Acer AT2001 Service Manual page 28

Button Key Definition
BUTTON VIEWING FUNCTION (OSD OFF)
Lowers the sound level.
Increases the sound level.
Selects the input source.
Turns the LCD TV ON/OFF.
Activates the OSD main menu.
Displays the previous stored
channel.
Displays the next stored
channel.
MENU FUNCTION (OSD ON)
Reduces a menu option value.
Displays a submenu with selections
for the current menu option.
Increases a menu option value.
N/A
N/A
Returns to the previous menu or to
normal viewing.
Selects the previous menu option.
Selects the next menu option.