Heat-Sink-And-Fan Assembly - Lenovo ThinkStation P520 User 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 134.

Heat-sink-and-fan assembly

Attention: Do not open your computer or attempt any repair before reading and understanding the "Read
this first: Important safety information" on page v.
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 63.
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 6.
4. Disconnect the heat-sink-and-fan-assembly cable from the microprocessor fan connector on the
system board.
5. Remove the four screws that secure the heat-sink-and-fan assembly to the system board in diagonal
sequence. For example,
a. Partially remove screw
b. Partially remove screw
Note: The illustration might be slightly different from your computer.
Figure 105. Removing the heat-sink-and-fan assembly
6. Carefully remove the heat-sink-and-fan assembly to avoid any possible damage to the system board.
Notes:
• The four screws cannot be removed from the heat-sink-and-fan assembly.
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P520 User Guide
1
, then fully remove screw
3
, then fully remove screw
2
, and then fully remove screw
4
, and then fully remove screw
1
.
3
.