Sharp IQ-8900 - Manual (Page 7)

You may find it necessary to adjust the LCD contrast to suit certain
lighting conditions.
Press (MENU) and then
touch to open the
TOOLS menu.
q
2 Touch
ä
1
on the menu, then touch
ADJUST LCD CONTRAST]
on
the submenu.
3 Touch the buttons to
adjust the contrast to your
liking.
Note: If dark, horizontal
lines appear on the
display, then you have set
the contrast too dark.
Simply lighten it until the
lines disappear.
ADJUST LCD CONTRAST
To adjust the LCD contrast,
Press or
Note: You can get here directly
when the unit is off by holding down
the [MENU] key and then
pressing the [ON] key.
Touch when you are finished.
See “Getting the Unit Up and Running,” Chapter for more details,