Technical information

28
Troubleshooting
In case of difficulty
Identify the problem in the left column of the table. Perform the corrective actions suggested in
the right column. If the problem persists, contact the Bose
®
Aviation Headset Department,
using the contact information on page 33 of this guide, for assistance.
Problem What to do
Communication but no active • Ensure that the headset is powered, and that the ON/OFF
noise reduction in either ear switch is set to ON.
• If using aircraft power, check the aircraft fuse or circuit
breaker. The LED should be lit.
• If using battery power, ensure that the battery is fresh and
correctly installed.
• Check that the LED is lit. (A blinking green LED indicates
a good battery. A steady red LED indicates a low battery.)
Active noise reduction but no • Check to see if the volume controls are set too low. (See
communication or very low Volume Control for method of adjusting volume.)
volume communication in • Check the volume setting of intercom/radio.
both ears • Check the headset aircraft connection.
Reduced active noise reduc- • Check the ports at the outside surface of each earcup to
tion, intermittent clicking ensure they are not blocked. If dust or dirt is present,
sounds, or communication carefully remove the debris using tweezers. Do not
distortion in a loud environment vacuum or blow out debris.
Reduced volume in one ear • Check to see if the volume control is set too low. (See
only Volume Control for method of adjusting volume.)
Stereo missing or communi- • If using with a monaural aircraft audio system, verify
cations in one ear only that the stereo/mono switch is set to mono.
• If plugged into a monaural system with the switch set to
stereo, you will hear only through the earcup to which
the cable is attached. Set the switch to mono.
Squealing, whistling, or • Check to see if the protective inner screen is damaged.
chirping sound when the
system is turned on