Xerox Phaser 7400 Service Manual

Theory of Operation 2-35
■ Registration Motor
This motor drives the Registration Rollers to pull media from the tray into the
paper path.
■ Registration Clutch
This clutch transfers Registration Motor drive to the Registration Roller.
■ Registration Roller
This roller aligns the leading edge of the sheet to correct any skew.
■ Registration Sensor
This sensor detects media as it arrives at the Registration Rollers.
■ Feed-Out Sensor
This sensor detects the media as it leaves the Tray 3 Feed Rollers.
■ Transfer Unit Entrance Sensor
Detects the media as it leaves the Registration Roller #1.
■ Lift Motor
This motor lifts the tray’s base plate raising the media to the pre-feed position.
■ Feed Motor
This motor drives the Feed Rollers to pick paper from the tray and position it at
the Registration Roller.
■ Low Paper Sensor
The actuator lowers as print media is used in the tray. When the actuator lowers
to a pre-determined position, it blocks the sensor to trigger a low paper status.
Duplex Unit
The Duplex Unit receives media diverted to the Side Exit by the Exit Gate. The media
is detected by the Duplex Entrance Sensor and drawn into the Duplex Unit by the
Entrance Roller. The media is inverted and exits the Duplex Unit just above
Registration Roller #2. Media moves through the Duplex Unit as follows:
1. After Side 2 is printed, the Exit Gate Solenoid switches the Exit Gate to its side
output position. This directs the sheet downwards toward the Duplex Unit.
2. As the sheet reaches the Duplex Entrance Sensor, roller 1 turns, drawing the
media into the lower portion of the Duplex Unit
3. After the trailing edge of the media clears the Duplex Entrance Sensor, and with
the Duplex Reverse Sensor High, the Entrance Roller is reversed and the Duplex
Solenoid is activated to position the Duplex Gate to direct the inverted media into
the upper portion of the Duplex Unit.
4. The Duplex Rollers transport the media out of the Duplex Unit and into the
printer where Side 1 is printed. This portion of the duplex path is monitored by
the Front and Rear Duplex Sensors.

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