Xerox Phaser 7400 Service Manual

2-4 Phaser 7400 Color Printer Service Manual
LED Heads
The LED Heads receive signals from the Engine Control Board and scan the surface
of the four Imaging Unit drums to create a latent image. The resolution is either
600
dpi or 1200 dpi and is determined by the customer setting.
Fuser
The Fuser, using a combination of heat and pressure, bonds the toner to the paper. The
Fuser is replaced as a unit. The Heat Roller is heated by two internal halogen lamps,
and the Pressure Roller is heated by a separate lamp. The Pressure Roller puts
pressure against Fuser Belt, media, and Heat Roller to melt the toner and bond the
image to the paper. After the toner image is fused to the paper, the paper passes
through the Fuser Exit Sensor indicating the sheet’s progress. To better understand
Fuser errors, Fuser components are described in the following table.
Fuser Components
Component Function
Heat Roller The Heat Roller is a metal tube with a coated surface and a
Heater Assembly inside. As paper passes between the Heat
Roller and Pressure Roller, the heat fuses the toner to the paper.
Pressure Roller The Pressure Roller is a metal shaft coated with sponge rubber.
The Pressure Roller maintains pressure on the paper passing
between it and the Heat Roller. This pressure bonds the melted
toner to the paper.
Heater Lamps The Heater Lamps are quartz glass tubes containing heater
coils. The Heater Lamps heat the Heat Roller.
Light Cover
LED Head
s7400-385 LED Holders

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