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If a problem occurs ...
Problem
Transmitter cannot be
operated, "Locked"
appears on the display
panel
No operation indication
No RF signal at the
receiver
Very weak RF signal at
the receiver
RF signal available,
no audio signal at the
receiver
Audio signal has a high
level of background noise
Audio signal is distorted
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 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
No mains connection
Transmitter and receiver are not on the
same channel
If
"RF
Mute" additionally appears on the
transmitter display:
RF signal is deactivated
Transmission range is exceeded
No input signal at the transmitter
Very low input signal
Transmitter sensitivity is adjusted too
low
If
"AF
PEAK" additionally appears on the
transmitter display:
transmitter sensitivity is adjusted too
high
Receiver's audio output level is adjusted
too high
Accessories and spare parts
Possible solution
Deactivate the lock mode (see page 15 and
page 20).
Check the connections of the mains unit.
Set the transmitter and receiver to the same
channel. To do so, use the synchronization
function (see page 16).
Activate the RF signal (see page 16).
Reduce the distance between receiver and
transmitter.
Reposition the antennas.
Increase the transmission power (see page 21).
Check the squelch threshold setting on the
receiver.
Reduce the squelch threshold (see the
instruction manual of the receiver).
Check the audio level on the transmitter display
(see page 7).
Check the audio level on the transmitter display
(see page 7), increase the level of the input
signal or adjust the input sensitivity (see
page 20).
Adjust the transmitter sensitivity correctly.
Adjust the transmitter sensitivity correctly.
Reduce the audio output level (see the
instruction manual of the receiver).
37
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