Heat-Sink-And-Fan Assembly - Lenovo ThinkStation P720 Hardware Maintenance Manual

• 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 220.

Heat-sink-and-fan assembly

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 "Read this first: Important safety information" on page 1.
CAUTION:
Keep fingers and other parts of your body away from hazardous, moving parts. If you suffer an injury,
seek medical care immediately.
CAUTION:
Avoid contact with hot components inside the computer. During operation, some components
become hot enough to burn the skin. Before you open the computer cover, turn off the computer,
disconnect power, and wait approximately 10 minutes for the components to cool.
To remove or install the heat-sink-and-fan assembly, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 103.
2. Lay the computer on its side for easier access to the system board.
3. Locate the heat-sink-and-fan assembly. See "Computer components" on page 34.
Note: Depending on your computer model, your computer might come with one or two heat-sink-and-
fan assemblies. The illustrations in the following steps might be slightly different from your computer.
4. If necessary, remove the flex-bay bracket for easy access. See "Flex-bay bracket" on page 125.
5. To remove the heat-sink-and-fan assembly, do the following:
a. Disconnect the heat-sink-and-fan-assembly cable from the microprocessor fan connector on the
system board.
b. Use a T-30 Torx
to the system board in the following sequence:
1) Partially loosen screw
2) Fully loosen screw
®
screwdriver to loosen the four screws that secure the heat-sink-and-fan assembly
4 , fully loosen screw
2 , and then fully loosen screw
3 , and then fully loosen screw
1 .
.
Chapter 9 Hardware removal and installation
4 .
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