Troubleshooting; In Case Of Difficulty - Bose A20 Aviation Owner's Manual

English Tab 2, 10

In case of difficulty

Look for the problem in the left column of the table, then follow the "What to
do" instructions in the right column. If the problem persists, contact Bose using
the contact information on page 37 of this guide for assistance.
CAUTION: Do not attempt to disassemble or service the inside of the earcups or
other parts of the headset. Only the boom microphone cable, access cover, bat-
teries, windscreen, headband cushion, and ear cushions are replaceable by the
user. For instructions on how to care for and maintain the headset, see "Headset
Care and Maintenance" on page 23.
Noise Reduction
Problem
Communication,
but no Acoustic
Noise Cancelling
noise reduction in
either ear.
No active Acoustic
Noise Cancelling
noise reduction and
no communication.
Communications
Problem
Acoustic Noise
Cancelling noise
reduction, but no
incoming audio.
Tab 3, 11 Tab 4, 12
• Make sure the headset is turned on.
• Press the power button to turn the headset on.
®
• Check the power indicator. See page 16 for a description of the
power indicator.
• If using aircraft power, check the aircraft fuse or circuit breaker.
• If using battery power, make sure the batteries are fresh and cor-
rectly installed.
• Make sure the headphone plugs are securely inserted into the
panel connectors.
• Try using the headset in a different seat location.
• Remove the microphone assembly from the headset and check
for damage to the connector or pins. See "The microphone
assembly" on page 8.
• Check to see if the volume controls are set too low. See "Volume
control" on page 16 for instructions on volume adjustment.
• Check the volume setting of intercom/radio.
• Make sure the headphone plugs are securely inserted into the panel
connectors.
Tab 5, 13 Tab 6, 14
T
ROUBLESHOOTING
What to do
What to do
Tab 7, 15 Tab 8, 16
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