Silicon Graphics Virtu VN200, Hardware User'S Manual

Page: 99 / 108

Hardware Replacement Procedures
007-5483-001 83
Remove the Heatsink
SGI does not recommend that the CPU or the heatsink be removed from the node board.
However, if you do need to remove the heatsink, use the instructions below to prevent
damage to the CPU or the CPU socket.
1. Unscrew and remove the heatsink screws from the node board in the sequence as
shown in
Figure 3-17 .
Caution: Do not use excessive force when loosening the heatsink. Using
excessive force can damage the heatsink, CPU, or node board.
2. Grasp the heatsink and gently loosen it from the CPU.
3. When the heatsink is loose, remove it from the CPU.
4. Clean the surface of the CPU and the heatsink to remove the old thermal grease.
5. Refer to section “Replace the Thermal Interface Material” on page 83 .
6. Apply a small amount of thermal interface material (TIM) on the surface of the CPU
before you install the heatsink.
Replace the Thermal Interface Material
The Intel Xeon processors used in your server require a thermal interface material (TIM)
between the processors and heatsinks to properly dissipate the heat that is generated by
the processors. If you replace a processor and/or heatsink, you will need to remove the
existing TIM from the processor and heatsink. Then, you will need to apply new TIM to
the processor before you install the heatsink.
The TIM application instructions accompany the new TIM. The following subsections
describe how to remove the existing TIM:
• “Removing TIM from a Processor” on page 84
• “Removing TIM from a Heatsink” on page 87
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