Sennheiser EM 3532-U Service Manual download pdf (Page 32)

26 Error checklist

Error Possible cause

Receiver does not work;

display panel dark

 Fuse defective

Receiver does not work;

display panel lit up

 Transmission frequency does not agree

with receiving frequency

 Squelch threshold adjusted too high

Sound distorted

 AF output signal adjusted too high. Input

of the connected mixing console or

amplifier is overmodulated

 Transmission microphone overmodulated,

reduce microphone sensitivity

(see corresponding section in the operating

manual of the transmitter)

Sound overlaid with background noise

 Transmitter not sensitive enough; where

appropriate, switch transmitter sensitivity

from “low” to “high” or increase trans-

mitter sensitivity from - 30 dB to 0 dB via

operating menu (SKM 3072-U only)

27 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 receiver from the mains by removing the plug when you wish to

change connections or move the device to a different place.

 Keep the receiver away from central heating radiators and electric heaters. Never expose it

to direct sunlight.

 Use the receiver in dry rooms only.

 Use a damp cloth for cleaning the receiver. Do not use any cleansing agents or solvents.

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Sennheiser EM 3532-U Service Manual Page 32