15TroubleshootingPlease check the following points in case of malfunctions:No sound Plug in the power plug properly. Adjust the volume to the correct level. Make sure the desired source is selected.The system does not respond at the touch of a button Unplug the AC adapter and reconnect it.Problems with radio reception Reorient the antenna. Find a more suitable location. Other electrical appliances interfere with the reception. Location not suitable for receiving DAB + signals.Maintenance and careCleaning the housing: Use a cloth lightly moistened with a mild detergent. Do not use detergents con-taining alcohol, ammonia or scouring agents.Cautions on condensationCondensation (dew) may form inside the unit if there is a significant difference between the temperature ofthe unit and the ambient temperature. If condensation occurs inside the unit, proper function is no longerguaranteed. In this case, you have to wait a few hours; After the moisture has dried, the device can bereused.Special care should be taken in the following circumstancesWhen the unit is moved from one place to another at a much higher or lower temperature, or when thehumidity at the installation site increases, etc.