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General Troubleshooting Guide
NO DISPLAY,
but LED is ON
or LED is amber(yellow)
NO
Make sure of the state of the computer
(Turn on).
Press the keyboard or operate the mouse.
END
Is picture displayed
normally?
It is need to check and
repair the monitor.
Amber
Green
NO
Is the ATTENTION
picture displayed?
CHECK SIGNALCABLE
NO SIGNALINPUT
LED
Amber? or Green?
Power off the monitor and then on.
Restart PC.
END
Is picture displayed
normally?
YES
It is need to check and
repair the monitor.
NO
YES
Make sure the correct signal is input.
Check contrast level
is not minimized.
(Press Contrast button,
increase value to 100.)
END
Is picture displayed
normally?
YES
OK
NO
1. Make sure the correct signal is input.
2. Press the keyboard or operate the mouse.
3. Make sure of the range of the
input frequency and then set the computer.
END
Is picture displayed
normally?
YES
It is need to check and
repair the monitor.
NO
YES
YES
YES
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