Troubleshooting 205
Troubleshooting
1Immediately switch the server off, and disconnect the plug from the AC outlet.
2Does the installation site satisfy the environmental consider- ations (e.g. ambient temperature and humidity)?
See “Environmental considerations” on page 5.
3Are there any foreign objects blocking ventilation holes?
Nothing happens if you press the power switch. Or, nothing appears on screen even though you can hear the server running
Probable causes are that the peripheral devices or cables are not correctly connected, or fatal trouble has occurred on the server. Carry out the following procedure to check the cause of the trou- ble. If this does not remedy the problem, see “Remedy When Windows NT/2000 is Unusable” on page 213.
1Are the keyboard, mouse, and display unit properly connected to the server?
If the switch box is used on a Rack Type, also check the con- nections with other devices and that the server is properly selected.
See “How to connect peripheral devices” on page 26.
2Is the PCI expansion card properly inserted into the appropri- ate slot on the motherboard, and is it held firmly in place by the PCI bracket?
See “Installing/removing an optional device” on page 52. See “Expansion cards” on page 103.
3Are the power cables for the server and display unit properly connected to a grounded AC outlet?
See “Connecting the power cable” on page 31.
4Is the power indicator ( 
) lit amber?
5Switch on the display unit, and set the brightness and contrast to two thirds of the maximum value or more.