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Troubleshooting
Error checklist
Problem
No
operation
indication
No RF signal Transmitter and
RF signal
available,
no audio
signal,
"MUTE"
display
appears on
the display
panel
Audio signal
has a high
level of
background
noise
Audio signal
is distorted
If problems occur that are not listed in the above table or if
the problems cannot be solved with the proposed solutions,
please contact your local Sennheiser agent for assistance.
24
Possible cause
Batteries are flat or
accupack is flat
receiver are not on
the same channel
Transmitter is out of
range
Transmitter is muted
("MUTE")
Receiver's squelch
threshold is adjusted
too high
Transmitter doesn't
transmit a
pilot tone
Transmitter
sensitivity is
adjusted too low
Receiver's AF output
level is adjusted too
low
Transmitter
sensitivity is
adjusted too high
Receiver's AF output
level is adjusted too
high
Possible solution
Replace the
batteries or
recharge the
accupack
Set transmitter and
receiver to the same
channel
Check the squelch
threshold setting
or reduce the
distance between
transmitter and
receiving antenna
Deactivate the
muting function
Reduce the squelch
threshold
Activate the pilot
tone transmission
See "Adjusting the
sensitivity" on
page 21
Increase the audio
output level
See "Adjusting the
sensitivity" on
page 21
Reduce the AF
output level
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