Question about Brother MFC 7840W Printer

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I have a Brother MFC7840W that is ghost printing ( a faint duplicate print), I have already replaced the drum, any suggestions?

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6 Suggested Answers

  • 2 Answers

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Posted on Jan 02, 2017

  • 1113 Answers

SOURCE: Replaced both toner and drum- prints too light

remove drom and toner, in base of machine is a glass slit, clean it.

Posted on Dec 16, 2007

  • 4 Answers

SOURCE: poor print quality like toner low, but toner quanity is fine.

i had the same problem on one mf changed drum and toner twice as i'm a brother re-seller
at the end had to call brother italy where i live made some tests but at the end they will change the mf with a new one as i sold it less than a year ago so i'm in time to ask the warranty
the mf had 12k copies by the way, way to much for the printer that is

Posted on Oct 18, 2008

  • 56 Answers

SOURCE: ghost printing

This machine needs a new fuser. That is a common issue.

Posted on Jan 15, 2009

  • 526 Answers

SOURCE: Brother MFC-8840D ghost image

most likely you have a bad drum. it can also be the fuser.
what is the distance between the first word and the duplicate that follows it.

Posted on Apr 21, 2009

  • 35 Answers

SOURCE: My Brother MFC-8460N is ghosting when printing or copying.

I would contact brother directly they can guide you thru some of their codes to put in the printer and it can tell them whats going on with it. If they ask how old it is just say you purchased it 6 months ago or if it is newer just let them know.the warranty period is one year and they can replace it for you.

Posted on Jul 15, 2009

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1 Answer

When I print with my brother hl-2070n...the print out is very very faint. i have changed the toner and drum...any suggestions?

if you printing is just faint, need to replace toner, but if your printing is faint and blurry, need to add grease to the fuser film roller, need advanced skills for that, disassemble the fuser unit take out the fuser film and put some special high temp grease on the heating element, assembly all back and install, the other way is replacing the fuser unit

Mar 12, 2013 | Brother HL-2070N Laser Printer

1 Answer

My Brother MFC 7840W prints but has a faint copy of the previous paragraph about 3 inches below. I have cleaned the corona wire very thoroughly but still the 'ghost' printing on my documents. How do I fix...

Yes. The drum is most likely your problem. It is possible that it is a one time problem, which can occur if you print a very dark black page or image followed by a light gray page or image. If it has only happened once or twice try printing a different document to check it. If it is happening repeatedly, then you should replace the drum and instantly see it fixed. You can get a drum anywhere that supplies toner.

I hope this helps! Good luck!

Feb 28, 2011 | Brother MFC 7840W Printer

2 Answers

Ghost printing


You have a worn image drum. The drum is the part of the printer that the print image is created on before it transfers the toner to the paper. This part is coated with a very thin layer of Teflon so the toner does not stick. When it gets worn the toner starts to stick and that produces the shadow or ghost image approximately 3 inches down the page because the diameter of the drum roller is 3 inches. You will need to get the part DR-350, Office Depot has them as well as many places on the internet.

I hope this helps, if so please rate our solution.

Corporate Computer

May 14, 2010 | Brother MFC-7820N Laser Printer

1 Answer

I bought the printer in early 2006. After the initial cartridge ran out, I went through 2 TN-570 cartridges. After that my problems started. I put in a new authentic TN-570 cartridge and got heavy...

If you are still ghosting after replacing the drum (especially multiple times), it shounds like you need to have the high-voltage power supply PCB (HVPS PCB) MSRP is $43.38

No matter how little or how much you print, mostly depending on the type of paper used and the environment, this part can go out.

Jan 31, 2010 | Brother HL 5170DN Laser Printer

1 Answer

Brother 4070CDW Shadowing Problem

Check your toner if they are properly installed.

Check your drum if they are properly installed.

Clearn your toner and drum.

Print a test page.

If nothing happens please replace your printer drum

Sep 19, 2009 | Brother HL-4070CDW Printer

1 Answer

My Brother 5040 laser printer is printing a bit faint in parts of the page. I have cleaned the rollers, shaken the toner cartridge and replaced the drum unit. The quality is better, but I am still missing...

number one are you using brother oem drum and toner? generic toner will give you all kinds of problems,.. if the the paper is damp or has moisture in it it will give you weird printing , ghosting parts missing etc. good luck brother sr tech

Jan 24, 2009 | Brother HL 5040 Laser Printer

2 Answers

Ghost printing

Hi Phillip,
If you have changed the drum and toner, then check the fuser unit. The teflon coating on fuser film could be worn.


Dec 16, 2008 | Brother MFC-8460N All-In-One Printer

3 Answers

Printing is faded and too light

more important than all that nonsense is:
is it faint when you do an internal report or make a copy?
if only on copies it is the film on the underside of the glass.
if on prints and copies it is the drum.

Oct 23, 2008 | Dell 1600n All-In-One Laser Printer

1 Answer

Printing on half page only

you need to clean laser but first try to change drum and toner


Apr 15, 2008 | Brother HL-5240 Laser Printer

1 Answer

Text "ghosts" or shadows

Replace Drum or blade(if possible) will fix on most types of copiers/printers, or rarer it is cause of fuser.

Oct 19, 2007 | Ricoh Aficio 1013F Copier

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