Xerox Phaser 7400 Service Manual

Theory of Operation 2-59
LVPS
Supplies AC power from the power source to the Fuser heater. Generates and supplies
stable low-voltage DC power (+5 VDC, and +24 VDC) to be used for the logic and
other circuits within the printer. The LVPS includes the LVPS Board with attached
Power Switch, the AC Harness, a Fan, and the box enclosure.
Front Sensor Board
Located under the Registration Roller #1, the Front Sensor Board communicates with
the Motor Driver Board and connects to these components:
■ Media Thickness Sensor
■ Registration Clutch #1
■ Temperature/Humidity Sensor
■ Tray 1 (MPT) Home Position Sensor
■ OHP (Transparency) Sensor
■ Tray 1 (MPT) Level Sensor
■ Tray 1 (MPT) No Paper Sensor
Mounted directly on the board are the Registration Sensor #1 and Transfer Unit
Entrance Sensor.
Rear Sensor Board
Located behind the Rear Sensor Board Cover on the Exit Assembly, the Rear Sensor
Board communicates with the Engine Control Board and connects to these
components:
■ Fuser Exit Sensor
■ Full Stack Sensors for Top and Side Output Trays
■ Job Offset Position Sensor
LVPS Outputs
Output Voltage Purpose
+5 V (1) Engine Control Board power
+5 V (2) LED Head power
+5 V (3) Image Processor Board power
+24 V For motor, clutch, and solenoid drive

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