Specifications

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3-21
Cisco UCS C460 Server Installation and Service Guide
OL-22326-01z
Chapter 3 Maintaining the Server
Installing or Replacing Server Components
Step 2 Install a new CPU:
a. Insert the replacement CPU in the socket with the arrow on the CPU pointing toward the arrow on
the socket.
b. Close the CPU retaining lid and clip down the CPU retaining lever.
Step 3 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 replacing a heatsink that was previously installed, you must remove the old thermal
pad. If you are installing a new heatsink, skip to step d. below.
a. Apply the supplied 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 heatsink using a soft cloth that will not scratch the heatsink
surface.
Caution Damage to the heatsink surface can damage the heat transferring properties of the heatsink.
c. Apply the supplied preparation solution to the center bottom of the heatsink, where the new thermal
pad will be applied.
d. Apply the new thermal pad to the center bottom of the heatsink.
e. Align the heatsink captive screws with the motherboard standoffs, then tighten the captive screws
evenly, until the screws stop against the captive springs.
Note Alternate tightening each screw evenly to avoid damaging the heatsink or CPU.
f. Replace the CPU cage. Align the six captive screws with the holes in the motherboard, then tighten
each screw evenly.
g. Replace the memory riser dividers. Slide each one into the slots on the CPU cage and the chassis.
h. Replace all memory risers. See Replacing Memory Risers, page 3-23.
i. Replace the top cover.
j. Replace the server in the rack, replace cables, and then power on the server by pressing the Power
button.