Troubleshooting 22
TROUBLESHOOTING
There appears no image on the picture
tube, the green LED on 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 depressed.
• Check if contrast and brightness are not set
to 0.
There appears no image on the picture
tube, the green LED is on
The display is switched in Stand-by by the
automatic Power saving system.
• 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 to
the proper inputs (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.