If A Problem Occurs - Sennheiser Travel MM 450 Instruction Manual

If a problem occurs ...

Problem Possible cause
No operation The battery pack is flat.
indicator –
headset cannot
be switched on
No audio signal The jack plug of the
when the audio audio cable is not
cable is properly connected.
connected
No audio signal The headset is switched
during Bluetooth off.
connection
The headset is not
paired with an audio
source.
The Bluetooth function
on the headset is
switched off.
The audio cable is
connected to the
headset.
The volume is adjusted
too low.
Headset cannot The pairing does not
be paired work.
The audio source is
switched off.
No audio signal The headset is switched
during Noise- off.
Gard operation
The TalkThrough
function is switched on.
When in TalkThrough
mode, the audio signal
is not available.
Headset does The operation of the
not react to any headset is faulty.
button press
Bluetooth The Bluetooth button
connection is has been pressed too
suddenly inter- long.
rupted
If a problem occurs ...
Solution
Recharge the battery pack
(page 8).
Check the connection to your
audio source (page 13).
Switch the headset on (page 15).
Check if the headset is paired.
If necessary, pair the headset with
the audio source again (page 10).
Switch the Bluetooth function on
the headset on (page 17).
The connection of the audio cable
automatically switches off the
Bluetooth connection. Remove the
audio cable and then switch the
Bluetooth function on again
(page 13).
Increase the volume (page 17).
Check if the audio source supports
the A2DP profile/the HSP/HFP
profile. If not, use one of the
optional dongles.
Switch the audio source on
(page 10).
Switch the headset on (page 15).
Switch the TalkThrough function
off (page 16).
Remove the battery pack
from the headset. Reinsert the
battery pack into the headset.
Switch the headset on again.
Switch the Bluetooth function on
(page 17).
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