TRIVIEW THR15X Operating Instructions Manual page 19

RESET：Press MENU button to reset the OSD H-position ， OSD V-position ，
OSD time out and OSD transparency value.
EXIT：Press MENU button to return to the MAIN MENU.
ASPECT RATIO：
Press – or + button to scrolling cursor up and down then press
select the desired aspect ratio.
EXIT：Press MENU button to return to the MAIN MENU.
AUDIO CONTROL：
Press – or + button to scrolling cursor up and down，then press
enable value change.
MENU
MENU
19
button to
button to