TROUBLESHOOTING
 59 
|
 ENG
Auto on/o
NOTE:  This function is not available for Dual plug and U174 models.
PROBLEM WHAT TO DO
Headset does not 
 power  on   automatically 
Make sure the AUTO ON operation switch is set to ON 
(see page 26).
Check the aircraft specifications to see if the jack is getting at least 
10V of DC power from the aircraft’s electrical system.
Headset does not 
 power  o   automatically
Make sure the AUTO OFF operation switch is set to ON 
(see page 26).
Disconnect the headset from the aircraft. Then power on the 
 headset and wait 15 minutes.
It may take up to 9 minutes for the headset to power o when not 
in use immediately after initial power up. If the headset has not 
powered o after 15 minutes, contact Bose customer service.
Reversionary mode
PROBLEM WHAT TO DO
Headset is in an 
 unresponsive  or 
 unusable  state
Set the REVERSIONARY  operation switch to ON (see page 28). 
This disables all non-critical functions,  including Bluetooth audio, 
AUX audio, and Tap  Control. Only  intercom  communications and 
Acoustic Noise  Cancelling are enabled.