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Nathan
Nathan, Engineer
Category: Printers
Satisfied Customers: 20349
Experience:  Computer networking/repair. 12+ years experience.
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My Borther MFC 9340 signals to change the toner black ink. I

Customer Question

My Borther MFC 9340 signals for me to change the toner for the black ink. I did and although I have changed toners many times, the same error message appears on the display pad and I can't print.
Any suggestions?
Submitted: 1 year ago.
Category: Printers
Expert:  Nathan replied 1 year ago.

Hello, I’m Nathan, and I’ll be assisting you today. My livelihood depends on your positive feedback, so your satisfaction is my highest priority.

Sorry to hear you’re having trouble.

Are you using genuine brother toners, or generic/refilled ones?

Customer: replied 1 year ago.
genuine brother toner
Expert:  Nathan replied 1 year ago.

There are a few possible causes of this issue, including a bad cartridge, internal debris/contamination, or a hardware failure (bad logic board, faulty sensor, etc).

What we can try are some cleaning and reset steps.

First remove the toner, then clean the metal electrical contacts on the back, as well as where they mate up inside the printer, using qtips and rubbing alcohol. Dry well, then reseat

Then reset the machine:
unplug power at the wall outlet
wait 5 minutes
press and hold the power/on button for 60+ seconds
keep holding while plugging back in, and for another 60 seconds after, then release

Let me know the results, and I'll advise further if needed.

Nathan

Customer: replied 1 year ago.
I will do this and get back to you in 10 minutes
Expert:  Nathan replied 1 year ago.

Thanks, ***** ***** luck!

Customer: replied 1 year ago.
Nathan, I still have the same problem.
Alexandra
Expert:  Nathan replied 1 year ago.

Thank you for trying,

do you happen to have another cartridge handy, or even the old one that you can try?
At this point, it is either a bad cartridge, or an internal hardware fault. We will need to try another toner as a next step.

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