1. Power distribution board

2. Power supply

3，主机

4. Light source

5. Electric roller

6. Drum controller and 48V power supply (special for small machine)

7. Distributor (special for large machine)

8. Filters and relays (special for large machines)

9. Capacitor (special for large machine)

10. Infrared sensor

11. Receiver and video distributor

12, the power supply of the console

13, display, switch