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23
If a problem occurs ...
If a problem occurs ...
Problem Possible cause Solution
No operation
indicator –
headset cannot
be switched on
The battery pack is flat. Recharge the battery pack
(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 (page 13).
No audio signal
during Bluetooth
connection
The headset is switched
off.
Switch the headset on (page 15).
The headset is not
paired with an audio
source.
Check if the headset is paired.
If necessary, pair the headset with
the audio source again (page 10).
The Bluetooth function
on the headset is
switched off.
Switch the Bluetooth function on
the headset on (page 17).
The audio cable is
connected to the
headset.
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).
The volume is adjusted
too low.
Increase the volume (page 17).
Headset cannot
be paired
The pairing does not
work.
Check if the audio source supports
the A2DP profile/the HSP/HFP
profile. If not, use one of the
optional dongles.
The audio source is
switched off.
Switch the audio source on
(page 10).
No audio signal
during Noise-
Gard operation
The headset is switched
off.
Switch the headset on (page 15).
The TalkThrough
function is switched on.
When in TalkThrough
mode, the audio signal
is not available.
Switch the TalkThrough function
off (page 16).
Headset does
not react to any
button press
The operation of the
headset is faulty.
Remove the battery pack
from the headset. Reinsert the
battery pack into the headset.
Switch the headset on again.
Bluetooth
connection is
suddenly inter-
rupted
The Bluetooth button
has been pressed too
long.
Switch the Bluetooth function on
(page 17).
