Using this Martin ERA 300 Compact Profile LED Moving Head is quite straightforward. First, make sure to use an appropriate power cable as it doesn't include a TRUE1 one. Plug it in and power it on. The software version 1.1 is pre - installed, so you can start setting up the color mixing right away. To mix colors, use the control panel according to your needs. As for the broken part on the right side of the screen, it doesn't affect the main function, but be careful not to touch it to avoid further damage. When it comes to maintenance, keep it in a dry and clean place. Regularly check the power connections and the LED components to ensure long - term performance. Also, don't forget to check the power - on and LED on - times. If the LED on - time gets too long, it might be time to consider replacing the LED for better lighting quality.