Power Indicator; Intercom Volume Controls - Bose A20 Guia Del Usuario

Power indicator

New alkaline AA batteries will generally supply at least 45 hours of power for the
headset. Battery life varies with the ambient noise level of the aircraft, temperature,
ear cushion condition, use of the Bluetooth
power indicator changes color to indicate the power status, as follows:
Indicator Power
color source
Green Aircraft
Green Battery
Amber Battery
Red Battery
Off None
Replace batteries with alkaline batteries only. Do not use any other
Warning:
battery chemistries.
*When the batteries reach this level, the Bluetooth feature is disabled to conserve
remaining power. You will hear a tone, indicating that your Bluetooth device is
being disconnected and the Bluetooth feature is turning off.

Intercom volume controls

The left and right volume control wheels on the control module adjust the intercom
volume of the corresponding earcup. With Acoustic Noise Cancelling
control will be set to the maximum level.
Avoid setting the volume levels too high. Exposure to loud sounds may
Caution:
cause hearing damage.
Holding the control module upright and facing you:
• Use the left wheel to adjust volume of the left earcup.
• Use the right wheel to adjust volume of the right earcup.
Overall headset volume control requires adjustments at both the aircraft intercom
or radio, and at the headset control module. Even at its lowest setting, neither
volume control wheel can completely turn off the volume.
feature, and age of the batteries. The
®
Type of light Indicates
Slow flashing Power ON
Flashing Power ON and batteries good
Fast flashing Power ON, but batteries low
(8 hours or less remaining)
Very fast Power ON, but batteries very low*
flashing (2 hours or less remaining)
None Power OFF or batteries depleted
Using the Headset
off, volume
®
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