Microtek CX4 - Manual (Page 48)

The words ‘No Signal’ appear on the screen:
Check to ensure whether the video signal source is connected to
the projector.
Check whether this video signal source is outputting a signal.
If the projector does not receive any video input signal in 30
minutes, the projector will automatically turn the power off.
The following are solutions when a partial image or the entire
image is blurred or does not focus correctly:
Try to adjust the focus.
Check to ensure that the distance between the projector and the
screen is within a proper range of distance.
To obtain the best effect, adjust the projector so as to parallel the
lens at right angles to the screen. Additionally, the screen itself
should have a level surface.
Try adjusting the Brightness and the Contrast settings available
on the Computer menu and the Video menu, or you may also
adjust the Synchronization and the Tracking settings by adding
Check the lens for dirt or dust. Use the procedure depicted on
page 40 for details on cleaning the lens.
Abnormal Image Coloring
Abnormal image coloring occurs when the color balance is not set up
properly. You may adjust the color according to the following steps:
If a computer image is being displayed, you may adjust the RGB
settings on the COMPUTER menu.
If a video image is being displayed, you may adjust the color
intensity and tint settings on the VIDEO menu.
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