Bose QUIETCOMFORT ULTRA Mode D'emploi page 52

SYMPTOM
No sound from a source
device connected by an
audio cable
Poor sound quality from
a mobile device
connected by an
audio cable
Microphone doesn't
pick up sound
Multi-function button
doesn't change
the mode
TROU B LE S HO OT ING
SOLUTION
Make sure the headphones are powered on (see page 14).
The headphones don't support passive audio, meaning that they
require power to use the audio cable. If the battery is depleted,
use the USB cable to connect to an external power source, then
power on the headphones (see page 34).
Make sure you're using the Bose-provided audio cable.
Make sure both ends of the audio cable are securely connected
to the ports (see page 33).
Press play on your mobile device to make sure audio is playing.
Play audio from a different application or music service.
Play audio from content stored directly on your mobile device.
Increase the volume on the headphones, then increase the
volume on your mobile device.
Restart your mobile device.
Make sure both ends of the audio cable are securely connected
to the ports (see page 33).
Restart your mobile device.
Make sure you are wearing the headphones correctly. The inner
scrims (cloth covers) of the headphone earcups are marked with
an L (left earcup) and R (right earcup). Match the right earcup
with your right ear and the left earcup with your left ear.
Make sure the microphones aren't blocked and that they are free
of debris.
Clear the headphone device list (see page 30). Delete the
headphones from the Bluetooth list on your mobile device,
including any duplicate listings labeled LE (Low Energy). Connect
again (see page 27). Try another phone call.
Disable the Bluetooth feature on your mobile device,
then re-enable.
Use the Bose app to change the mode. To access this option,
tap Modes on the main screen.
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