Question about Brother MFC-7820N Printer

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SCREEN MESSAGE -- REAR DOOR IS OPEN WHEN IT IS CLOSED. NEED TO KNOW ABOUT SENSER FOR DOOR.

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Try resetting to factory defaults

Posted on Mar 19, 2011

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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I have a becCo senser dryer I paused the button today and it won't come back on any suggestions what I can do


Did you try opening and close door some will not start till door was open and closed once Or unplug wait 2 min plug back in should reset if not board interface or control board stuck button
model # AGE ? needed to get better details

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HP 3050 door open message


Your printer HP 3050 has problem of door open the printer had 3 or 5 senser in which one senser is not working so the message comes on screen

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We keep getting a message -paper jam check open rear door. checked, no paper jam, opening and closing rear door will allow the print job to go through. It will work for a few print jobs, then the same...


It's probably a sensor on the fuser. There are 2 and sometimes they get stuck and just closing the rear door hard will release it. Replace the fuser.

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Changed ink cartridge; can't eliminate"door open" alert


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Door will not close unless you hold hard wired button in till clo


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Error message-Close the back cover


It appears that you have a broken back door have a look on the door to see if there is a broken piece of plastic as when you shut the rear door a tab pushes against a push switch letting the machine know that the door is closed. if you cannot see a broken piece then the switch it faulty try this by push a flat screw driver on the switch and check if the message disappears.

Thanks J

Jan 07, 2008 | Brother IntelliFax-2820 Laser Fax

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Paper jam. we removed the major portion of it. bit of paper is inside. we can't find out that. display shows 13.20.00. we removed front and back except toner catridge. what we have to do.


Try this linke below.
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=110&prodSeriesId=411171&prodTypeId=18972&prodSeriesId=411171&objectID=c00642524

Or i cut and paste text, but you should view pictures. If you cannot get to it from link. Try typing "Paper jams alternating between front and back door" It should be first link from HP about a 3550.

document.tlSearch.tx.value=unescape("") s.gif s.gif
HP Color LaserJet 3500, 3550, and 3700 Series Printers - Paper Jams Alternating Between Front and Back Door Issue Description Customers may see paper jams error messages with no paper seen in the paper path. The message will alternate between check the front door and the back door. Workaround The release lever engagement tabs on the rear door can be bumped into the in-correct position. The purpose for this tab is to re-engage the fuser release levers as the rear door is closed. When one or both of these are left in the in-correct position the printer goes into a cycle of alternating between a "Jam in the Front Door" message and "Jam in the Rear Door" message. There is no paper present in the paper path when this happens. When a customer gets the "Jam in the Front Door" message and opens the front door, no paper is found. After the customer closes the front door, they get the "Jam in the Rear Door" message. When they open the rear door, find not paper (even pull out the fuser), and close the rear door, they get the "Jam in the Front Door" message. This cycle will continue

Placing both engagement tabs in the "Correct" position solves the problem and allows the print job to continue.for as long as the customer is willing to keep checking.

Sep 27, 2007 | HP LaserJet 3550 Printer

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