NEC Express5800 Series Maintenance Manual page 50

Chapter 1 Maintenance
[?] Recovery method is required from the system while you change an expansion board on a server
encrypted by BitLocker.

In case you change an expansion board on a server encrypted by BitLocker, disable BitLocker before
changing the expansion board. If you do not make BitLocker disabled, System requires the recovery
method that was selected when BitLocker was configured. If you cannot enter one or more proper
recovery passwords, you will become unable to access all the encrypted data. Enable BitLocker after
the installment is finished.
[?] Network Controller or LOM Card does not operate.

Check the LED on Network Controller or that of LOM Card to confirm whether there is a status showing
the cause of trouble.

Check that there are no poor connections.

Check that a proper kind of cable suitable for the network speed or that a proper SFP or DAC cable is
used. In case you use 10GB network device of dual port, the type of media (DAC cable, equivalent
SPF+ module, etc.) should be same on both sides of SFP ports. Mixed use of different SFPs (SR/LR) on
one device is not supported.

Change the network cable to another cable which is proved to run properly to confirm the network cable
functions properly.

Check that the problem of software is not the cause of malfunction.

Check that the server and the operating system support the controller.

In System Utility, check that Controller is enabled.

Check that the server's ROM is the latest version.

Check that the controller's driver is the latest version.

Check that a valid IP address is given to the controller and the configuration is proper.
[?] Network controller or LOM card has become unable to operate.

Check the LED on Network controller or that of LOM Card to confirm whether there is a status showing
the cause of trouble.

Check that a proper network driver for the controller is installed and the driver file is not broken.
Re-install the driver.

Check that there are no poor connections.

Change the network cable to another cable which is proved to run properly to confirm the network cable
functions properly.

Check that the network controller or LOM card is not damaged.
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Express5800/R120h-1E, R120h-2E Maintenance Guide
5. Troubleshooting