Troubleshooting
Error checklist
ProblemPossible causePossible solution
No operation indicationNo mains connection Check the connections of the mains
cable
No RF signalTransmitter and receiver are not on Set transmitter and receiver to the
the same channelsame channel
Transmitter is out of rangeCheck the squelch threshold setting
(see Adjusting the squelch
threshold on page 22) or
reduce the distance between
transmitter and receiving antenna
RF signal available, Transmitter is muted (MUTE)Deactivate the muting function
no audio signal,(see operating manual of the
MUTE display appears on the transmitter)
display panelReceivers squelch threshold is See Adjusting the squelch
adjusted too highthreshold on page 22
Transmitter doesnt transmit a Switch the pilot tone transmission
pilot toneon the transmitter on or
switch the pilot tone evaluation on
the receiver off
Transmitter sensitivity is adjusted Adjust the transmitter sensitivity
too low correctly
Audio signal has a high level of Receivers AF output level is See Adjusting the audio output
background noiseadjusted too lowlevel on page 22
Transmitter sensitivity is adjusted Adjust the transmitter sensitivity
too highcorrectly
Audio signal is distortedReceivers AF output level is See Adjusting the audio output
adjusted too highlevel on page 22
No access to a certain channelDuring scanning, an RF signal has See Scanning the channel banks for
been detected on this channel and free channels on page 21
the channel has been locked
During scanning, a transmitter of See Multi-channel operation on
your system operating on this page 22
channel has not been switched off
During the soundcheck, only one One of the antennas is not Check the antenna connections
diversity display (I or II) appears on connected correctly
the display panel
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.
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ACEC
