Cisco Systems UCS C420 manual Icon. See -14 on

Chapter 3 Maintaining the Server

Installing or Replacing Server Components

Figure 3-17 CPU and Pick-and-Place Tool on Pedestal

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Arrow marks for alignment

Step 8 Install a new CPU:

a.Set the Pick-and-Place tool that is holding the CPU over the empty CPU socket on the motherboard.

Note Align the arrow on the top of the tool with the registration mark (small triangle) that is stamped on the metal of the CPU socket, as shown in Figure 3-16 on page 3-30.

b.Press the top button on the tool to set the CPU into the socket. Remove the empty tool.

c.Close the hinged CPU cover plate.

d. Clip down the CPU retaining latch with the		icon, then clip down the CPU retaining latch
with the	icon. See Figure 3-14 on page 3-29.

Step 9 Install a heatsink:

Caution The heatsink must have a new, undamaged thermal pad on the heatsink-to-CPU surface to ensure proper cooling. If you are reusing a heatsink, you must remove the old thermal pad. If you are installing a new heatsink, skip to Step d. below.

a.Apply an alcohol-based cleaning solution to the old thermal pad and let it soak for a least 15 seconds.

b.Wipe all of the old thermal pad off the old heatsink using a soft cloth that will not scratch the heatsink surface.

c.Apply thermal grease from an included syringe to the top of the CPU.

	Cisco UCS C420 Server Installation and Service Guide
OL-27640-01		3-31