Error Messages; Error Checklist; Safety Instructions - Sennheiser EM 3031-U Instructions For Use Manual

20

Error messages

The display panel of the receiver is also used by the integrated microprocessor to display error
messages for service purposes. If you see error messages such as
is a fault in the receiver unit which can only be corrected by your local Sennheiser service departement.
21

Error checklist

Error
Receiver does not work;
operating display dark
Receiver does not work;
operating display lit up
Sound distorted
Sound overlaid with background noise
22

Safety instructions

Never open electronic devices! This 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.
Always disconnect the unit from the main by removing the plug when you wish to change
connections or move the device to a different place.
Keep the system away from central heating radiators and electric heaters. Never expose it
to direct sunlight.
Use the system in dry rooms only.
Use a damp cloth for cleaning the device. Do not use any cleansing agents or solvents.
48
ERR ¡, ERR
Possible cause
Fuse defective
Frequency of transmitter does not agree
with receiving frequency
• Switching threshold adjustment for
mute function too high
AF output signal adjusted too high. Input
of the connected mixing console or
amplifier is overmodulated
Transmission microphone overmodulated
(see corresponding section in the operating
manual of the transmitter)
Transmitter not sensitive enough; where
appropriate, switch transmitter sensitivity
from "low" to "high"
™, ERR £ ERR ¢, there
or