Question about Lexmark C540N PROD SPECS TBD Printer

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Lexmark c540n leaving black marks on paper

My Lexmark c540n printer is leaving 3 black smudges down the left hand side of the paper - I was told it was a faulty toner but I have changed it and it is still doing it. Any ideas why please???

Posted by Anonymous on


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Posted on Jan 02, 2017

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SOURCE: Paper has black marks only on the edge

hello, it sound like you might have whats called a black spot on the image drum, try print a few blank pages and see if it starts to clear up for you.

Posted on Feb 19, 2008

  • 2072 Answers

SOURCE: Paper has black marks only on the edge

There are several issues that will cause a problem like that.
1, As X box mentioned is a problem with the drum. That is part of what is called the print cartridge or imaging unit. There is most likely a shutter or opening in the cartridge which you can shine a flash light at and see if the defect is visible. If so you will have to replace that cartridge. I would suspect that is the most likely issue.
2. There may be something in the paper path. A small piece of paper riped off in it, something else, a piece of tape, label, etc may have made it into the machine, that will make contact with the paper and smear the image.
3. Lastly, your fuser roller may be bad causing the reprint.
How to determine where the issue is, shut the machine off while it is printing and jam the paper in the image area. See if the defect is on the paper before the fuser. Eliminates the fuser ....

Posted on Feb 19, 2008

  • 25 Answers

SOURCE: Lexmark E232

If this model has separate toner and photoconductor then the photoconductor is at end of life and needs to be replaced. Follow the directions that come in the new photoconductor package to install and reset the PC count this is important.


Posted on Mar 11, 2008

  • 2 Answers

SOURCE: Pringed Pages are coming out with yellow and blue smudges on edge

I have also had this problem which I solved by changing the photoconductors of the colours shown.
you can try this.I am not sure if that is the best solution but it solved my problem

Posted on Jun 18, 2009

  • 1684 Answers

SOURCE: Printer making marks down the left hand side of every page


This sounds like the photoconductor units for both black and blue need to e replaced. Open the front of the printer like you are changing toner cartridges. On the front door parts that opens to you there will e four pieces, 1 for each color. Look at the one with blue on it and the one with black and look on the ends of these, they are the photoconductor units. I bet both of the colors have worn sections compared tothe magenta and yellow ones. The replacement part number is C53030X and you will need 2 of these. They have a life span just like toner and have to be replaced too.

I hope this helps,

Corporate Computer
Over 21 years of PC and printer support/repair

Posted on Jun 18, 2009

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