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26 | MB Pro1 | MB Pro 2
If a problem occurs ...
If a problem occurs ...
Problem Possible cause Solution Page
Headset
cannot be
switched on
The rechargeable
battery is flat
Recharge the rechargeable
battery.
10
No audio signal The headset is not
paired with the mobile
phone
Check if the headset is
paired. If necessary, pair
the headset again.
11
The volume is adjusted
too low
Increase the volume. 16
The headset is
switched off
Switch the headset on. 14
Headset
cannot be
paired
The pairing does not
work
Check if your Bluetooth
device supports the HF or
HS profile.
–
The mobile phone is
switched off
Switch your mobile phone
on.
–
Bluetooth is
deactivated on the
mobile phone
Activate Bluetooth on your
mobile phone.
–
No voice
prompts
announced
(beeps only)
The voice prompts are
deactivated
Activate the voice
prompts.
15
Headset does
not react to
any button
press
The operation of the
headset is faulty
Reset the headset to the
factory default settings.
20
If a problem occurs that is not listed in the above table or if the problem cannot
be solved with the proposed solutions, please contact your local Sennheiser
partner for assistance.
To find a Sennheiser partner in your country, search at www.sennheiser.com/cco.