NEC N8800-162F User Manual page 249

3.
Disconnect the power cable of a removing module.
The stopper will return to the vertical position when you
disconnect the cable.
CHECK:
Check whether the stopper drops down after disconnecting the
power cable. If you disconnect the cable and the stopper does not
go back to this position, you cannot pull out the CPU/IO module
in the next step.
4.
Loosen the screws securing the CPU/IO module handle to press down the handle.
IMPORTANT:
Before you pull out a CPU/IO module, check the rear of the server to make sure cables
for connection with peripheral equipment or network are disconnected. If any cables are
connected, keep a record of where the cables are connected and disconnect all cables
connected to the module you are to pull out.
TIPS:
If you cannot disconnect the LAN cable easily, disconnect while pressing the latch with
a slotted screwdriver.
System Upgrade 8-13
Stopper