Question about Brother MFC-7820N Printer

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Scanner Hi: I have an Brother 7820N, and I am having problems with the scanner, everytime I scann a document, does it but with a black line in the midle of the document,How Can I resolve this problem? Thanks

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  • Brother Master
  • 1,113 Answers

Check smaller slit glass panel near copy top glass (open lid on left for liquid paper / dirt.

Posted on Oct 31, 2007

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I have Brother MFC 7820N when I send a fax the pages been received has a black vertical line in the middle of the page. If you could tell me please what kind of maintenance i have to do to eliminate this...


Most likely the cause is something stuck to your ADF scanner glass but let's do a few tests first.
Make a COPY with your machine using the document feeder. Now make a copy of the same document by laying the document down on the glass. One or both of these copies should have the black line. If they do not then there is nothing wrong with your machine. If the copy made from the Document Feeder has the line but the copy made from the Glass does not then the trouble is with your ADF scanner glass which is quite common. Just look to the left of your large main glass. You should see a thin strip of glass runing front front to rear. This is your ADF scanner glass. On some models this glass is contained inside the ADF feed unit. Just cleaned the glass thoroughly with a soft cloth and some glass cleaner.
Now if by chance you get the same line from both then you may have debris on the scanner mirrors. The scanner unit that travels back and forth under the glass would need to be cleaned if this is the case. The glass would need to be removed and then you can clean the small mirrors in the scanner using cotton tip swabs.
Most likely tho it is just the ADF scanner glass. This is true because this glass has documents traveling over it and sometimes specks of dirt, whiteout or other materials get deposited on it.
Good Luck and Thank You for using Fixya.
WheatlandServices

Dec 21, 2010 | Brother MFC-7820N Printer

2 Answers

Black lines down on printed page


This is caused by dirt/debrise on the ADF (automatic document feeder) scanner glass. You need to open up the feeder where your originals are fed in and look for a strip of glass that runs from front to back. It is about an inch or so wide. You need to clean this glass to get rid of the lines. Some models have this glass just to the left of the large main glass, but in your case I beleive it is in the feeder itself.
Good Luck.

Apr 23, 2010 | Brother MFC-7820N Printer

2 Answers

Brother MFC-7820N Printer--vertical lines


You need to clean the scanner glass. Also known as the strip glass. It is a 1 inch wide strip of glass that runs from the front to the back. Your documents pass over this glass when they are scanned. Some of the wax crayon probably smeared off onto the glass and now when you scan the scanner sees these marks as stationary and thus records them as solid lines. Just look into the scanner section where your documents are fed in or depending on model, some are just to the left of the large original glass.
Good Luck and thank you for using Fixya.

Feb 25, 2010 | Brother MFC-7820N Printer

1 Answer

Brother 7820N has black vertical line when using ADF


It's the same scanner ccd, after you make sure the narrow scanner window is clean, you need to power down the machine and power up again so it will calibrate to a clean window, if it has a scratch like from a staple, you will need a new glass.

Jan 18, 2010 | Brother MFC-7820N Printer

3 Answers

When using the ADF for scanning to pdf, it creates black lines vertically down the left side of the document. If I use the flatbed scanner, no lines.


Hi,
Your machine ADF is dirty or dust in adf glass please clean it by soft cloth and scane again its clear and sharp.
thanks.

Nov 24, 2009 | Brother MFC-7820N Printer

2 Answers

Line down the middle of page only when I use the feed table. If I print from glass, there is no line. Suggestions?


ROLLERS HAVE TO BE CLEANED. USE DE-NATURED ALCOHOL (EVAPORATES QUICKLY WITH NO RESIDUE) THIS SHOULD SOLVE THE PROBLEM

Mar 16, 2009 | Brother MFC-7820N Laser Printer

1 Answer

Mfc 465cn has black line


Open the document feeder and clean the scanner glass.

Feb 12, 2009 | Brother MFC-465CN InkJet Printer

5 Answers

Stripe on receiving fax Brother MFC 7820N


I had the same problem, and I just fixed it.  It was a tiny little black dot which was stuck to the glass where the document feeder passes the paper to.  First you need to figure out where the line is on paper with respect to the paper, and just carefully run your finger on the glass to see if there is something on the glass.  I removed it, cleaned the glass, and anything which I run through the document feeder is now fine.  Hope this helps.

Aug 15, 2008 | Brother MFC-7820N Printer

4 Answers

Print Problem - vertical lines


If the problem only occurs when using the document feeder, the problem is not usually caused by the drum. When using the document feeder, try to notice where the scanner (the light assembly under your scan glass)stops just before the paper is being fed. Some multifunction machines have a small piece of glass that is separate from the large scan glass and the scanner assembly stays parked underneith it as the original is being fed over it. Most likely there is something on the glass where the scanner parks as originals are being fed thru the feeder. When putting your original on the large scan glass to copy, the mark on the glass will only show as a spot, but will show as a vertical line thru the whole copy when using the feeder.

Feb 23, 2007 | Brother MFC-7820N Laser Printer

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