Important safety instructions 1. Do not expose the receiver to direct sunlight, high humidity, dirt, heavy vibration or extreme temperatures. 2. Place the unit on a solid and plane surface. 3. Make sure that there is sufficient ventilation around the receiver. Do not place the unit on a soft surface such as a carpet. Make sure that there is a clearance of 20 cm behind the unit. 4. Do not open the cabinet. Only qualified technicians are allowed clean the internal parts. 5. Make sure that liquid a