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If a problem occurs ...
If a problem occurs ...
Problem
Receiver cannot be operated,
"Locked" appears on the display
panel
No operation indication
No RF signal
RF signal available, no audio
signal
Audio signal has a high level of
background noise
Audio signal is distorted
No access to a certain receiving
channel
During copying,
"Incompatible
Frequency" appears on the
display panel
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 solu-
tions, please contact your local Sennheiser partner for assistance.
To find a Sennheiser partner in your country, search at www.sennheiser.com under "Service & Support".
Possible cause
Lock mode is activated
Batteries are flat or
accupack is flat
Batteries are inserted the wrong
way round
Transmitter and receiver are not
on the same channel
Transmission range is exceeded Reduce the distance between receiver and
Transmitter's RF signal is deacti-
vated
("RF
Mute")
Transmitter is muted (MUTE)
Receiver's squelch threshold is
adjusted too high
Microphone is defective
Headphones are defective
Transmitter sensitivity is
adjusted too low
Transmitter sensitivity is
adjusted too high
Receiver's audio output level is
adjusted too high
Receiving channel is hidden for
the user
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.
Possible solution
Deactivate the lock mode (see page 12).
Replace the batteries or recharge the accu-
pack (see page 10).
Observe correct polarity when inserting the
batteries (see page 10).
Set the receiver and transmitter to the
same channel.
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).
Activate the RF signal
(see the instruction manual for the
transmitter).
Cancel the muting (see the instruction
manual for the transmitter).
Reduce the squelch threshold setting
(see page 17).
Replace the microphone.
Replace the headphones.
Adjust the transmitter sensitivity correctly
(see the instruction manual for the
transmitter).
Adjust the transmitter sensitivity correctly
(see the instruction manual for the
transmitter).
Reduce the audio output level (see
page 18).
Activate the visibility of the receiving
channel ("Active", see page 21).
Use a receiver from the same frequency
range.
Set a frequency that is available in both
frequency ranges.
Tourguide 1039
| 23
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