Selecting the AV Sources for Main and Sub Screen
MAIN SCREEN
Press the 
(DOWN Button) to select the desired AV source. The sources will be changed in following sequence:
SUB SCREEN
Press the 
(UP button) to select the desired AV source. The sources will be changed in following sequence:
NOTE: Same video input cannot be viewed simultaneously.
Dimmer Button:
Press the DIMMER button to adjust the brightness of the screen. The brightness will change in the following sequence: