User’s Guide

Tro ub l esh ooting  │  61
Built-in diagnostics
Your monitor has a built-in diagnostic tool that helps you determine if the screen
abnormality you are experiencing is an inherent problem with your monitor, or with
your computer and video card.
To run the built-in diagnostics:
1. Ensur
e that the screen is clean (no dust particles on the surface of the
screen).
2. Pr
ess and hold Button 4 for about 4 seconds until a pop menu appears.
3. Use
Button 1 or Button 2 to select the diagnostic tool and use Button 3
to confirm. A gray test pattern appears at the beginning of the diagnostic
pr
ogram.
4. Car
efully inspect the screen for abnormalities.
5. Pr
ess Button 1 again to change the test patterns.
6. R
epeat steps 4 and 5 to inspect the display in red, green, blue, black, white,
and text screens.
7. Pr
ess Button 1 to end the diagnostic program.