Specifications

Principles of Operation Function of Major Components - 25
Paper Transport (1 of 2)
Pickup Drive Assembly
The pickup drive assembly is responsible for mechanical drive to the cassette and manual
feed pickup rollers and to the cassette and preregistration feed rollers. It is powered by the
pickup motor. Contained within the assembly itself are the two feed rollers and the cassette
feed solenoid.
Main Drive Assembly
The main drive assembly is responsible for all mechanical drive from the registration
roller through paper delivery. It is powered by the main motor.
Drive Transfer Assembly
The drive transfer assembly is the gear train that transfers mechanical drive from the
main motor to the fuser assembly, delivery roller shaft, and photosensitive drum. An idler
gear is located along the path of the drive force transmission to the fuser. The idler gear
closes the path when the toner cartridge is installed
Registration Feed Roller
The registration feed roller, which is driven by the operation of the main drive assembly,
feeds paper in concert with the registration pinch roller. The pinch roller is spring-loaded
but passive. It receives no mechanical drive.
Registration Sensor/Actuator
The registration sensor is mounted to the power supply assembly. The registration actuator
is mounted to the frame. The sensor detects when paper reaches the registration position.
The signal of the registration sensor is used to position paper in synch with the toner image
on the drum.
Preregistration Sensor/Actuator
The preregistration sensor is mounted to the power supply assembly. The actuator is
mounted to the chute registration assembly. The preregistration sensor detects when paper
reaches the preregistration position.
Paper Deflector Solenoid
Switches the direction of the paper deflector guide.
Paper Deflector Guide
This guide is on the delivery side of the fuser. It controls whether paper passes into the
duplexer/face-up tray or outward onto the output tray.