Xerox Phaser 7400 Service Manual

Print-Quality Troubleshooting 5-31
Toner on Back of Print
There is toner on the back of the printed sheet of paper.
Troubleshooting Reference Table
Applicable Parts Example Print
■ Imaging Unit
■ Transfer Unit
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1
Check and clean the Exit Rollers and
paper path for toner or debris.
Does this correct the problem?
Complete. Go to Step 2.
2
Verify the printer is operating within
it’s environmental specifications.
Go to Step 3. Advise customer on the
specifications.
3
Inspect the Transfer Unit.
Has the cleaning blade flipped or
failing to clean the Transfer Unit?
Replace the Transfer
Unit.
Go to Step 4.
4
Run the Remove Print Smears
routine.
Did this correct the problem?
Complete. Go to Step 5.
5
Select the “Special” media setting
and experiment with alternate
settings, such as the next heaviest or
lightest paper type.
Does this correct the problem?
Complete. Go to Step 6.
6
Test the Fuser.
Print a test print and monitor the
Fuser temperatures.
Are temperatures within
specifications.
Replace Engine
Control Board
(
page 8-112).
Replace the Fuser.
s7400-325

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