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Cleaning the devices
31
SK 500 and SKM 500
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”.
Problem Possible cause Possible solution
Devices cannot be oper-
ated, “Locked” appears
on the display panel
Lock mode is activated Deactivate the lock mode (see page 22).
No operation indication Batteries are flat or
accupack is flat
Replace the batteries or recharge the accupack
(see page 16).
No RF signal at the
receiver
Bodypack transmitter/radio microphone
and receiver are not on the same channel
Synchronize the bodypack transmitter/radio
microphone with the receiver (see page21).
Set the bodypack transmitter/radio micro-
phone to the same channel as the receiver.
Bodypack transmitter/radio microphone
is out of range
Check the squelch threshold setting on the
receiver.
Reduce the distance between bodypack trans-
mitter/radio microphone and receiving
antenna.
RF signal is deactivated (“RF Mute”) Activate the RF signal (see page 24).
RF signal available,
no audio signal,
“MUTE” appears on the
display panel of the
receiver
Bodypack transmitter/radio microphone
is muted (MUTE)
Cancel the muting (see page 23).
Receiver’s squelch threshold is adjusted
too high
Reduce the squelch threshold setting on the
receiver.
Bodypack transmitter/radio microphone
doesn’t transmit a pilot tone
Activate or deactivate the pilot tone transmis-
sion (see page 28).
Audio signal has a high
level of background noise
or is distorted
Bodypack transmitter’s/radio micro-
phone’s sensitivity is adjusted too low/
too high
Adjust the input sensitivity (see page 28).