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Troubleshooting 34
6. TROUBLESHOOTING
There appears no image on the picture tube, the green LED at
the front is out
Check if the power cord is properly connected to the power outlet
and to the display.
Check if the power button is switched on.
There appears no image, the green LED is on
The display is switched in Stand-by, manually or by the automatic
Power saving system.
Press the control knob at the rear shortly.
Try to switch on the display by pressing any key on the keyboard
of the computer that produces the video and sync. signals for the
display.
Check if both horizontal and vertical sync. signals are connected to
the display and to the computer.
On the picture tube appears the message "No Valid Sync
Signal"
Check if both horizontal and vertical sync. signals are connected to
the display and to the computer.
Check if the sync. signals are connected in the proper way (refer to
the chapter "Installation").
Check if both horizontal and vertical sync. frequencies match the
display specifications (refer to the chapter "Technical
specifications").
For other problems, please consult your technical service department.