Sennheiser Set 810 Notice D'emploi page 34

If problems occur...
- Are all jack plugs connected correctly?
- Are the receiver and sound source turned on and is the volume of the
receiver and sound source sufficient?
- Have you pulled the earbows apart?
- Is the battery inserted properly into the receiver?
- Have you charged the battery for at least 20 minutes?
- Are the transmitter's LEDs pointed at the receiver?
- Is the receiver's operating control pointed at the transmitter?
- Is there a free line of sight between transmitter and receiver?
- Should the problem persist, please contact your authorized dealer for
assistance.
Never open the unit!
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