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A monitor recreates visual signals received from the computer. Therefore, if there is trouble
with the computer or the video card, this can cause the monitor to become blank, have poor
coloring, noise, Sync. Out of Range, 68.7kHz 168Hz PP, etc. In this case, first check the
source of the problem, and then contact a service center or your dealer.
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Judging the monitor's working condition
If there is no image on the screen or a "Sync. Out of Range, 68.7kHz 168Hz PP" message
comes up, disconnect the cable from the computer while the monitor is still powered on.
{ If there is a message coming up on the screen or if the screen goes white, this means
the monitor is in working condition.
{
In this case, check the computer for trouble.