Cisco UCS C240 M4 Installation And Service Manual page 66

Installing or Replacing Server Components
Figure 3-15
1 SLS mechanism on socket
Step 9 Install a heat sink:
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. If you are installing a new heat
sink, skip to Step c.
Apply the cleaning solution, which is included with the heatsink cleaning kit (shipped with spare
a.
CPUs), to the old thermal grease and let it soak for a least 15 seconds.
b. Wipe all of the old thermal grease off the old heat sink using the soft cloth that is included with the
heatsink cleaning kit. Be careful to not scratch the heat sink surface.
c. Apply thermal grease from the syringe that is included with the new CPU to the top of the CPU.
Apply about half the syringe contents to the top of the CPU in the pattern that is shown in
Figure
Note
Cisco UCS C240 M4 Server Installation and Service Guide
3-26
CPU and Socket Alignment Features
3-16.
If you do not have a syringe of thermal grease, you can order a spare
(Cisco PID UCS-CPU-GREASE3=).
Chapter 3
2
1
2 Tab on CPU frame (labeled ALIGN)
Maintaining the Server
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