NEC Express 5800/320Lc - Manual (Page 323)

8-22 System Upgrade
Installation
Follow the steps below to mount a CPU:
1. Shut down OS.
The server will be powered off automatically.
2. Unplug the power cord.
3. Remove the CPU module.
4. Detach the CPU air duct.
5. Check to be sure of the location of the CPU socket.
6. Remove the anti-dust sheet from the socket.
IMPORTANT: Carefully keep the removed sheet.
7. Lift the socket lever.
IMPORTANT: Open the lever fully. It can be opened 120° or more.