Lenovo LXH-GJ769F4 User Manual page 12

9．Brightness
It indicates too bright or dim.
Adjust brightness.
If OSD has the same problem, it indicates the monitor cause it, or the problem come from
display adapter.
Check signal cable for bent or broken pins.
10．Geometric distortion
Geometric distortion refers to where the shape of the image is distorted in any way, such as
trapezoid, linearity, line straightness, tilt, pincushion, picture size and centering etc.
Check signal cable for bent or broken pins.
Adjust OSD to fix it.
Check the environment, and be far away from the electromagnetic devices.
Rotate monitor.
11．Moire ( Thin Curvy Lines )
Moire is a wavy effect produced by the convergence of lines. A moire pattern is natural optical
effect when converging lines in the picture are nearly parallel to the scanning lines.
Check signal cable for bent or broken pins.
Increase V_MOIRE value in the OSD.
Adjust picture size to fill the screen to viewing satisfaction.
Note: Some picture could cause moire, and it is difficult to avoid it .
12．Audible Noise
In general, monitor should not make sounds while on. They may make some sounds when
power cycling on or off(degauss cause it).
13．CRT Scratched
Scratched CRT are defined as having the scratch into glass faceplate and where cleaning the
CRT does not remove the scratch.
Power off the monitor you will found them easily.
Note: prevent belt, badges, buttons from scratching the CRT while lifting.
14．Important trouble
If you notice the monitor smoking, sparking, or current leakage, right now unplug the monitor
and take to repair.
41CD785-608-4B
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