Question about Brother MFC 7420 All-In-One Laser Printer

1 Answer

Black line down the paper on copy mode. Ok in print mode.

There is a BOLD Black line down the paper on copy mode. Ok in print mode. Prints fine. Have replaced the drum and still get the black line. What's up?

Posted by on

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 37 Answers

There is most likely something on your scan glass that is blocking the scanner. Clean of both pieces of glass that are there when you flip open the ADF, or top cover. Try to copy again. If it is still there then there is either something on the scanner piece that moves back and forth to scan or one of your scan LEDs is burnt out and the scanner will have to be replaced.

Posted on Dec 17, 2008

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

My printer is printing black horizontal lines down the right side of the paper - what is wrong?


Needs Drum If you pull the drum unit out you will see on the drum different shades of color lighter is wear the lines come from. Buy a rebuilt drum much cheaper and they work, may have to reset the drum count if the change drum lite on...

May 02, 2014 | Brother MFC-8460N All-In-One Printer

1 Answer

Printing is fine, but suddenly when I copy a document it prints a bold black line down the page


Try re-installing printer software or setting your printer to default settings

Jun 09, 2010 | Office Equipment & Supplies

1 Answer

HP Photosmart C3180 prints a solid black line left side of paper ONLY when you COPY. When you print from computer, it prints just fine. It is only from COPY mode that the solid black line appears.Already...


Unfortunately, your C3180 printer needs some repairs done to it or you . A section of the printing arm that does the printing is faulty. This happened to me and apart from replacing the arm (at considerable cost) I purchased a new printer at a much cheaper cost. You can use your faulty printer for printing from the computer but not for copying or scanning. MG

Jun 08, 2009 | HP Photosmart C3180 All-In-One InkJet...

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

Bold black lines across the paper when printing,scan or copy not on faxing


I realise this is probably too late for you Janet and you will have bought a new drum unit by now or replaced the printer! The three lines appeared on my print-out from a new drum I installed and after investigation it transpired that there was some toner residue that had dried on the drum (from testing at manufacture stage probably) and reprinted three bold lines on a sheet of A4. The solution is to use a soft piece of cloth and rub the lines off the drum through the gap at the front of the drum unit. The drum can be rotated by turning the gear cog on the side, then once the reside has been removed from the drum and it is clean, the lines will have disappeared. I wouldn't use any solution on the drum, just gentle rubbing should suffice.

Apr 13, 2009 | Brother MFC 9180 All-In-One Laser Printer

1 Answer

Black line when making copies


A line down a paper on either a printer or scanner is classic sign of scratched drum. The certainty of it is in the fact the line is at the same place each time. Drum needs to be replaced.

Don't forget to 4 star this solution.

Jan 15, 2009 | HP LaserJet 2840 Printer

1 Answer

Xerox xe80 workcentre prints almost black copies


Hello sir; Just replace drum cartridge, it will take care your problem. GOOD LUCK!

Oct 31, 2008 | Xerox WorkCentre XD125F All-In-One Laser...

2 Answers

Xerox xc1020


is it a printer/copier?
yes....do both prints and copies off the glass come out black?
yes...probably a problem in the drum/ CRU area
No- prints OK but copies black lift the lid and watch the exposure lamp...does it light up? does it move? Both of these scenarios would usually bring up a fault code, so I would still be inclined towards the drum unit.Pull the unit out and make sure no paper has sneaked up between the drum and the exposure slot, or even into the drum unit. another cause could be a broken corotron wire (very thin wire close to the drum usually behind a grid (charge grid) If it is a customer replacement drum unit (CRU) the charge grid will be built into the unit and will require the whole thing replacing.......

Dec 27, 2007 | Xerox CopyCentre C20 Black and White...

Not finding what you are looking for?
Brother MFC 7420 All-In-One Laser Printer Logo

1,683 people viewed this question

Ask a Question

Usually answered in minutes!

Top Brother Office Equipment & Supplies Experts

James Cagle
James Cagle

Level 2 Expert

478 Answers

Samyfam
Samyfam

Level 3 Expert

379 Answers

Victorman
Victorman

Level 3 Expert

840 Answers

Are you a Brother Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...