If a problem occurs ...
MM 550-X
| 23
If a problem occurs ...
Problem
Possible cause
Solution
Page
No operation
indicator –
headset
cannot be
switched on
The battery pack
is flat.
Recharge the battery pack.
9
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.
14
No audio
signal during
Bluetooth
connection
The headset is
switched off.
Switch the headset on.
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.
13
The
Bluetooth
function on the
headset is
switched off.
Switch the
Bluetooth
func-
tion on the headset on.
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.
14
The volume is
adjusted too low.
Increase the volume.
17
Headset
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.
12
No audio
signal during
NoiseGard
operation
The headset is
switched off.
Switch the headset on.
15
The TalkThrough
function is
switched on.
When in Talk-
Through mode,
the audio signal
is not available.
Switch the TalkThrough
function off.
17
