Lexmark C720 Service Manual - Page 46

5024-001 Optical System The optical system consists of two functional parts that forms an electrostatic latent image on the OPC belt using a laser light. Optical unit Scanner motor (SCM) Paper Transport System The paper transport system consists of five functional parts that picks up paper from the paper cassette, separates the transported paper from the transfer drum, and exits it from the printer after fusing the toner image on the paper. Paper cassette Transport Paper discharge Fuser Paper exit Control System The control system consists of four control parts and runs the printer by processing the interface signals transmitted from the computer and the other printer systems such as the print, transfer, optical, and transport system. Sequence control Laser control Fusing temperature control Interface control 1-16 Service Manual