User Manual

PXC 550 | 45
Troubleshooting
Problem Possible cause Possible solution Page
Headphones
and
smartphone
cannot
connect using
Bluetooth/NFC
Headphones are
switched off
Ensure that the
headphones are switched
on during pairing
17
Smartphone does not
support NFC pairing
Pair the headphones and
the smartphone manually
using Bluetooth
19
Headphones are in
flight mode or the
audio cable is plugged
into the audio input
Activate Bluetooth on the
headphones and/or unplug
the audio cable from the
audio input
38,
39
Bluetooth is
deactivated on the
headphones
Activate Bluetooth on the
headphones
38
Headphones
do not
automatically
go to pairing
mode
Bluetooth is
deactivated on the
headphones
Activate Bluetooth on the
headphones
38
Headphones must have
been paired previously
to some devices
Press the Effect Mode
Control button for
4 seconds
19
Headphones
do not go to
pairing mode
after the
4-second press
of the Effect
Mode Control
button
Bluetooth is
deactivated on the
headphones
Activate Bluetooth on the
headphones
38
Music is playing
through the
headphones or a call is
in progress
Restart the headphones
by switching them off and
on again. The headphones
cannot go to pairing mode
when music is being played
or calls are being made
Headphones
do not
attenuate the
ambient noise
even though
NoiseGard is
active
Ear pads are not
attached properly after
replacement/removal
Ensure that ear pads are
securely hooked to all
corners of the ear cups
41
Audio
stops when
adjusting the
headphones
Smart Pause is active
and adjusting or
taking the headphones
off triggers a pause
command
Ensure that the
headphones fit
comfortably around the
ears with gentle pressure
Deactivate Smart Pause in
CapTune if necessary
21
If you encounter a problem that is not listed in the table, or if the solutions
provided do not work, please contact an authorized Sennheiser service partner
for assistance.
To find a Sennheiser service partner in your country, visit www.sennheiser.com.