NEC Express5800 Series User Manual page 286

8-10 System Upgrade
CPU/IO MODULE
To replace a CPU (processor, DIMM (memory), PCI card, you need to remove the CPU/IO module.
IMPORTANT:
Ask NEC Corporation of America's Technical Support or your authorized Sales agent to replace

the CPU/IO module and components of the CPU/IO module.
Make sure to read "ANTI-STATICMEASURES" and

UPGRADE" before installing or removing options.
To install or remove CPU or DIMM, first power off the server before removing the CPU/IO

module.
Removing a module while operating may cause unexpected problems. Use the management

software (e.g., ftServer Utility or NEC ESMPRO Manager) to identify the module to be removed
and bring down the failing module.
Then remove the failed module after verifying the Status LED on the CPU/IO module. See
Chapter 2 "LED's" for details of the Status LED.
Precautions
When replacing both CPU/IO modules, replace one module and wait until dual configuration is
established to replace the other module. If you replace the both modules simultaneously,
establishing dual CPU/IO module configuration can result in interruption of the whole system.
"PREPARING YOUR SYSTEM FOR