Cisco SE-CL-L3 Installation Manual page 56

Moving an M5 Generation CPU
Figure 28: Installing the Heatsink/CPU Assembly to the CPU Socket
1 Guide hole in assembly (two)
2 CPU socket alignment post (two)
3 CPU socket leaf spring
b) On the new board, set the heatsink with CPU assembly down onto the CPU socket.
c) Use a T-30 Torx driver to tighten the four captive nuts that secure the heatsink to the board standoffs.
Note 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.
Cisco Application Services Engine Hardware Installation Guide
50
4 Angled corner on heatsink (pin 1 alignment
feature)
5 Angled corner on socket (pin 1 alignment
feature)
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Maintaining the Server