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.
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General Information