one end of the new signal cable to the optical drive and the other end to an available
SATA connector on the system board. See "Locating parts and connectors on the system board"
on page 71.
b. Locate an available five-wire power connector and connect it to the new optical drive.
Figure 26. Connecting a new optical drive
7. Reinstall the PCI card holder into the chassis if you have removed it. See "Removing and reinstalling the
PCI card holder" on page 76.
8. Reinstall the front bezel. See "Removing and reinstalling the front bezel" on page 75.
9. To complete the installation or replacement, go to "Completing the parts replacement" on page 109.

Replacing the heat sink and fan assembly

Attention
Do not open your computer or attempt any repair before reading and understanding the "Important safety
information" in the ThinkStation Safety and Warranty Guide that came with your computer. To obtain a copy
of the ThinkStation Safety and Warranty Guide, go to:
http://www.lenovo.com/support
CAUTION:
The heat sink and fan assembly might be very hot. Turn off the computer and wait three
to five minutes to let the computer cool before removing the computer cover.
This section provides instructions on how to replace the heat sink and fan assembly.
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 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 74.
3. Remove the PCI card holder. See "Removing and reinstalling the PCI card holder" on page 76.
4. Your computer supports two heat sink and fan assemblies. Locate the heat sink and fan assembly you
want to replace. See "Locating components" on page 70.
5. Depending on the heat sink and fan assembly you want to replace, do one of the following:
• If you are replacing heat sink and fan assembly 1, go to 6 on page 90.
• If you are replacing heat sink and fan assembly 2, do the following:
a. Remove the optical drive. See "Replacing the optical drive" on page 87.
.
Chapter 9 Replacing FRUs
89