Xerox Phaser 7400 Service Manual

Theory of Operation 2-33
Paper Fed from Optional Trays
The following describes the paper path as it is fed from the optional Tray 3. Trays 4
through 6 function in the same manner. Media moves along the paper path as follows:
1. Paper loaded in the tray is detected by the Paper Size Switches.
2. The tray’s Lift Motor rotates lifting the sheet to the pre-feed position detected by
the Level Sensor.
3. The Feed Motor turns (CCW) driving the Feed and Pick rollers to feed the sheet
from the tray into the Registration Roller.
4. The Feed-Out Sensor #3 detects the media as it leaves the Feed Rollers.
5. As the trailing edge of each sheet passes the Feed-Out Sensor #3, the Lift Motor
lifts the next sheet to pre-feed position.
6. The Feed Motor rotates until the leading edge is against the Registration Roller
#3 inducing a deskew buckle. Registration Sensor #3 goes High to indicate the
sheet’s position.
7. The sheet moves towards the Transfer Unit when the Registration Clutch #3 is
engaged driving the Registration Roller #3 and Transport Rollers.
8. As the sheet reaches the Registration Roller #2, it is again aligned and detected
by the Registration Sensor #2.
9. When the Registration Sensor #2 goes High, the Registration Clutch #2 is
activated to move the sheet through the Registration Roller #2 to the Registration
Roller #1.
10. As the sheet reaches the Registration Roller #1, it is detected by the Registration
Sensor #1.
11. When the Registration Sensor #1 goes High, the Registration Clutch #1 is
activated to move the sheet through the Registration Roller #1 to the Transfer
Unit.
12. The sheet is detected by the Transfer Unit Entrance Sensor and the Transfer Unit
Motor rotates to drive the sheet under the Imaging Units.

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