Inserting And Replacing The Batteries - Bose A20 Aviation Owner's Manual

Tab 8, 16 Tab 7, 15
P
REPARING THE
3. To change a switch position, use a pen or a small, flat-tipped screwdriver to
gently move the switch.
The following table shows possible positions, default setting, and purpose for
each switch.
Switch
1. Auto Off
function
2. Mono/Stereo
selection
Auto Off functionality
The Auto Off feature detects when the headset is not in use and shuts it off after
several minutes to preserve battery power. The exact time it takes to shut off
varies and can range between 3 to 9 minutes after you stop using the headset.
When the headset is running on battery power only and is not plugged in to an
intercom, it will shut off even when there is an auxiliary input present.
If you are on a phone call and unplugged from an intercom, the headset will
allow you to complete your call, then it will turn off approximately three seconds
after the call is terminated.
Note: To use the headset when unplugged from the intercom to listen to auxiliary
input audio or as a Bluetooth
calls, we recommend you disable the Auto Off feature for uninterrupted functionality.

Inserting and replacing the batteries

CAUTION: If the batteries do not fit correctly, do not force them in. Forcing an
improper connection will cause permanent damage to the control module.
To insert or replace the batteries
1. Turn off headset power.
2. Press down firmly on the battery compartment cover and slide the cover to
release. The battery door is tethered. Do not detach the door from the
control module.
3. Insert the two supplied alkaline AA batteries into the control module,
observing proper polarity.
4. Replace the battery compartment cover.
Note: Rechargeable batteries will alter the accuracy of the battery power indicator.
10
Tab 6, 14 Tab 5, 13
H U
EADSET FOR
Options
ON, OFF
Default: ON
Mono, Stereo
Default: MONO
®
wireless technology-enabled headset to make or receive
Tab 4, 12
SE
Purpose
Set at the factory to enable the Auto Off function. The
headset will turn off after 3 to 9 minutes of inactivity.
To disable Auto Off, set the switch to OFF. With the
switch in OFF position, the Acoustic Noise
®
Cancelling system will not turn off until you press
and hold the power button for at least one second.
Set at the factory for mono audio systems (to
provide audio in both ears). Set it to stereo (ST) if
your aircraft has a stereo intercom.
Tab 3, 11 Tab2, 10 English