19   How to adjust your monitorHot key modeThe monitor keys perform as hot keys to provid e direct access to particular functions whenever the menu isn't currently displaying on-screen.Volume hot keyMode hot keyInput hot keyPress the   key to display the  Volume  indicators. Further press the   key will increase the volume, while the   key will decrease the volume.To Mute, press the Volume hot key for 3 seconds. To release Mute, press the Volume hot key for 3 more seconds.Press the   key continually to sw...