Using this ETC SP-1220BV dimmer rack is easy. First, connect it to your stage lighting system through the stage pin and Veam output connectors. The 6 D20 dimmer modules allow you to control the lighting intensity effectively. The CEM+ control module helps manage the overall operation. As for the camlocks, although we couldn't test them, you can try using them carefully. Be aware of the slightly bent door hinge. When opening or closing the door, do it gently to avoid further damage. For maintenance, keep the rack clean and dry. Regularly check the connections to ensure they are secure. If you notice any other problems, it's best to consult a professional.