Sennheiser Tourguide 2020-D Instruction Manual page 66

If a problem occurs...
In the following table, the term "transmitter" refers to both "bodypack trans-
mitter" and "radio microphone"�
Problem
No operation indication
on the transmitter
No radio waves on the
receiver display
RF signal available, no
audio signal, the red
LED LOW BATT/MUTE
7 lights up on the
transmitter
Audio signal is distort-
ed
Operating time of the
transmitter is drastical-
ly reduced
Operating time of the
receivers is drastically
reduced
Occasional drop outs in
the audio signal
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
agent for assistance�
Possible cause
Batteries are flat or
accupack is flat
No RF signal, trans-
mitter and receiver
are not on the same
channel
No RF signal, trans-
mitter is out of range
Transmitter is in ener-
gy saving mode
(see page 89)
Transmitter is muted
(MUTE)
Transmitter sensitivi-
ty is adjusted too high
Normal aging or
damage of BA 2015
accupack
Normal aging or dam-
age of rechargeable
batteries
Distance to the trans-
mitter is too great
Interference is being
received from an
external source
Interference is being
received from a sec-
ond transmitter
If a problem occurs���
Possible solution
Replace the batteries or
recharge the accupack
(see page 117)
Set transmitter and receiver
to the same channel
(see page 121)
Reduce the distance be-
tween receiver and trans-
mitter
Check the signal source
Deactivate the muting func-
tion (see page 125)
Change the sensitivity of
the microphone input (see
page 127) or line input
(see page 127)
Replace the BA 2015 accu-
pack
Have the rechargeable
batteries replaced by a
Sennheiser Service Depart-
ment
Reduce the distance to the
transmitter
Change the system to a
different channel
Change the transmitters to
different channels
Tourguide 2020-D | 139