Locate the mic filter at the back of the rec tube. Use the filter removal end of the mic filter pin to remove the defective filter. Make sure the pin is pushed
all the way in to get the best grip on the defective filter (see red circle)
Pull back the pin with the defective filter. In the other end of the filter pin, the new filter is attached. Push it into the hole/mic sound inlet. Make sure the filter
is correct in place. Turn the pin clockwise until the new filter is released
Pull back the pin. Check that the filter is correct in place