Lenovo ThinkStation P920, Hardware Maintenance Manual, Page: 208 / 246

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 210.
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:
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.
Notes:
• Depending on your computer model, your computer might be installed with one or two heat-sink-and-fan
assemblies.
• Do not touch the pins on the microprocessor socket or the gold contacts on the microprocessor.
Figure 177. Do not touch the pins or the gold contacts
To remove or install a 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. Remove the direct cooling air baffle. See “Direct cooling air baffle” on page 107.
3. Lay the computer on its side for easier access to the heat-sink-and-fan assembly.
4. To remove a heat-sink-and-fan assembly from the system board, do the following:
a. Locate the failing heat-sink-and-fan assembly. See “Computer components” on page 33.
b. Disconnect the heat-sink-and-fan-assembly cable from the system board.
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P920 Hardware Maintenance Manual