Question about Lexmark C748de - Printer - Color - Laser
Black smudges on edges of pages
Posted by Anonymous on
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Posted on Jan 02, 2017
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
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
Your problem is caused by 2 worn photoconductor units. If you open the front door like you are changing toner, the photoconductor units will be mounted to the door that swings down. You will see should see four units one for each color, red, blue, yellow and black. If you look at the red and black units the ends will look different than the blue and yellow. The photo units have teflon coating that wears off and causes your proble. The replacement part number is C53030x and you will need 2 of them. Just replace the red and black ones and your printer will be back to normal. If you can't locate them locally, let me know and we can ship them to you.
Over 21 year of PC and printer support/service
Posted on Jun 19, 2009
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