Cleaning the devices

To clean the radio microphone’s sound inlet basket (MMD 835-1, MMD 845-1, MMD 935-1, MMD 945-1, MME 865-1):

Unscrew the upper sound inlet basket from the microphone head by turning it counter- clockwise.

CAUTION!

Liquids can damage the microphone head!

Liquids can damage the microphone head.

Only clean the upper sound inlet basket.

Remove the foam insert.

There are two ways to clean the sound inlet basket:

–Use a slightly damp cloth to clean the upper sound inlet basket from the inside and outside

–or scrub with a brush and rinse with clear water.

If necessary, clean the foam insert with a mild detergent or replace the foam insert.

Dry the upper sound inlet basket.

Dry the foam insert.

Reinsert the foam insert.

Replace the sound inlet basket on the microphone head and screw it tight.

You should also clean the contact rings of the microphone head from time to time:

Wipe the contact rings of the microphone head with a dry cloth.

For information on cleaning the MMK 965-1 microphone head, refer to its instruction manual.

If a problem occurs ...

EM 100

Problem

Possible cause

Possible solution

Receiver cannot be oper-

Lock mode is activated

Deactivate the lock mode (see page 21).

ated, “Locked” appears

 

 

on the display panel

 

 

No operation indication

No mains connection

Check the connections of the mains unit.

No RF signal

Transmitter and receiver are not on the

Set the transmitter and receiver to the same

 

same channel

channel. To do so, use the synchronization

 

 

function (see page 20)

 

Transmitter is out of range

Check the squelch threshold setting

 

 

(see page 25).

 

 

Reduce the distance between transmitter and

 

 

receiving antennas.

 

 

 

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