Iiyama ProLite T1731SAW-B5 User Manual page 21

Adjust the FINE 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
NOTE
because the H-SIZE may not be adjusted correctly.
 Adjust the H-POSITION after the FINE adjustment if the horizontal position moves
during the adjustment.
Adjust the Brightness and Color to get the desired picture after you complete the H-SIZE
and FINE adjustments.
Put back your favorite wallpaper.
and
OPERATING THE MONITOR 17