Samsung 400UXN - Manual (Page 65)

Fine
Removes noise such as horizontal stripes. If the noise persists even after Fine tuning, repeat it after
adjusting the frequency (clock speed).
MENU → , → ENTER → , → ENTER → , → ENTER → , → ENTER
Position
Adjusts the screen location horizontally and vertically.
MENU → , → ENTER → , → ENTER → , → ENTER → , / , → ENTER
Adjusting the LCD Display