Xerox Phaser 7400 Service Manual

xx Phaser 7400 Color Printer Service Manual
Inoperable Printer Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Engine Power-Up Sequence (BIST) . . . . . . . . . . . . . . . . . . . . . . 4-12
Printer Continually Displays Warming Up.... . . . . . . . . . . . . . . . 4-13
Printer Displays Install or Reseat Imaging Unit . . . . . . . . . . . . . 4-13
Printer Displays Reseat Contoller Board . . . . . . . . . . . . . . . . . . 4-13
Printer Does Not Come to a Ready State . . . . . . . . . . . . . . . . . . 4-14
Paper Size Switch Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
AC Power Supply Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
DC Power Supply Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
RAM Memory Fault Isolation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Media Jams and the Paper Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
Operating System and Application Problems . . . . . . . . . . . . . . . . . . . . 4-21
Macintosh Printing Problems . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
Windows Printing Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
Network Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24
Network Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24
Network Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
USB Port Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27
5 Print-Quality Troubleshooting
Print-Quality Problems Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Defects Associated with Specific Printer Components. . . . . . . . . 5-3
Test Prints. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Analyzing the 100% Solid Fill Pages . . . . . . . . . . . . . . . . . . . . . . 5-4
Analyzing the Color Test Pages . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Analyzing the PS Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Analyzing the Color Step Pages . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Print-Quality Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Light Prints in All Colors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Light Print in Only One Color . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Blank Prints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
Mottled or Splotchy Prints. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
Unexpected Colors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
Repeating Bands, Lines, Marks, or Spots . . . . . . . . . . . . . . . . . 5-18
Random Bands, Lines, Marks, or Missing Spots . . . . . . . . . . . . 5-19
Random Spots. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21
Background Contamination . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23
Residual Image, Ghosting or Hot Offset. . . . . . . . . . . . . . . . . . . 5-25
Incomplete Fusing or Cold Offset. . . . . . . . . . . . . . . . . . . . . . . . 5-27
Mis-Registration, Color Layers Not Correctly Registered. . . . . . 5-28
Toner on Back of Print. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31
Image Not Centered or Positioned Correctly . . . . . . . . . . . . . . . 5-32
Process Direction Bands, Voids, or Streaks. . . . . . . . . . . . . . . . 5-34
Scan Direction Bands, Voids, or Streaks . . . . . . . . . . . . . . . . . . 5-35
Scan Direction Dark Streaks . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-37
Process Direction Bands, Voids, or Streaks. . . . . . . . . . . . . . . . 5-38

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