Sennheiser EM 3532-U manual Error checklist, Safety instructions, Possible cause

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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