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21
If a problem occurs ...
If a problem occurs ...
Problem
Possible cause
Solution
No operation
indicator –
headphones
cannot be
switched on
The battery pack is flat.
Recharge the battery pack
(see page 8).
No audio signal
when the
audio cable is
connected
The jack plug of the
audio cable is not
properly connected.
Check the connection to your
audio source (see page 15).
No audio signal
during
Bluetooth
connection
The headphones are
switched off.
Switch the headphones on
(see page 11).
The headphones are
not paired with an
audio source.
Check if the headphones are
paired. If necessary, pair the
headphones with the audio
source again (see page 13).
The
Bluetooth
function
on the headphones is
switched off.
Switch the
Bluetooth
function
on the headphones on
(see page 16).
The audio cable is
connected to the
headphones.
The connection of the audio cable
automatically switches off the
Bluetooth
connection. Remove the
audio cable and then switch the
Bluetooth
function on again
The volume is adjusted
too low.
Increase the volume
(see page 16).
Headphones
cannot be paired
The pairing does not
work.
Check if the audio source supports
the A2DP profile. If not, use one of
the optional dongles.
The audio source is
switched off.
Switch the audio source on
(see page 12).
Headphones do
not react to any
button press
The operation of the
headphones is faulty.
Remove the battery pack
from the headphones. Reinsert the
battery pack into the headphones.
Switch the headphones on again.
Bluetooth
connection
is suddenly
interrupted
The
Bluetooth
button
has been pressed too
long.
Switch the
Bluetooth
function on
