Question about Brother Multi-Function Center MFC-240C All-In-One InkJet Printer

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Brother MFC-6800 - Mysterious Vertical Lines

I have a Brother MFC-6800 and I had a similar problem. Fax and most printing were clean, but copying and printing files in Adobe from one particular site produced mysterious vertical lines. I changed the drum and the problem seemed solved. However, just recently I was copying pages from a magazine and the first one came out clean, but the rest had many vertical lines on the copies. When I tried again later, copying various things, sometimes I got clean copies, sometimes lines. I am baffled. My toner is genuine Brother, as is the replacement drum.

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This unit has a brom tube unit and need to be replacement . By repair tec.

Posted on Oct 05, 2009

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Posted on Jan 02, 2017

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Brother MFC-9840 poor print quality.


Hello you can try and fix your problem using the steps suggested below. You may need to clean the corona wire

1. Lookat the corona wire on each toner cartridge. If a corona wire is dirty that maybe the reason that you receive black lines on the pages.Do you have trouble when you receive a fax? If that is the problem look what is cousing it below:
1 Ifyou receive black lines while receiving a fax, the cause of that problem may bedirt in the fax which is sending you the information to you. Advice your senderto clean its fax or to replace the toner cartridge with new.
I hope this can be of any help to you.

May 09, 2012 | Brother MFC-9840CDW Laser Printer

1 Answer

B&w 6800 lots of horizontal black line areas. also, a vertical white strip about 3/4 inch wide about 3 inches from left side of paper


Hi!

the best thing is to make a copy using the glass and not the document feeder!If there is no lines on the copy simply lift up the cover and on the left side of the glass will be a thin strip of glass,Clean it with a dampened cloth and all line and marks should be gone1

Good Luck!

Apr 02, 2011 | Brother MFC 6800 All-In-One Laser Printer

1 Answer

Brother MFC-6800 1. Prints with 3/8" blank vertical line down the entire page; 2. Prints with a couple of 1/16" blank vertical lines down the entire page; 3. Prints with some gray shadow...


This solution is unconventional but it worked for me. The black roller on my MFC had irregularities on it and was creating horrible printouts. I pulled out the drum and cartridge and cleaned the large black roller. I used furniture polish to make the roller very smooth. Now it prints really nice.

Nov 29, 2010 | Brother MFC 6800 All-In-One Laser Printer

2 Answers

Brother MFC 8220 all-in-one fax prints with a vertical line


First guess is you have a bit of dirt (often white-out from people scanning corrected paper that's not quite dry) stuck on the fax scan window. This should be described pretty well in your user manual (which you can download online from brother.com).

Its also possible that there is dirt (typically loose toner) on the laser scan window (there's a laser that shines through it to get the image pattern on the drum). That window is often along the bottom of the unit under the drum/cartridge (take the cartridge out and look). The Brother manual I've seen seems to ignore this possibility.

Print streaks DO NOT mean cartridge drum replacement in many cases !! On brother Intellifax or MFC or other laser copier/printer/fax, keep in mind that either the fax/copy scan window OR the laser scan window can get dirty. If the fax scan window is dirty, you see streaks on outgoing faxes and copies (but NOT incoming faxes). If the laser scan window is dirty, you see streaks on all prints (copies, faxes, print-from-computer).

Note also that when transporting/moving some laser copier with the toner cartridge inside, the toner can get out and make a big mess inside (including getting the laser scan window dirty). An air compressor can be usefull to blow it out. And sometimes using alcohol to clean is a BAD idea (maybe incompatible with plastic and rubber parts). A damp rag is probably fine.

Nov 21, 2009 | Brother Office Equipment & Supplies

1 Answer

Black lines or smudge marks\running down the prints


Hello sir;The streak line from printing also should be from copy, because the line come from imaging unit, check the meter count if close to or over 50,000 then replace drum and drum blade, it will take care the problem.
The brother printer you need to replace imaging unit( drum unit).

Jun 01, 2009 | Brother Office Equipment & Supplies

1 Answer

Vertical lines when it prints, etc.


Vertical print problems are going to mean a drum replacement on that model. You can try to pull out the drum unit and carefully, with a lint free cloth, try spinning the drum and cleaning it off, but more than likely the coating on the drum has worn off where the vertical defect is. New part # dr-250 for that machine model..

Feb 28, 2009 | Brother MFC 6800 All-In-One Laser Printer

1 Answer

My fax Machine has lines going each page that prints out


Get a can of air, open the unit and blow it out.
Also, clean the glass.
That should help solve the problem

Jan 08, 2009 | Brother MFC 4800 All-In-One Laser Printer

1 Answer

Vertical lines on photocopies/faxes


The MFC-7420 Manual recommends cleaning the scanner glass and white plastic bar above it with isopropyl alcohol. Page 11-22 has a diagram.

I am having a similar problem but cleaning it did not work. But try that first.

Oct 15, 2008 | Brother MFC 7420 All-In-One Laser Printer

1 Answer

Vertical lines


1st print a report, can you see the lines? Then either the drum is faulty or the laser scanner is. If the lines are not present when printing a report, make a copy and see then if the lines appear. If so, the scanner is faulty. Try cleaning the glass with glass cleaner. However, blank lines mean that bits are missing from the scanner itself and the scanner will need to be replaced.

Feb 27, 2008 | Brother IntelliFax-2820 Laser Fax

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