Iiyama ProLite XB2780HSU User Manual page 25

G Adjust the Phase to correct horizontal wavy noise, fl icker or blur in the zebra pattern.
 In case the strong fl icker or blurs remain on a part of the screen, repeat steps F and
NOTE
G because the Clock may not be adjusted correctly. If the fl icker or blurs still remain,
set the refresh rate of computer to low (60Hz) and repeat steps from C again.
 Adjust the H.Position after the Phase adjustment if the horizontal position moves during
the adjustment.
H Adjust the Brightness and Color to get the desired picture after you complete the Clock and
Phase adjustments.
Put back your favorite wallpaper.
20 OPERATING THE MONITOR