Cisco UCS C480 M5 Installation And Service Manual page 103

Maintaining the Server
Figure 48: Installing the Heatsink/CPU Assembly to the CPU Socket
1
2
3
c) Set the heatsink with CPU assembly down onto the CPU socket.
d) Use the T-30 Torx driver that is supplied with the replacement CPU to tighten the four captive nuts that secure the
heatsink to the motherboard standoffs.
Note
Step 9
Return the CPU module to the chassis:
a) With the two ejector levers open, align the CPU module with an empty bay.
b) Push the module into the bay until it engages with the midplane connectors and is flush with the chassis front.
c) Rotate both ejector levers toward the center until they lay flat and their latches lock into the front of the module.
Step 10
Reconnect power cords to all power supplies and then allow the server to boot to standby power mode (indicated when
the front panel Power button LED lights amber).
Guide hole in assembly (two)
CPU socket alignment post (two)
CPU socket leaf spring
Alternate tightening the heatsink nuts evenly so that the heatsink remains level while it is lowered. Tighten
the heatsink nuts in the order shown on the heatsink label: 1, 2, 3, 4. The captive nuts must be fully
tightened so that the leaf springs on the CPU socket lie flat.
4 Angled corner on heatsink (pin 1 alignment
feature)
5 Angled corner on socket (pin 1 alignment
feature)
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Cisco UCS C480 M5 Server Installation and Service Guide
Replacing a CPU and Heatsink
101