Posted on Apr 25, 2009

Alarm light flashes; lcd toner low. But it's not!

We have a Canon MF5770 (G3). The alarm light flashes with lcd msg: toner low. Toner is not low. Can we get rid of flashing alarm light somehow?

ikaterini Apr 27, 2009

How do I know that the toner is not low? Because I just placed a new cartridge into the printer. And this message has been showing up now for several toner cartridges. You "sensor is defective" might be more accurate.

2 Answers

Anonymous

How do you know toner is not low? You can't get rid of the message. The toner sensor is within the printer, and if it says 'toner is low', then it either "is" or the sensor is defective.

Victor441

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Posted on Jul 04, 2009

Victor441

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I found this in an online forum:

"Chip on the cartridge MUST be replaced with new one."

Sounds like the MF5700 series operating system won't recognize a refilled cartridge that does not contain a new microchip.

Anyone know if this is true - and if so, any workarounds?

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Alarm button flashing says install cartridge. I put new toner cartridge in but after reset, unplugging etc the alarm light and message still come on? Thanks

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Alarm light flashes; lcd toner low. But it's not!