[. . . ] If you find a problem with this fixture, please return to your supplier for repair. [. . . ] In sound mode, the various effects will be controlled by the Sound Potentiometer. In Auto mode this fixture will be running automatically. 2 User Manual 151. 573 Power These light effects also have an IEC power mode daisy chain facility allowing you to run up to 5 light effects from one 240v power source. Modes Sound mode: The various effects will be controlled by the Sound Potentiometer and the light effects will change with the beat of the music. You can adjust the sensitivity by adjusting the sensitivity knob to the left for less sensitivity and to the right for more. Which also must be able to withstand 10 times weight of this fixture. Trouble Shooting 1. If the fixture does not power on, please check the power connection and fuse. If the fixture still does not work, please return to your supplier for repair. [. . . ] Do not open the fixture by yourself; there are no user serviceable parts inside 3. [. . . ]