Lexmark Optra C710 Service Manual - Page 63

5016-001 When the page is transported from the duplex rear unit for storage, the reverse sensor detects the paper. After the sensor detects the paper, for a specified time, the motor turns off and the print is stored. The duplex lower unit reverse motor supplies drive to the duplex rear unit and tray through gear 18Z. When the duplex tray is pulled out, the interlock switch opens and interrupts the circuit to the reverse motor. The tray condition sensor detects the position of the duplex tray and whether it is correctly installed. The transport sensor detects whether the page being transported passes though to the printer. General Information 1-39