Samsung 1100DF - Manual (Page 21)

On-Screen Display
Adjust Brightness and Contrast.
1 Push the
( ) or
( ) button. The brightness/contrast display
will appear.
2 Push the button to increase the brightness or the button to decrease
the brightness.
3 Push the button to increase the contrast or the button to decrease the
contrast.
1 Push and hold in the Menu ( ) button for 10 seconds or more to Lock
the OSD.
(In this case, even if you click the Menu button(
), the control screen
will not be printed.)
2 Push and hold in the Menu ( ) button for 10 seconds or more to
UnLock the OSD.
Menu How to adjust
Brightness/Contrast
OSD lock/unlock