Troubleshooting - Bose A20 Owner's Manual

Troubleshooting

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 39 of this guide for assistance.
WARNING: 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, batter-
ies, 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 25.
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.
What to do
• Make sure the headset is turned on.
• Press the power button to turn the headset on.
• Check the power indicator. See page 18 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
WARNING:
Replace batteries with alkaline batteries only. Do not use
any other battery chemistries.
• 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 10.
What to do
• Check to see if the volume controls are set too low. See "Volume
control" on page 18 for instructions on volume adjustment.
• Check the volume setting of intercom/radio.
• Make sure the headphone plugs are securely inserted into the panel
connectors.
• Try a different seat location in the aircraft.
Troubleshooting
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