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Troubleshooting
This section may help you isolate a problem and as a result, eliminate the
need to contact technical support, allowing continued productivity.
No picture
If the U indicator is not lit
m Check that the power cord is properly connected.
m Check that the U switch is in the “on” position.
If the “NO INPUT SIGNAL” message appears on the screen, or if the U
indicator is either orange or alternating between green and orange
m Try pressing any key on the computer keyboard.
m Check that your computer power switch is in the “on” position.
m Check that the video signal cable is properly connected and all plugs
are firmly seated in their sockets.
m Ensure that no pins are bent or pushed in the HD15 video input
connector.
If the “OUT OF SCAN RANGE” message appears on the screen
m Check that the video frequency is within that specified for the display.
Horizontal: 30 – 70 kHz
Vertical: 50 – 120 Hz
Refer to your computer’s instruction manual to adjust the video
frequency range.
m If you are using a video signal cable adapter, check that it is the correct
one.
If no message is displayed and the U indicator is green or flashing orange
m See “Self-diagnosis function” (Back cover).
No sound from speaker
If the ¤ indicator is displayed
m Press the ¤ button to cancel muting.
m Check that the audio plug is properly connected.
m Adjust the volume with . +/– buttons.
m Check that the headphones are not connected.
m Check the volume control, muting, sound selector, etc. of the sound
board. (See the computer’s manual.)
Microphone mixing is not possible
m Check that the MIC plug is properly connected.
m Check the microphone control, sound selector, etc. of the sound board.
(See the computer’s manual.)
Troubleshooting
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