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28 | M2 IEBT SW
Troubleshooting
Troubleshooting
Problem Possible cause Possible solution Page
Headphones
cannot be
switched on
Battery is empty Charge the
headphones.
13
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.
14
Volume too low Increase the volume. 18
Headphones are
switched off
Switch the headphones
on.
17
Headphones
cannot
connect
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
headphones is faulty
Clear the pairing
settings from the
headphones, and pair
again.
29
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.
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