Xerox Phaser 7400 Service Manual

Theory of Operation 2-47
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.
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
Reservoir.
Waste Toner
Auger Assembly
Waste Toner Reservoir
Transfer Unit
Waste Toner Chute
s7400-397

Xerox Phaser 7400 Specifications

General

Color	Yes
Print technology	Laser
Maximum resolution	600 x 1200 DPI
Time to first page (black, normal)	12 s
Print speed (black, normal quality, A4/US Letter)	40 ppm
Print speed (color, normal quality, A4/US Letter)	36 ppm
Storage media	HDD
Internal memory	512 MB
Processor model	PowerPC
Maximum internal memory	1 MB
Internal storage capacity	20 GB
Total input capacity	800 sheets
Maximum input capacity	3000 sheets
Paper tray 2 input capacity	350 sheets
Auto document feeder (ADF) input capacity	1650 sheets
Maximum print size	297 x 420 mm
Paper tray media types	Envelopes, Labels, Transparencies
Non-ISO print media sizes	Executive (184 x 267mm), Folio (media size), Letter (media size), Statement (140 x 216mm), Legal (media size)
Maximum ISO A-series paper size	A3
Power requirements	100-240V, 50/60Hz
Networking features	Fast Ethernet
Supported media weight(s)	270 g/m²
Maximum operating temperature range (T-T)	10 - 32 °C
Certification	FCC p.15 A, CE
Storage temperature (T-T)	-20 - 60 °C
Operating temperature (T-T)	-4 - 140 °F
Storage relative humidity (H-H)	10 - 95 %
Operating relative humidity (H-H)	20 - 80 %
Maximum duty cycle	150000 pages per month

Weight and Dimensions

Dimensions (WxDxH)	1438 x 623 x 975 mm