NEC Express5800 320Fd-MR User Manual page 240

8-22 System Upgrade
7.
Detach the socket cover on the CPU socket.
8.
Lift the socket lever.
IMPORTANT:
Keep the socket cover.
9.
Lift the CPU socket holder.
IMPORTANT:
Open the lever fully. It can be opened 120° or more
10.
Place the CPU on the socket carefully.
11.
After pressing the CPU softly against the socket, place the CPI
socket holder back to its original place.
TIPS:
Pay attention to the orientation of the CPU. The CPU and
socket have pin marks to prevent misinsertion. Check the
pin marks of the CPU and the socket and insert the CPU
correctly.
12.
Press the CPU softly to the socket and return the CPU socket
holder.
.