Question about Xerox Phaser 7300DN Laser Printer

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Horz. streak approx.3/4 down on each page I print

The streak is always in same place. Looks like a light streak put streak color is like a real light magenta color. When I go to the menu on printer and check magenta toner life it says it's low but normally when I have to replace it I get a message saying too so I don't think that's the problem. The magenta imaging unit says it's ok too. Transfer and fuser life says ok too. Any ideas?

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Sounds like some of the magenta toner is left behind on the drum. The only way to fix it is to get a new cartridge.

Posted on Dec 09, 2008

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I am having a very similar problem, except with black instead of magenta, and mine is a phaser 7760. The line is perpendicular to the direction of paper travel right? Have you had any luck solving this? Thanks.

Posted on Jun 05, 2013

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From the service manual:

Dark Streaks in a Single Color or All Colors in the
Direction of Paper Travel
.There are dark lines running along the page in
the direction of paper travel from the leading
edge to the trailing edge
This is generally due to fuser, paper path roller
and/or exit guides contaminated with toner
debris.
.
Troubleshooting Procedure
Step Check Yes No
1 Run the Remove Print Smears routine from the
printers front panel.
Did this fix the problem?
Complete Go to step [2].
2 Are there any obstructions, dirt or debris in the
printer’s paper path.
Check for toner spills inside the printer.
Clean and
remove
obstructions.
Go to step [3].
3 Visual inspect the Imaging Units and rollers for
signs of damage.
Note: Exposure to light can damage the
Imaging Unit, examine the unit quickly
and out of direct sunlight.
Replace the
defective
Imaging Unit.
Go to step [4].
4 Check the Fuser where paper enters for spilled
toner or contamination.
Clean if dirty. Did this fix the problem?
Complete Go to step [5].
5 Verify the ribbon cables and wiring harnesses
on the LED Heads are seated, connected and
routed properly.
Go to step [6]. Reseat, reroute
or replace any
damaged wiring
harnesses.
6 Generate a service test print pattern from within
service diagnostics. This will test the Engine
Controller Board.
Did the test pattern print correctly?
Replace the
Image Processor
Board.
Replace Engine
Controller
Board.

Posted on Dec 09, 2008

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