Using the Panasonic AW - HS50 live video switcher is easy. First, connect your video sources to the appropriate input ports on the device. Then, select the source you want to display or switch between sources using the control panel. Since this unit doesn't come with a power supply, make sure to use a compatible one. When plugging in the power, double - check the voltage requirements to avoid damaging the device. As for maintenance, keep the switcher in a clean and dry place. Regularly dust it off with a soft, dry cloth. If there are any issues with the video quality or functionality, check the connections first before seeking further technical support.