Cisco UCS C220 M4 Maintaining The Server page 35

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