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Cisco UCS C220 M4 Server Installation and Service Guide
OL-32473-01
Chapter 3 Maintaining the Server
Installing or Replacing Server Components
Figure 3-17
CPU and Socket Alignment Features
Step 9
Install a heat sink:
Caution
The heat sink must have new thermal grease on the heat sink-to-CPU surface to ensure proper cooling.
If you are reusing a heat sink, you must remove the old thermal grease from the heatsink and the CPU
surface. If you are installing a new heat sink, skip to Step
a.
Apply the cleaning solution, which is included with the heatsink cleaning kit (UCSX-HSCK=,
shipped with spare CPUs), to the old thermal grease on the heatsink and CPU and let it soak for a
least 15 seconds.
b.
Wipe all of the old thermal grease off the old heat sink and CPU using the soft cloth that is included
with the heatsink cleaning kit. Be careful to not scratch the heat sink surface.
Note
New heatsinks come with a pre-applied pad of thermal grease. If you are reusing a heatsink, you
must apply thermal grease from a syringe (UCS-CPU-GREASE3=).
c.
Using the syringe of thermal grease provided with the CPU (UCS-CPU-GREASE3=), apply 2 cubic
centimeters of thermal grease to the top of the CPU. Use the pattern shown in
to ensure
even coverage.
Figure 3-18
Thermal Grease Application Pattern
1
SLS mechanism on socket
2
Tab on CPU frame (labeled ALIGN)
2
1
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