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

1 Answer

Back door closed

In printer one message is coming back door open

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 163 Answers
Re: back door closed

Dear sir the the back door sensing switch or sensor is not working check it may be it is broken or faulty or may be it is only dusty clean it

Posted on Sep 26, 2007

Add Your Answer

0 characters

Uploading: 0%


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


3 Points

Related Questions:

1 Answer

On a clx-6200 message says "paper jam 0-c=open/close door. what door is this?

It is telling you that there is a paper jam. Open the door, pull the jammed paper out, close the door, it should clear the message.

Apr 21, 2012 | Samsung CLX 3160fn All-In-One Printer

1 Answer

My p0rinter is not printing with good color quality. Blue doesn't pick up. I ran the troubleshooting and the error code 3502,3501,,3830, comes up. How may I fix this? I have new cartridges. thank you....

This is from the Kodak website.

How do I resolve the error message "Printer Access Door Open" (error code 3501 or 3609)? Published 08/25/2010 11:38 AM ' Updated 01/07/2011 08:40 AM ' Answer ID 1467 How do I resolve the error message "Printer Access Door Open" (error code 3501 or 3609)? To resolve this error, close the printer access door. The printer will not operate while the door/cover is open.

If the error continues even after you close the printer access door, power cycle the printer:
  1. Turn off the power (press the On/Off button on the printer).
  2. Unplug the printer power cord from the back of the printer.
  3. Wait approximately 30 seconds.
  4. Plug the printer power cord into the back of the printer.
  5. Turn on the power to the printer.

Feb 07, 2011 | Kodak ESP 5 Printer

1 Answer

Brother (photocopier, fax and scanner machine) says << back cover open. close back cover>> but the back cover (or at least what i think is the back cover) is closed. I even opened and closed it...

I have fixed this problem on my 7820n printer by brother.

open the back door, then inside there will be a black colored other kind of like door that pulls back away from the roller. on this inner door is a black long thin plastic lever that runs from about the center of the inner door to the right. on the right end of it is a lever that slides along a curved increase on the right side wall. when both doors are closed this right end of the rod or lever moves up to close the gap between what is the sensor. this long thin plastic rod had snapped out of place and when i snapped it back in making sure the spring was correctly installed on the left end of it and the middle part of the rod slid correctly in its groove...the right end of the lever correctly closed the gap on the sensor (when both doors are closed) and the back door open error went away.

So that's how you really fix it!!!!

James Hilliard - Totally super awesome guy! hee hee

Oct 27, 2009 | Brother MFC-7820N Printer

2 Answers

I have a kodak 5500 aio printer. I replaced the

Try the following:

1. Open the printer access door.
2. Put out both ink cartridges and the printhead.
3. Let the printer access door open.
4. Put out all paper.
5. Pull out the ac adapter at the back of the printer.
6. Wait 60 sec.
7. Pull in AC adapter.
8. Wait 30 sec. then turn on the printer
9: Wait for the error message: Printer access door open.
10. Close the printer access door.
11. Wait for the error message: Printhead is missing.
12. Open the access door and put in only the printhead and the close the access door.
13. Wait for the error message: both ink cartridges are missing.
14. Open access door, put in only the black ink cartridge, then close the acess door.
15. Wait for the error message: Color ink cartridge is missing.
16. Open access door, put in the color ink cartridge and then close the access door.

If the error is solved, do a firmwareupdate right now.

You can find it here.

Sep 22, 2009 | Kodak EASYSHARE 5500 All-In-One InkJet...

1 Answer


your printer is laser printer change toner cartridge right,
you may try
1) Open the front door and remove the toner cartridge.
2) you will see a small round hole near the colour toner cartridge
3) hold a screwdriver in that hole and the carousel will rotate freely. 4) Move the carousel round and remove each one of three cartridges at a time.
set back all cartridge close door.

Jan 29, 2009 | Konica Minolta magicolor 2300DL Laser...

3 Answers

Back cover open message

I had the same error message. I also tried every compartment... Here's ultimately what my problem/solution was...

I turned the printer around and fully opened the back cover. I found that one of my kids had somehow fed a small piece of paper/cardboard into the printer. When I opened the back cover all the way I could see that obstruction (which I hadn't seen before). Pulled it out, and the error message went away. Works fine now.

Sep 02, 2008 | Brother MFC-7820N Printer

1 Answer


Something is holding the top cover on the printer open enough so it is not pressing the switch to tell it it is closed, OR there may be a back door on the printer that is not fully closed. Many printers have an access door in the back for clearing paper jams. If the back door is not fully seated and latched it will cause an error.

Mar 18, 2008 | HP Officejet 6310 All-In-One InkJet...

1 Answer

Back door closed

I did not get any error message but the 6940 printer would not print. Instead "Ready" the printer said "door open". When I deleted printer and plugged the usb cable back in the XP machine found the new hardware, said "Ready" and could print.

Dec 22, 2007 | HP Deskjet 6940 InkJet Printer

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

Related Topics:

184 people viewed this question

Ask a Question

Usually answered in minutes!

Top Brother Printers & Copiers Experts

Jim Yeh

Level 1 Expert

15 Answers

Jesus  Colon
Jesus Colon

Level 1 Expert

12 Answers

Rick Johnson
Rick Johnson

Level 2 Expert

84 Answers

Are you a Brother Printer and Copier Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides