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Tourguide 1039 | 23
If a problem occurs ...
If a problem occurs ...
Please also read the chapter “If a problem occurs ...” in the instruction manual for your transmitter.
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 under “Service & Support”.
Problem Possible cause Possible solution
Receiver cannot be operated,
“Locked” appears on the display
panel
Lock mode is activated Deactivate the lock mode (see page 12).
No operation indication Batteries are flat or
accupack is flat
Replace the batteries or recharge the accupack
(see page 10).
Batteries are inserted the wrong
way round
Observe correct polarity when inserting the
batteries (see page 10).
No RF signal Transmitter and receiver are not on
the same channel
Set the receiver and transmitter to the same
channel.
Transmission range is exceeded Reduce the distance between receiver and
transmitter.
Check the squelch threshold setting and,
if necessary, reduce it (see page 17).
Increase the transmitter’s transmission power
(see the instruction manual for the
transmitter).
Transmitter’s RF signal is deacti-
vated (“RF Mute”)
Activate the RF signal
(see the instruction manual for the
transmitter).
RF signal available, no audio signal Transmitter is muted (MUTE) Cancel the muting (see the instruction manual
for the transmitter).
Receiver’s squelch threshold is
adjusted too high
Reduce the squelch threshold setting
(see page 17).
Microphone is defective Replace the microphone.
Headphones are defective Replace the headphones.
Audio signal has a high level of
background noise
Transmitter sensitivity is adjusted
too low
Adjust the transmitter sensitivity correctly
(see the instruction manual for the
transmitter).
Audio signal is distorted Transmitter sensitivity is adjusted
too high
Adjust the transmitter sensitivity correctly
(see the instruction manual for the
transmitter).
Receiver’s audio output level is
adjusted too high
Reduce the audio output level (see page 18).
No access to a certain receiving
channel
Receiving channel is hidden for the
user
Activate the visibility of the receiving channel
(“Active”, see page 20).
During copying, “Incompatible
Frequency” appears on the display
panel
You are using receivers from dif-
ferent frequency ranges and you
have set a frequency that is not
available in the frequency range
of one of the receivers.
Use a receiver from the same frequency range.
Set a frequency that is available in both
frequency ranges.