Bose A20 manual In case of difficulty, Troubleshooting, Noise Reduction, Communications, Problem

TROUBLESHOOTING

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	What to do
Communication,	• Make sure the headset is turned on.
but no Acoustic	• Press the power button to turn the headset on.
Noise Cancelling®
	• Check the power indicator. See page 16 for a description of the
noise reduction in
either ear.	power indicator.
	• If using aircraft power, check the aircraft fuse or circuit breaker.
	• If using battery power, make sure the batteries are fresh and
	correctly installed.
	Note: Replace batteries with alkaline batteries only. Do not use any
	other battery chemistries.
No active Acoustic	• Make sure the headphone plugs are securely inserted into the
Noise Cancelling	panel connectors.
noise reduction and	• Try using the headset in a different seat location.
no communication.
	• Remove the microphone assembly from the headset and check
	for damage to the connector or pins. See “The microphone
	assembly” on page 8.
Communications

Problem

Acoustic Noise Cancelling noise reduction, but no incoming audio.

What to do

•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.

•Try a different seat location in the aircraft.

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