20 Most Recent Brother MFC-7820N All-In-One Laser Printer Questions & Answers


If smudged stains appear at the top center of the printed page:
  • Make sure the paper is not too thick or curled.
    Also, verify that the appropriate paper is being used and that the paper type set in the machine matches the media used.
  • Make sure the paper is not curled when you print on the back side of the paper with the Print Odd Pages and Print Even Pagessettings.

- If smudged stains appear at the right or left corner of the printed page:
  • Make sure the paper is not curled when you print on the back side of the paper with the Print Odd Pages and Print Even Pagessettings.

- If smudged stains appear on the reverse side or at the bottom of the page:
NOTE: Illustrations shown below are from the representative product and may differ from your Brother machine.
  • Make sure the printer platen is not dirty with ink.

    How to clean the machine's printer platen
    1. Unplug the machine from the AC power outlet.
    2. Lift the scanner cover until it locks securely in the open position.
    3. Clean the machine's printer platen(1) and the area around it, wiping off any scattered ink with a soft, dry, lint-free cloth.
    4. Close the scanner cover.
  • Make sure you are using Genuine Brother Innobellaâ„¢ Ink.
    > Brother Genuine Supplies information
  • Make sure you are using the paper support flap.

    To use the paper support flap, pull out the paper support (1) until it clicks and unfold the paper support flap(2).

platen1-y4i03b33115mpu3ejihwhjwc-5-0.gif

flap1-y4i03b33115mpu3ejihwhjwc-5-2.gif

Brother... | Answered on Sep 14, 2017


Clean the corona wires.

Brother... | Answered on May 08, 2017


You might have gotten toner on the corona, take the toner/drum unit out there is a blue knob. slide that a couple of times and try it.

Brother... | Answered on Mar 28, 2017


Hi There,

When you installed your new drum did you reset the drum by.

1 - Opening the front cover.
2 - Press the options button up on the panel.
3 - Press 1 to reset
4 - Close the front cover done.

If the issue persists after resetting your drum contact brother technical support you may have a defective drum unit.

Thanks,

Viper1969

Brother... | Answered on Oct 19, 2015


Lift the lid and to the left of the main glass is a smaller glass; that is what scans during the feeding process. Make sure that it is completely clean; even a speck of dust can cause a line to appear. I took a lens wipe and cleaned mine and my line was gone.

Brother... | Answered on Feb 07, 2013


I fail to see why you are covering up the toner sensor led's when you have a new cartridge fitted?
Also if you are using a recycled toner from a very well known uk shop that refills toners and ink then you may well have broken the drive gear that stirs the toner. i have seen this six times and their toners do this.
It could well be one of the pitfuls of recycled toners.

Brother... | Answered on Jul 24, 2011


Try fanning the paper before putting it in the printer. Try a paper from fresh (new) **** of paper. Try a different brand of paper.

Brother... | Answered on Jul 18, 2011


Is a WordPerfect problem.
In WordPerfect go to file/page setup/select letter (or whatever)/edit/source - set to auto select.
Problem solved!

Brother... | Answered on Dec 02, 2010


Open front cover where drum/toner goes in
Press "Options" key on control panel
LCD will display "Replace Drum 1. Yes 2. No"
Press 1 to reset drum
Close front cover

Brother... | Answered on Nov 10, 2010


Hello,

Replacing the unit might not still solve the problem, because sooner or later, you will still face this same problem again, i will advice if you can discard or sell the stock on the unit you still have at hand and adhere or go for a better option that will be cheaper in maintenance, this will save you alot of stress and money by so doing, but replacing the unit might still bring you back to square one again.

And on the MFC 7840W, you are still required to adhere to their maintenance instruction, otherwise, you will face same problem.

Take care.

Brother... | Answered on Oct 09, 2010


Normally it says telephone if you are on the telephone letting you know that the line is in use.

If your not on the phone and says telephone, push the hook button, it should go back to normal screen

Brother... | Answered on Sep 28, 2010


You need to open up Control Control Center.

CLick on start, all programs, brother, and then control center 3. Once the program has openned, click on configuration and chose scan then email, you can change the email application from here with the drop down list and can actually make any other change you wish. Make the same changes in the device button tab.


Brother... | Answered on Apr 21, 2010


You can download the manual directly from here:

http://www.retrevo.com/search/v2/jsp/mytrevo/myTrevo.jsp?page=man

Hope this helps. If so, please rate. Thanks.

Brother... | Answered on Apr 14, 2010



Setting the Ring Delay
The Ring Delay sets the number of times the
MFC rings before it answers in Fax Only or
Fax/Tel mode. If you have extension
phones on the same line as the MFC or
subscribe to the telephone company’s
Distinctive Ring service, keep the Ring Delay
setting of 4.
(See Operation from extension telephones on
page A-4 and Easy Receive on page 4-3.)
1 If it is not illuminated in green, press
(Fax).
2 Press Menu/Set, 2, 1, 1.
3 Press ▲ or ▼ to select how many times
the line rings before the MFC answers
(00 - 04).
Press Menu/Set.
(If you select 00, the line won’t ring at
all.)
4 Press Stop/Exit.
Initial Setup
1.Receive Mode
Current Receive Mode
Fax : Fax Only
F/T : Fax/Tel
TAD : External TAD
Mnl : Manual
Setup Receive
1.Ring Delay

Brother... | Answered on Apr 02, 2010


you can remove the toner and drum from the machine, slide the tab back and forth about 20 times then blow in the slot. when you put it back in the machine if the problem keeps happening it would be a problem with the toner cartridge and it would need to be replaced

the reason this happens to toner cartridges is because the rubber roller tarts to wear out.

Brother... | Answered on Mar 31, 2010


Hello Daysinn,

The "back cover open" message is usually caused by a paper jam inside the printer.
Follow these steps to rectify the problem.

1. Unplug the power to the printer.
2. Open the back and front cover.
3. Remove the drum and toner, this may be difficult because it may be stuck; don't be afraid to pull hard, you wont break anything.
4. Check for any foreign objects, most likely a peice of paper.
5. Reinstall the drum and toner.
6. Make sure to close the front and back covers.
7. Turn the power back on.

If the message stays after all this, there may be a sensor not working.

Thanks,

Pat

Brother... | Answered on Mar 25, 2010

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