Brother MFC 7420 All-In-One Laser Printer "sensor board" Questions

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Question about Brother MFC Office Equipment & Supplies

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...sensor to logic board or a defective logic board. And what is very common, something dropped in the printer and really blocks a sensor. check all places where the paper can go, if perhaps a paperclip ...

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Question about Brother MFC Office Equipment & Supplies

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...look at it, if the middle section has ink in it, then most likely the sensor board is bad. Generic inks tend to cause this problem. If you don't see ink, then the cartridge you have really is

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Question about Brother MFC Office Equipment & Supplies

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...supply is bad or your main board is bad. You should take it back.Check for paper jam and check all sensors make sure there is no paper blocking any sensors. Good ...

Question about Brother MFC Office Equipment & Supplies

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...sensor. This is a known problem with a lot of the small Brother machines and if its not a case of the black plastic arm within the black plastic guide in the rear of the machine infront of the rear ...

Question about Brother MFC Office Equipment & Supplies

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...sensor. any suggestion on how i can fix this? This is crazy.... It is probably a faulty cartridge, ink jet unit stopped up, or a cable that could be loose in the machine from the main board to the ...

Question about Brother MFC Office Equipment & Supplies

2 Answers

...and turn the printer upside down. I removed the support bar to get to the flag. You will see the sensors on a small board near the paper rollers. Make sure both flags are in the middle of the ...

Question about Brother MFC Office Equipment & Supplies

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board, and if you remove the connection of the switch beside or under of the motor of the belt of printer head, the error is unable to print50, OR try to clean your encoder strip, and the sensor also,

Question about Brother MFC Office Equipment & Supplies

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...sensor PC board contaminated with Ink. The Ink may be relatively low resistance so this board could be toast. I put Brother ink cartriges back in my machine and it did not work again, ever. When the ...

Question about Brother MFC Office Equipment & Supplies

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sensor problem with the brother's all in one printers. I do not know what was meant to put paper over the window. where is it located. Over all I like the brother printers but I will not buy a 3rd one

...obvious fix is to buy a new catridge, insert, power off machine, then switch back on to reset any sensors. But if the circuitry on the machine itself is faulty it wont fix it. I used to own an MFC ...

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