Using this Sony HXCU - D70 camera control unit is easy. First, connect it to your HXC - D70 HD/SD camera using the appropriate cables. Then, plug in the provided power supply to start using it. When using, make sure the power supply is stable to avoid any malfunctions. For maintenance, keep it in a dry and clean place. Regularly check the cables for any signs of damage. If you notice any issues, stop using it immediately and contact Sony's customer service.