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25 Safety instructions
Ǡ Never open electronic devices! Servicing and programming must only be
done by authorised personnel and is all the more important for current-
carrying units. If devices are opened by customers in breach of this
instruction, the warranty becomes null and void.
Ǡ Keep the receiver away from central heating radiators and electric
heaters.
Ǡ Use a damp cloth for cleaning the receiver. Do not use any cleansing
agents or solvents.
26 Error messages
The display of the receiver is also used by the integrated microprocessor to
display error messages for service purposes. If you see error messages such
as „EE_DEF“ or „rS_232“, there is a fault in the receiver unit which can only
be corrected by your local Sennheiser service department.
27 Error checklist
Error Possible cause
Receiver does not work; Ǡ Check the camcorder’s power supply;
display panel dark if necessary, switch power supply on
separately
Receiver does not work; Ǡ Frequency of transmitter does not agree
display panel lit up with receiving frequency
Ǡ Squelch threshold adjusted too high
Sound distorted Ǡ Transmission microphone over-
modulated; reduce AF level or
transmitter sensitivity
Sound overlaid with Ǡ Transmitter not sensitive enough;
background noise where appropriate, increase transmitter
sensitivity