How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Colin Vincent Your Own Question

Colin Vincent
Colin Vincent, Engineer
Category: Printers
Satisfied Customers: 1543
Experience:  City of Guilds 224, Kyocera, IBM, Novell certifications. 24 years IT experience.
29964247
Type Your Printers Question Here...
Colin Vincent is online now
A new question is answered every 9 seconds

I have a brother mfc-7820n and it keeps saying the back cover

Resolved Question:

I have a brother mfc-7820n and it keeps saying the 'back cover open. close the back cover' the back cover is closed.
i have switched it off and back on, and still it shows this.
how do i rectify this problem.
many thanks.
Submitted: 4 years ago.
Category: Printers
Expert:  Colin Vincent replied 4 years ago.

Hi there

 

Did you have a paper jam prior to this occurring ?

Customer: replied 4 years ago.

i did indeed

 

Expert:  Colin Vincent replied 4 years ago.

Ok

 

It's a quirk of this printer that if you turn the power off and on again with a paper jam still present it will give a back door open error when you turn it on again.

 

That indicates the printer thinks you have a paper jam still in the fuser area of the printer.

 

If you open the front of the printer and remove the drum etc and make sure it is clear of any paper and then go to the rear and open the door. To the right of the fuser you should see a tab that you can pull to open the fuser cover. (see pic)

 

graphic

 

Check for anything caught in the fuser area and if found remove it.

 

Then put everything back and check the status of the printer. (may require a power off to fully clear)

 

All being well it will be back up and running.

 

Customer: replied 4 years ago.

thanks, XXXXX XXXXX done all that, and it is still saying the same thing. i'll try again.

Customer: replied 4 years ago.
nothing is jammed - no paper is trapped. is there anyway to reset the printer?
Expert:  Colin Vincent replied 4 years ago.

 

There is a jam sensor on the fuser that if dislodged will continually give this error.

Brother have since updated the part to improve it's reliability.

 

i can only describe it as a long thin piece of plastic that runs from the center of the fuser to the right side.

 

On that bar is a lever which hits the paper as it feeds through to tell the printer paper is present. If that is broken or dislodged then you will get a solid jam or door error.

 

 



Edited by Colin Vincent on 6/15/2010 at 3:18 PM EST
Colin Vincent, Engineer
Category: Printers
Satisfied Customers: 1543
Experience: City of Guilds 224, Kyocera, IBM, Novell certifications. 24 years IT experience.
Colin Vincent and 10 other Printers Specialists are ready to help you
Customer: replied 4 years ago.

Colin

You're a star - I found that little thing, and it had come out of its place, put it back and away we go.

 

Many thanks for your help.

Sarah

Expert:  Colin Vincent replied 4 years ago.

Great.

 

Hope it behaves itself now.

Customer: replied 4 years ago.
so do I - thank you once again. I have saved you in favourites - if i have any further queries and i would like you to deal with them, how do i contact you?
Expert:  Colin Vincent replied 4 years ago.

You can request me from the list of experts when you ask a question.

 

I will do my best to help



Edited by Colin Vincent on 6/15/2010 at 6:26 PM EST

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
< Last | Next >
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
  • He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here. Diane Dallas, TX
 
 
 

Meet The Experts:

 
 
 
  • John

    Computer Science Engineer

    Satisfied Customers:

    4979
    CompTIA A+ Certified and 12 years of experience repairing computers and printers.
< Last | Next >
  • http://ww2.justanswer.com/uploads/CO/ComputEngineer/2012-2-6_20858_20111114201751jalogoold.200x200.64x64.jpg John's Avatar

    John

    Computer Science Engineer

    Satisfied Customers:

    4979
    CompTIA A+ Certified and 12 years of experience repairing computers and printers.
  • http://ww2.justanswer.com/uploads/EN/Engineer1010/2012-6-9_132423_jaj12a.64x64.jpg Andy's Avatar

    Andy

    Elec & Comp pro

    Satisfied Customers:

    2704
    11yr exp, Comp Engg, Internet expert, Web developer, SEO
  • http://ww2.justanswer.com/uploads/SO/sowravd85/2012-6-7_20337_200910140042.64x64.JPG Sowrav D.'s Avatar

    Sowrav D.

    Engineer

    Satisfied Customers:

    2609
    Completed Course In Computer Hardware and Printer Repairing
  • http://ww2.justanswer.com/uploads/RT/rtryan01/2012-6-7_211540_DSCN0331.64x64.JPG Richard's Avatar

    Richard

    Technician

    Satisfied Customers:

    2219
    AAS Degree in Computer Technology.
  • http://ww2.justanswer.com/uploads/LO/LongTermTech/SMILE4LARGE500by500.64x64.GIF Russell H.'s Avatar

    Russell H.

    Printer and Office

    Satisfied Customers:

    2057
    11+ yrs experience, inkjets & lasers, from huge to portable
  • http://ww2.justanswer.com/uploads/WA/wa94sound/2012-6-6_202633_iStock000007010121Small.64x64.jpg Bernie's Avatar

    Bernie

    Printer Technician

    Satisfied Customers:

    1997
    6+ years experience, Microsoft MCDST/CompTia A+ Certified
  • http://ww2.justanswer.com/uploads/SH/Shefin/2012-6-6_17328_1.64x64.jpg Shefin's Avatar

    Shefin

    Printer and Office Equip. Specialist

    Satisfied Customers:

    1740
    Working as tech support specialist with a worldwide computer manufacturer.
 
 
 

Related Printers Questions