Question about Xerox Phaser 7750DN Laser Printer

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Xerox Phaser 7750 - Tray 1 streaks on prints

I have a Xerox Phaser 7750 that is printing fine except through Tray 1/bypass. When printing heavy stock there are blue toner streaks (about 1/4" wide) across the center portion of the paper. I checked the blue drum and it looks OK. Paper through Tray 2 is OK. Tray 3 paper runs through in the same direction as Tray 1, and it's clear. I've tried different media settings and Tray 1 is the issue. Problem comes and goes, so I can get 10 clear prints, then dirty. I've cleaned rollers - not resolving. Any suggestions?

Posted by christine533 on

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M Birdsell

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  • 11 Answers

If you put Tray 2 in Tray 1's spot with the heavy stock in Tray 1 (now in tray 2's spot) and print from it, does the problem persist?

This may help...
http://www.support.xerox.com/support/phaser-7500/support/enus.html?objGUID=4538

Posted on May 17, 2017

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5 Related Answers

Anonymous

  • 18 Answers

SOURCE: Xerox phaser 7760 streaking

to fined out what the problem could be you need to open a word doc and sent a blank page to the printer. from this it will show where the problem is in the printer
if u still get streaking it couls be a faulty toner and it may not be the cyan toner either. i would give the fuser unit in the printer a check. if there marks on tthis unit i can cause this problem as well

Posted on Nov 23, 2007

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Rick Kasper

  • 2072 Answers

SOURCE: Xerox 7750

In what direction is the mark? Is the defect a dent in the paper,that repeats or is it a crease in the direction of the paper feed? If it is a dent that is repeating, the cause would be the transfix roller. If it is in the direction of paper feed, there may not be much you can do, most of those ceases you can see when held sideways like that come from the rollers edges. Just the normal crease that can be created by the end of the roller.
You can open the covers on the machine and make sure there is no excessive buildup of ink on any of the rollers. It is possible there is to much pressure on one of them, but with certain types of paper, there may not be much you can do. I will research it more and get back with you on that issue.
One thing you can try, (because your marks can be comming from a defective fuser), set the machine to print 4 or 5 pages, then shut it off or unplug the printer in mid run. Carefully look at the jammed pages to and see where in the process the crease is comming from. Take note and let me know please.
The gray haze seems to also indicate a possible fuser issue, but moreso, it sounds like the black housing is over toned. Most likely cause of that is a bad housing or bad developer. The developer in that machine will become worn and need replacing. It will restore the contrast and should resolve background issues.

Posted on Mar 11, 2008

Rick Kasper

  • 2072 Answers

SOURCE: Xerox Phaser 6250DP sensor not cleaning

Is there a specific code coming up? That can make it easier to pinpoint the exact problem.

Posted on Apr 21, 2008

yalmer

Hjalmer Lamminen

  • 552 Answers

SOURCE: Xerox phaser 7750 error code

Click on this link at xerox.

Posted on Apr 22, 2008

SOURCE: hi i got xerox phaser 7750 and i have error code

Cheap fix : reset the Developer Life Count in the Service
Tools menu. Hold down the back ARROW key with the "i" them with your other hand turn on the machine.


Expensive fix : What has happen is that the developers have come to the end of the life and once it gets to a certain page count it will print out no more until you have replace the developers. One thing xerox forgot to do is reset the engine control board too for this machine. So you might need a new engine cotrol board too.
Procedure

1. Replace the Developer
2. After the Developer has been replaced, reset the Developer Life Count in the Service
Tools menu.
NOTE: It is recommended that all the Developers and Beads be replaced at one time rather
than on sccessive visits.

Good luck.




Posted on Oct 29, 2009

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1 Answer

How to clean phaser 7750


Included general maintenance video and how to clear smears from the paper.

Solution: Remove Print Smears / Printing Fuser Cleaning Pages
7750 Support Knowledge Base Remove Print Smears Fuser Cleaning...

With Troublshooting highlighted on the printer display perform the following steps:
  1. Press OK.
  2. Press the Down Arrow and scroll to Print Quality Problems.
  3. Press OK.
  4. Press the Down Arrow and scroll to Remove Print Smears.
  5. Press OK. The printer will print 5 cleaning pages.
Repeat this process five or six times, to remove stubborn toner buildup from the fuser.
Always make sure you are matching the type of paper loaded in the printer tray(s) to the correct Paper Type front panel setting. When you load a tray with paper, the front panel will ask you to indicate the type of paper you loaded. For correct print quality and printer operation, be sure to set this correctly.
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Dust, dirt, toner, in paper path, clean. -Carl

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Phaser 7750 Not Printing, No Error codes, Fuser Wont Warm Up, Wont Detect Open Trays or Doors


It sounds like one of the cover or tray sensors is not working correctly. Check the actuator on the fuser cover, sometimes these break off so the printer thinks the cover is still open. If that seems ok and you have a lower tray deck unplug it to eliminate them as the cause.

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I have xerox phaser 7750 by mistake i bought 7760 yellow toner shall install it to 7750


Not yet, check with the supplier and ask if it is compatible with the 7750, if not then exchange the 7760 for a 7750 yellow toner cartridge. Once you open the cartridge the supplier will not exchange.

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How do you reset toner counter on phaser 7750? Thanks


On the back of the 7750 toner there is a metal piece you can push in near the end that goes in to the machine first, this will tell the printer that the toner you put in has not been installed until now. I would not suggest doing this unless the toner is full and is using geniune xerox 7750 toner.. If you refill it with generic or non-7750 toner it can damage the machine and will void any warrenty you may have left on the machine.
If you switch machines with the 7750 toner the machine will not know how much toner is remaining in that toner. Xerox changed this method on the 7760 to use a toner chip to fix this.
Hope this helps, thanks

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You need to check with Xerox , ther is some toner that was manufactured last year (2008) that was defective

the phone number for xerox support is 503-682-7377

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