Waste Toner Recovery - Xerox Phaser 7400 Service Manual

Color printer

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Waste Toner Recovery

Waste toner recovery moves the toner collected from the Imaging Unit drums and

Transfer Unit belt to the Waste Toner Reservoir located at the front of the printer.

Driven by the Waste Toner Motor, separate Augers in the Waste Toner Manifold and

Waste Toner Duct pull toner through a tube to the Waste Toner Reservoir. Waste toner

is moved within the reservoir by another Auger driven by the Waste Toner Motor.

Waste Toner Reservoir

Status of the Waste Toner Reservoir is monitored by the Engine Control Board. The

Engine Control Board receives count signals from the Waste Toner Reservoir Auger

Rotation Sensor located behind the Right Front Cover. This Hall-Effect sensor is

activated each time a small, magnetic disk, embedded in the reservoir auger gear,

passes in front of the sensor. The auger revolutions are converted into a life count.

Waste Toner Reservoir Detect Switch

Detects the presence of the Waste Toner Reservoir.

Waste Toner Reservoir Full Sensor

Detects when the Waste Toner Reservoir is full.

Waste Toner Reservoir Auger Rotation Sensor

Detects revolutions of the reservoir auger.

Waste Toner Auger Rotation Sensor

Detects revolutions of the manifold auger.

Waste Toner Motor

Drives augers in the Waste Toner Manifold, Waste Toner Duct, and Waste Toner

Theory of Operation

Auger Assembly

Transfer Unit

Waste Toner Chute