If the above scheme still can't solve your problem, please log in to Epson official website's "Online Engineer": click the following link /apps/tech_support/, enter Epson official website, slide to the middle position and the far left, and click "Engineer Online" to communicate with Epson engineers in real time and solve the problem in time. (Epson "Online Engineer" service hours: 8: 30 Monday to Friday-18: 00)