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If a problem occurs...
If a problem occurs...
In the following table, the term “transmitter” refers to both “bodypack transmit-
ter” and “radio microphone”.
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.
Problem Possible cause Possible solution
No operation
indication on the
transmitter
Batteries are flat or
accupack is flat
Replace the batteries or recharge
the accupack (see page 33)
No radio waves
on the receiver display
No RF signal, transmitter
and receiver are not on
the same channel
Set transmitter and receiver to
the same channel (see page 35)
No RF signal, transmitter is
out of range
Reduce the distance between receiver
and transmitter
Transmitter is in
energy saving mode
(see page 16)
Check the signal source
RF signal available,
no audio signal,
the red LED LOW
BATT/MUTE
¶ lights
up on the transmitter
Transmitter is muted
(MUTE)
Deactivate the muting function
(see page 39)
Audio signal is
distorted
Transmitter sensitivity is
adjusted too high
Change the sensitivity of the
microphone input (see page 42) or
line input (see page 41)
Operating time of
the transmitter is
drastically reduced
Normal ageing or damage
of BA 2015 accupack
Replace the BA 2015 accupack
Operating time of the
receivers is drastically
reduced
Normal ageing or damage
of rechargeable batteries
Have the rechargeable batteries
replaced by a Sennheiser Service
Department
Occasional drop outs
in the audio signal
Distance to the
transmitter is too great
Reduce the distance to
the transmitter
Interference is being
received from an
external source
Change the system to a different
channel
Interference is being
received from a second
transmitter
Change the transmitters to
different channels