NEC Express5800 320Fd-MR User Manual page 227

5.
Hold the black levers of the CPU/IO module and pull it out.
Pull it off until it is locked and stopped.
IMPORTANT:

Do not hold part other than the handle to pull the module.

Handle the CPU/IO module carefully. Do not drop the module or bump it against parts
in the device when you remove it.
6.
The CPU/IO module is locked on the way and cannot be pulled out. Lower the lock on the side of
CPU/IO module and unlock, and then pull it out.
7.
Pull out the CPU/IO module gently and carefully place it on a flat and sturdy table.
Avoid the dusty or humid place.
This allows you to access the devices inside of the CPU/IO module. For more information on
how to handle these devices, see the related sections.
Lock
System Upgrade 8-9