NEC Express5800 Series Maintenance Manual page 49

Chapter 1 Maintenance
[?] The monitor does not function properly when the power saver feature is used.

Check that the power saver feature is supported by the monitor. If it is not supported, make the feature
disabled.
[?] The colors of video are not displayed properly on the monitor.

Check that 15 pin VGA cable is firmly connected to the proper VGA port of the server and the monitor.

Check that the monitor and the console switch are compatible with the VGA output of the server.

Check that the VGA cable is not damaged. Use the cable which confirmed to be functioning.
[?] Slow moving horizontal lines are displayed on the monitor.

Check that electromagnetic interference has not occurred. Move the monitor away from other monitors
or transformers.
[?] The mouse and keyboard does not operate properly.

Check the followings to confirm there are not any poor connections.
・In case you use a console switching device, you should check that the server is properly connected to
the switch.
・In case you use a rack-type server, check the cable to the switch box. In addition, check that the switch
is properly configured for the server.
・In case you use a tower-type server, check the connection of cable connecting the input device and the
server.

In case you use a console switching device, check that all the cables and connectors have proper length
and are supported by the switches. Refer to the document of switch.

Check whether the latest driver for operating system is installed.

Change the device driver and confirm the device driver is not broken.

Restart the system and after the server is rebooted, check whether the input devices functions properly.

Change the device to an equivalent device (another mouse or keyboard of same type) whose action is
confirmed.
・In case any problems occur even with a new mouse or a keyboard, the connector board of system I/O
board is damaged. Replace the board.
・If you do not find any troubles, the previous input device is damaged. Change the device.

Check that the keyboard and mouse are connected to the proper ports. Check that the LED on the
keyboard blinks or NumLock LED lights during POST. In case you cannot observe that, change the
connection port.

Check that the keyboard and mouse are not dirty.
Express5800/R120h-1E, R120h-2E Maintenance Guide
5. Troubleshooting
49