Acer K520 - Manual (Page 35)

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English
Management
Audio
ECO Mode Choose "On" to dim the projector lamp which will lower power
consumption, extend the lamp life and reduce noise. Choose "Off"
to return normal mode.
High Altitude Choose "On" to turn on High Altitude mode. Operate the fans at
full speed continuously to allow for proper high altitude cooling of
the projector.
Auto Shutdown The projector will automatically shutdown when there is no signal
input after the allocated time. (in minutes)
LED Calibration The color will be automatically fine tuned while the system is
turning off after continuous running over 30 min. (it will need 10
seconds to complete the process)
Volume • Press to decrease the volume.
• Press to increase the volume.
Mute • Choose "On" to mute the volume.
• Choose "Off" to restore the volume.
Power On/Off Volume • Select this function to adjust the notification volume when
turning the projector on/off.
Alarm Volume • Select this function to adjust the volume of any warning
notifications.