Question about Brother HL-3040CN Color Laser Printer w/Networking

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I have a vertical strip about 3/16" wide about 3/4" from the left side of the page that will not print in the black only. I have replaced the black toner and black drum unit, and it is still there.

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OPEN THE BACK OF THE PRINTER AND LOOK INSIDE THE FUSER, AND CHECK IF YOU HAVE 3/16" BLACK mark on the HEAT ROLLER. knowing the position of the FUSER (HOT PART); PRINT A JOB AND OPEN THE COVER BEFORE IT REACHS FUSER, IF THE 3/16" STRIP ISN'T THERE that means it really is the FUSER.

Posted on Dec 11, 2014

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Posted on Jan 02, 2017

JayBlair
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SOURCE: brother intellifax 4100 prints full page all black

Good chance the High voltage power supply is bad. Not worth repairing. A new unit costs about 259.00.

Posted on Aug 01, 2007

  • 2072 Answers

SOURCE: black mark on right side of paper

You either have some white out or some other dirt on the scanner or some sections of the scanner are bad. Open the area where your originals feed into, and look for about a 1/2 inch wide strip of glass, that is the scanner window. When that gets dirty, or fails, that causes the problem. Most likley dirty, some whiteout or ink on the scan window.

Posted on Mar 18, 2008

SOURCE: Black line on faxes

Check carefully the glass, a very small point of ink or anything else can cause the black stripe. usually  it is that the problem. use windex to clean it. 

Posted on Apr 15, 2008

  • 320 Answers

SOURCE: 1/8" wide black line down center of faxes; possible to eliminate?

you need to replace the fuser roller in the fuser.

Posted on Jan 16, 2009

  • 215 Answers

SOURCE: Black strip 1.5 inches wide on right side of page

first, take drum unit out and make sure the blueish-purple colored plastic tab on top of drum is all the way to the left side. if thats not the culprit, then you are most likely looking at a bad contact image sensor or CIS.

hth,
ray

Posted on Apr 06, 2009

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1 Answer

I have a vertical strip about 3/16" wide about 3/4" from the left side of the page that will not print in the black only. I have replaced the black toner and black drum unit, and it is still there.


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