Xerox Phaser 7400 Service Manual

Print-Quality Troubleshooting 5-3
Defects Associated with Specific Printer Components
Some print-quality problems can be associated with specific assemblies, the most
common problems and the associated assemblies are listed below. Also, refer to the
printer’s Troubleshooting Print-Quality Problems pages or a specific print-quality
troubleshooting procedure for more information.
Imaging Unit
■ Streaks in Process Direction (in the direction of feed, parallel with paper travel)
■ Banding in Scan Direction (across the page, perpendicular to paper travel)
■ Uneven Density
■ Vo i d s
■ Repeating Defects
■ Mis-registration
Note
See "Cleaning the Imaging Unit Contacts" on page 7-3 for instructions on how to
clean the contacts.
Transfer Unit
■ Toner on the back side of the printed page (simplex mode)
■ Light Prints
■ Repeating Defects
■ Mis-registration - only when there is obvious damage to the belt.
Fuser
■ Hot or Cold Offsetting
■ Repeating Defects
■ Dark Streaks in Process Direction
LED Head
■ Streaks in the Process Direction
■ Uneven Density in the Scan Direction

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