Contact the after-sales service to check if the sensor is normal, if it is damaged, replace it with a new one.
It is also possible that the main control board is abnormal causing false alarms, contact the after-sales service to replace the main control board.
Expanded Information:
Canon Copy
Canon ( Canon, a Japan-based integrated group of world-leading producers of imaging and information products, has globalized and expanded its business into a wide range of fields through years of unremitting efforts since its establishment in 1937. Canon's product lineup*** is spread across three main areas: personal products, office equipment and industrial equipment, with major products including cameras and lenses, digital cameras, printers, copiers, fax machines, scanners, broadcasting equipment, medical devices and semiconductor production equipment. Canon is headquartered in Tokyo, Japan, and has four regional sales headquarters in the Americas, Europe, Asia and Japan, with 200 subsidiaries around the world and more than 100,000 employees.On March 9, 2016, Japan's Toshiba Corporation held a board meeting and ultimately decided to sell its Toshiba Medical Systems Corporation to Canon, which made an offer of JPY700 billion (approximately RMB40.5 billion). Canon's offer was 700 billion yen (about 40.5 billion yuan).
Canon, always in the continuous self-improvement, under the guidance of the corporate philosophy of "*** life", Canon is determined to become a truly outstanding company, a company widely trusted and respected around the world. By owning Canon products, users are assured of a simpler, safer, more convenient and happier life. In addition, by choosing Canon, users also support the company's efforts in environmental protection. Day after day, Canon continues to pursue innovation and endeavors to make tomorrow better.