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28 | M2 AEBT
Troubleshooting
Troubleshooting
Problem Possible cause Possible solution Page
Headphones
cannot be
switched on
Battery is empty Charge the headphones. 12
Battery is completely
exhausted/worn out
Visit an authorized
Sennheiser service center
for battery replacement.
No audio signal Headphones are not
paired with your device
Check if the headphones
are paired. If necessary,
pair the headphones with
your device again.
13
Volume too low Increase the volume. 18
Headphones are
switched off
Switch the headphones on. 17
Headphones
cannot connect
Pairing does not work Check if your smartphone
supports the HFP or HSP
Bluetooth profile.
Smartphone is
switched off
Switch your smartphone
on.
Bluetooth is
deactivated on your
smartphone
Activate Bluetooth on your
smartphone.
Headphones
do not respond
to any button
press
Function of the head-
phones is faulty
Clear the pairing settings
from the headphones.
29
If you encounter a problem that is not listed in the table, or if the solutions pro-
vided 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.