Question about Xerox Phaser 7750DN Laser Printer

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Fuser units do I need "all" imaging units just to print "black" on a xerox 7750

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Yes, they all mix to make all colors even black

Posted on Feb 17, 2009

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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.
MAINTENANCE:
Phaser 7750 Video Instruction Maintenance for the Printer Phaser

Apr 23, 2014 | Xerox Phaser 8550/SDP Color Laser Printer

1 Answer

Xerox 6350 prints to much magenta


is it also when you print blank pages after the 25-50 pages? if so it could be the fuser, if not it could be the imaging unit. Check your magenta imaging unit and fuser roller anyway. If any of them is dirty, replace them.

Dec 02, 2013 | Xerox Phaser 6350/YDT Laser Printer

1 Answer

Xerox Phaser 7750 The printer's black fades print after print and totally vanishes. I tried replacing Imaging Unit, Toner, cleaning by wand, etc.


If it is only happening in black then it has to be something prior to the toner reaching the transfer belt; such as toner, developer, imaging unit, or laser. It sounds like you've already cleaned the laser window, replaced the toner, and image unit, so I would inspect the developer. Remove the black image unit and use a flashlight to inspect how well toner is covering the magnetic roller on the developer. You may want to compare it to a developer of a working color to see if they look similar. Also, make sure there are no foreign objects near where the image units go. If an object came loose in there, the arm will not close correctly which could cause the image unit to not make contact with the developer. Hope this helps, and thanks for using Fixya.

Sep 17, 2011 | Xerox Phaser 7750GX Laser Printer

1 Answer

The black print jobs have a shadow about 3 inches down the page


I had replaced the fuser - no improvement. I removed the fuser, imaging unit & transfer roller. CAREFULLY using a vacuum cleaner I cleaned all units and the internals of the printer, rotating the roller on the imaging unit to clean all parts. (Warning Place Imaging unit on paper as toner escapes) After a few test prints the page cleared and duplicate ghosting cleared.

Apr 07, 2010 | Xerox Phaser 6360 Laser Printer

4 Answers

I have a xerox 7750, error code 9-913


This problem occurs when you buy the wrong image unit.
The contact chip that is located at the bottom of the orange plastic is not for the machine. Replace it with 7750 image unit and that should fix your problem. Black is fault 9-910 cyan fault : 9-911 magenta fault: 9-912 yellor 9-913.

Sep 24, 2009 | Xerox Phaser 7750DN Laser Printer

1 Answer

Grainy image quality on my Phaser 7750


Try something, Send a job with 5 pages to it.
Shut the machine off as a page it halfway out of the exit area.. Open the machine and look at the jammed copies. Are they clear in the imaging unit areas but not upon exiting the machine?
If the image is clear around the drums and imaging unit, then the problem would be in the fuser. If the image is grainy and fuzzy in the image area, You could have a bad second BTR roller, the soft black roller on the left side door. One of the developer housings could be bad. You have to remove the imaging units and look in the opening with a flashlight to see if the developer housing brush is thick on the developer roll.
Could have a bad transfer belt or one of the color housings could be bad.
Less likely is a bad laser. But have you taken the wand that is on the front cover and cleaned the laser exposure slots?

May 14, 2009 | Xerox Phaser 7750DN Laser Printer

3 Answers

Print quality problems after installing imaging unit.


Put the old image unit back in, if it prints normaly then you might have bought a defective image unit.

Apr 16, 2009 | Xerox Phaser 7750GX Laser Printer

1 Answer

Xerox Phaser 6250 started printing bad


That really sounds like the imaging unit cleaner has an issue.
If you have one try the imaging unit, I really suspect that is your problem.
Black is Faded or Missing Step 1 Clean the Laser Windows and Remove Excess Toner From the Imaging Unit Step 2 Check or Replace the Imaging Unit Gear Retaining Pin Step 3 Replace the Imaging Unit (installation instructions) ic-film.gif
See if this link works. Xerox is infameous for these not working.
http://office.support.xerox.com/SRVS/CGI-BIN/WEBCGI.cgi/,/?St=842,E=0000000000019251353,K=6024,Sxi=13,Case=obj(19377)

Apr 08, 2008 | Xerox Phaser 6250DP Laser Printer

1 Answer

Xerox 7750 issues


Did I not erspond to this ? Seems like i had but getting this question back. Let me know please.

Mar 12, 2008 | Xerox Phaser 7750DN Laser Printer

2 Answers

Xerox Phaser 6250


How Brave is Jan?

Doubt it be the fuser(100 000life), "just magenta dots".... fuser would be "all smudged" or "black marks" , "the print rubs off" , "paper is creasing or jamming"

Can prove it by stopping a print (open door) when paper is1/2 way threw machine, you need to stop it before it goes threw the hot bit, so you can tell if the hot bit (fuser) puts the marks on the paper.

Transfer roller one would expect to effect whole print Smudged/Faint,uneven density

It will be the imaging unit ( 30 000 pagelife Ouch$ ) or possible leaking toner (if aftermarket)

Remove imaging unit and inspect film you should find image of lines, dots are usually chips or sticky stuff on drum surface, carefull no oily human fingers on surface please.

When stopping machine mid print and perfecting your timing, pull out the imaging unit and look at replica of your print notice if marked and where.

Hope this helps



Nov 19, 2007 | Xerox Phaser 6250 Laser Printer

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