User's Guide

Presence Grey Bluetooth headset
IF A PROBLEM OCCURS ...20
If a problem occurs ...
Problem Possible cause Solution Page
Headset cannot be
switched on
The rechargeable battery is flat.
Recharge the rechargeable battery. 5
No audio signal The headset is not paired with the
mobile phone.
Check if the headset is paired. If
necessary, pair the headset again.
6
The volume is adjusted too low.
Increase the volume. 13
The headset is switched off.
Switch the headset on. 11
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 the mobile phone on. –
No voice prompts
announced (beeps only)
The voice prompts are disabled.
Enable the voice prompts. 14
Headset does not react
to any button press
The operation of the headset is
faulty.
Reset the headset to the factory default
settings.
20
Connection
establishment takes a
long time
Bluetooth device 1 is not available.
Toggle between your two Bluetooth
devices.
11
No Bluetooth connection
via dongle BTD 800 USB
Dongle not inserted correctly in
the computer
Plug in the dongle again. 8
Dongle and Presence Grey not
connected
Pair the dongle and your Presence Grey
headset (Pairing).
8
Dongle BTD 800 USB
does not accept new
devices (Pairing)
Dongle’s pairing list disturbed Clear the list of previously paired devices:
Press and hold the dongle’s button for
3 seconds to enter pairing mode.
The LED alternately flashes blue and
red.
Double press the dongle’s button.
The LED flashes purple three times.
The pairing list is cleared.
–
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.
Restoring factory default settings (Reset)
OFF
3x
”Power off“
ON
Gently push the on/off power slide towards the
headset.
The voice prompt “power off” is announced in the
headset and the LED flashes red 3 times. The headset
ends the call and switches off.
Keeping both Volume buttons pressed, gently pull the
on/off power slide away from the headset.
The LED flashes 3 times purple and then alternately
blue and red. The headset tries to pair with the
Bluetooth devices (see page 6)