Question about Xerox Phaser 7750DN Laser Printer

1 Answer

Xerox 7750 issues

Hi,

Thanks for your response.

It doesn't appear to be the fuser. I have also checked the imaging units and transfer roller - all fairly new and no problems.

Iam printing from Tray 1 (MPT) and the marks appear as bands across thepage (a dull sheen when compared to other areas of toner - like thetoner has been squashed). I thought the marks were coming from therollers, but in measuring them they don't appear to line up to any ofthe rollers. In addition, there is sometimes black dirt marks appearingon the printed pages - which appears to be toner. I have changed theblack toner cartridge, but this failed to help.

The printer isthree years old and has only done 23k prints. The Accumulator Belt hasnot been changed in this time, however they are rated at a life span of80k prints. Do you think this could be at fault? - I have inspected itwith a torch and it does appear to have some small toner particlesattached and minor scratches. Is there a safe way to clean this part?

Other consumables -
Toner
C - 17%
M - 96%
Y - 100%
K - 100%

Imaging units -
C - 81%
M - 100%
Y - 85%
K - 89%

Transfer roller - 100%
Belt cleaner - 100%
Fuser - 76%
Waste cartridge - okay.

Thanks and regards,
Matt

Posted by on

  • Anonymous Mar 20, 2014

    I have changed fuser, all drum cartridges & waste container. there is one row of dots printing across every piece of paper that goes through it

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 2,072 Answers

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

Posted on Mar 24, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

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

8 Answers

Color Print Quality


In my experience, the fuser has always been the cause of the lines.

Jul 09, 2008 | Ricoh CL3000E Laser Printer

1 Answer

How to reset Phaser 6110 imaging unit.


No reset for imaging unit, only when you change it(autoreset).

You can reset Fuser and Transfer Roller this way:

To reset the fuser and transfer roller life usage from the printers control panel:
a. From the main menu select, Menu-Setup --> Maintenance --> Check other.
b. Select the appropriate part name from the list by using the Up Scroll and Down Scroll buttons
c. Select Reset.

May 18, 2011 | Xerox Phaser 6110 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

3 Answers

I have a 7750 xerox printer. paper keep wraping around the fuser roller and jamming. the fuser has been used for only a short time. Is this a damage unit and need to be replaced or is there something I...


Hello sir; Try to move out fuser unit, check the fingers against the fuser rollers, does it build up toner on the finger tip if it does, clean it up otherwise replace it.

Nov 06, 2009 | Xerox Phaser 7750DN 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

Repeating defects problem after all consumables


Hi thpep:
Here is a repeating defects ruler. Mach the first defect at the top of the page and alighn with this ruler and it will tell you what assembly is giving you the problem.

Repeating Defects
Routine
Maintenance Item Component Distance between Defects
Imaging Unit Developer Roller [YMCK] 28 mm (1.10 in.)
Drum [YMCK] 62 mm (2.44 in.)
Drum Charge Rollers 25 mm (1 in.)
IDT 1 (Y and M, C and K) 132 mm (5.20 in.)
IDT 2 all colors together 132 mm (5.20 in.)
Transfer Roller Transfer Roller 64 mm (2.52 in.)
Fuser Assembly Fuser Assembly 82 mm (3.23 in.)

Defects Associated with Specific Printer Components
Some print-quality problems can be associated with specific assemblies, the most
common problems and the associated assemblies are listed below. Also, refer to the
specific print-quality troubleshooting procedure for more information.
Imaging Unit
■ Streaks
■ Fine Lines
■ Banding in Process Direction
■ Uneven Density
■ Voids
■ Repeating Defects
Transfer Roller
■ Toner on the back side of the printed page (simplex mode)
■ Light Prints
■ Repeating Defects
Fuser
■ Hot or Cold Offsetting
■ Repeating Defects

Hope this helps
pdouglasss@hotmail.com

Jul 16, 2009 | Xerox Printers & Copiers

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

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

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

Not finding what you are looking for?
Xerox Phaser 7750DN Laser Printer Logo

284 people viewed this question

Ask a Question

Usually answered in minutes!

Top Xerox Printers & Copiers Experts

Whit
Whit

Level 1 Expert

185 Answers

iteminconline

Level 2 Expert

110 Answers

Philip Hughes

Level 2 Expert

63 Answers

Are you a Xerox Printer and Copier Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...