Sennheiser SR 2020 D Cleaning the SR 2020 D, If a problem occurs

Cleaning the SR 2020 D

CAUTION! Liquids can damage the electronics of the transmitter!

Liquids entering the housing of the device can cause a short-circuit and damage the electronics.

Keep all liquids away from the device.

Do not use any solvents or cleansing agents.

Before cleaning, disconnect the device from the mains.

Only use a soft and dry cloth to clean the device.

If a problem occurs....

Problem	Possible cause	Possible remedy
No operation	No mains connection	Check the mains unit and the connection to
indication on the		the DC IN socket (see page 12)
transmitter
Audio signal is	Transmitter sensitivity is	Change the sensitivity of the microphone
distorted	adjusted too high	input or line input (see page 19)
		Select the source of the input signal
		(see page 19)
Occasional drop outs	Distance to the transmitter is	Reduce the distance to the transmitter
in the audio signal	too great
	Interference of unknown origin	Set the transmitter and receiver to a
		different channel (see page 17)
	Interference is being received	Change the transmitters to different
	from a second transmitter	channels (see page 17)
No radio waves on the	Antenna is badly positioned	Improve the position of the transmitting
receiver display		antenna
		Mount the antenna to the front of the rack
	No RF signal:	Set the transmitter and receiver to the same
	transmitter and receiver are	channel (see page 17)
	not on the same channel
	No RF signal:	Reduce the distance between receiver and
	transmission range is	transmitter
	exceeded	Improve the position of the transmitting
		antenna

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 agent for assistance.