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Chapter 3
Maintaining the System
Replacing CPUs and Heatsinks Inside the Server Node
The CPUs are inside the server node. Although CPUs are not spared separately for this server, you might
need to move your CPUs from a faulty server node module to a new server node module.
This section contains the following topics:
•
•
•
CPU Configuration Rules
See
•
CPU Replacement Procedure
Caution
CPUs and their motherboard sockets are fragile and must be handled with care to avoid damaging pins
during installation. The CPUs must be installed with heatsinks and their thermal pads to ensure proper
cooling. Failure to install a CPU correctly might result in damage to the system.
The Pick-and-Place tools used in this procedure are required to prevent damage to the contact pins
Caution
between the motherboard and the CPU. Do not attempt this procedure without the required tools, which
are included with each CPU option kit. If you do not have the tool, you can order a spare (Cisco PID
UCS-CPU-EP-PNP).
To install or replace a CPU heatsink and CPU, follow these steps:
Shut down and remove power from the entire system, as described in
Step 1
the System, page
Step 2
Remove a server node from the system:
a.
b.
c.
Remove the server node cover as described in
Step 3
Use a Number 2 Phillips-head screwdriver to loosen the four captive screws that secure the heatsink, and
Step 4
then lift it off of the CPU.
Note
Unclip the first CPU retaining latch that is labeled with the
Step 5
retaining latch that is labeled with the
OL-32062-01
CPU Configuration Rules, page 3-33
CPU Replacement Procedure, page 3-33
Additional CPU-Related Parts To Order With RMA Replacement Server Nodes, page 3-38
Figure 3-19
for the CPU socket numbering.
The server node must have two CPUs to operate.
3-9.
Grasp the two ejector levers and pinch their latches to release the levers (see
Rotate both levers to the outside at the same time to evenly disengage the server node from its
midplane connectors.
Pull the server node straight out from the system.
Loosen each screw evenly to avoid damaging the heatsink or CPU.
Installing or Replacing System Components
Removing the Server Node Cover, page
icon, and then unclip the second
icon. See
Figure
3-20.
Cisco UCS C3160 Rack Server Installation and Service Guide
Shutting Down and Powering Off
Figure
3-15).
3-12.
3-33
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