User Guide231www.nec-computers.comSystem DiagnosticsThe System Diagnostics runs several tests on the server.Use the System Diagnostics program in the NEC ExpressBuilder CD-ROM providedwith the server to diagnose the server.Test ItemsThe following items are tested in system diagnostics.■ Memory■ CPU cache memory■ Hard disk used as a systemCautionWhen executing the System Diagnostics, make sure to discon-nect the LAN cable.Executing the System Diagnostics with the LAN cableconnected, the network may be influenced.Note: On checking the hard disk, no data is written into thedisk.Starting and Ending the System DiagnosticsThere are two ways to diagnose the server: to use the local console (keyboard) of theserver itself, and to use the management PC via serial port (remote console).CautionTwo methods of LAN via the serial port are mentioned in Appendix E"NEC ExpressBuilder" in the way of communicating in remote con-sole.Use the serial port to execute System Diagnostics with remoteconsole. The LAN connection is not for System Diagnostics.Procedures to start the diagnostics program is as follows:1. Shutdown the OS, and turn off the server. Then, unplug the power cord.
