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Brother MFC-7420 getting USB Device Not Recognized error messages

Posted on 2010-11-12
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Last Modified: 2012-08-14
A Brother MFC-7420 is not printing, and Windows gives a pop-up error message from the system tray whenever its plugged in via USB "USB Device Not Recognized".

I've deleted the drivers and the Brother software, followed the steps in Microsoft KB article 324757, and I'm still getting this error.

I found the following link but don't know if its relevant and if it is how to apply it to this situation.
http://h10025.www1.hp.com/ewfrf/wc/document?product=61872&lang=en&cc=us&lc=en&dlc=en&docname=bpy20135&printable=no&

Any ideas for the next step?

Thanks!
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Question by:ssvarc
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Assisted Solution

by:ssvarc
ssvarc earned 0 total points
ID: 34122387
After deleting the drivers and following the steps in the KB article I reinstalled the drivers.
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Expert Comment

by:dbrunton
ID: 34123685
Could you not connect it through the parallel port?
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Assisted Solution

by:SJH01
SJH01 earned 500 total points
ID: 34127367
Have you tried using the Brothers uninstall tool? You can locate this tool and updated drivers at the link below.

Make sure you select the correct drivers for your installation type (USB, Network, Parallel) otherwise printing will fail. Also remember to install drivers before plugging in your printer.

http://welcome.solutions.brother.com/bsc/public/us/us/en/dlf/download_index.html?reg=us&c=us&lang=en&prod=mfc7420_all&dlid=&flang=English&os=7&type2=-1

Good luck and post your updated comments.
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Assisted Solution

by:ssvarc
ssvarc earned 0 total points
ID: 34129805
I took the computer back to the workshop and installed and attached my Brother HL-2140 printer. It installed and printed the Win XP print test page without any issues.

Does this mean that the issue is with the MFC-7420 printer itself? Or, since I didn't use the above mentioned uninstall tool from Brother, it doesn't rule out a bad driver install when I tried to reinstall the MFC drivers? (I did use the method found in the Microsoft KB 324757 article found here.)

What's the next step?

Thanks!
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Author Comment

by:ssvarc
ID: 34129808
dbrunton:

I don't have a parallel cable to test with.
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Expert Comment

by:dbrunton
ID: 34129883
>>  Does this mean that the issue is with the MFC-7420 printer itself?

Unknown.

It would not hurt to try the Brother uninstall tool and try the installation again.

Question  When you installed did you have the Brother plugged in already or not?  And what is the install method in the manual for the printer recommend?  Usually on HP Inkjets you install the drivers without the device connected and once they are installed you plug the printer in.
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Author Comment

by:ssvarc
ID: 34129894
dbrunton:

I installed the MFC drivers with the USB cable unplugged, as the Brother instructions said to do.
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Expert Comment

by:dbrunton
ID: 34129913
>>  I installed the MFC drivers with the USB cable unplugged, as the Brother instructions said to do.

Just needed to check cause I've done it the other way and it doesn't necessarily quite work properly that way.

OK.  Do the uninstall and do the install again.  It is looking like the install didn't go through properly.
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Author Comment

by:ssvarc
ID: 34130430
dbrunton:

It is looking like the install didn't go through properly

As opposed to the printer being broken? Why do you say so? When there is no driver Windows tells you that. Here its an entirely different error message. Besides, I used the Microsoft KB method to wipe out driver files and registry keys.

I would like to here your analysis.

Thanks!
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Expert Comment

by:dbrunton
ID: 34131429
This message "USB Device Not Recognized"

If the install had occurred properly Windows would have recognised it.  Windows knows there is a USB device.  It can't find the driver for it.  The driver isn't in its database, hence the install didn't place it properly for some reason.
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Accepted Solution

by:
ssvarc earned 0 total points
ID: 34152356
I used the uninstall and then installed the drivers that I had downloaded directly from Brother. It refused to install. At this point I diagnosed broken hardware, as the HL-2140 installed and printed without any issues.
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Expert Comment

by:dbrunton
ID: 34152383
Ah, yes.

Could well be broken hardware.  I was looking at it from another pont of view.
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Author Closing Comment

by:ssvarc
ID: 34182540
As the solution isn't (to my satisfaction) iron-clad - the MFC wasn't tested with any other computers, etc. - I'm giving this a B grade and saying that it isn't fully complete.
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