Cisco UCS C3160, Installation And Service Manual

Page: 73 / 106

3-33
Cisco UCS C3160 Rack Server Installation and Service Guide
OL-32062-01
Chapter 3 Maintaining the System
Installing or Replacing System Components
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, page 3-33
•
CPU Replacement Procedure, page 3-33
• Additional CPU-Related Parts To Order With RMA Replacement Server Nodes, page 3-38
CPU Configuration Rules
See Figure 3-19 for the CPU socket numbering.
• The server node must have two CPUs to operate.
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.
Caution The Pick-and-Place tools used in this procedure are required to prevent damage to the contact pins
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:
Step 1 Shut down and remove power from the entire system, as described in Shutting Down and Powering Off
the System, page 3-9 .
Step 2
Remove a server node from the system:
a. Grasp the two ejector levers and pinch their latches to release the levers (see Figure 3-15 ).
b.
Rotate both levers to the outside at the same time to evenly disengage the server node from its
midplane connectors.
c. Pull the server node straight out from the system.
Step 3
Remove the server node cover as described in Removing the Server Node Cover, page 3-12 .
Step 4 Use a Number 2 Phillips-head screwdriver to loosen the four captive screws that secure the heatsink, and
then lift it off of the CPU.
Note Loosen each screw evenly to avoid damaging the heatsink or CPU.
Step 5 Unclip the first CPU retaining latch that is labeled with the icon, and then unclip the second
retaining latch that is labeled with the icon. See Figure 3-20 .