Acer BM320 User Manual page 25

Adjusting the Brightness
Open the Brightness control and select the brightness setting using the Navi/
OK button. When you are done, press the Navi/OK button to go back one
level.
Adjusting the Volume
Open the Volume control and select the volume setting using the Navi/OK
button. When you are done, press the Navi/OK button to go back one level.
Selecting the Input
Open the Input control and select the desired input. You can also toggle Auto
Source On or Off. When you are done, press to go back one level.
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