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Message: [QUOTE="Deleted member 14725, post: 221270"] Sorry I totally missed that detail. I do not for sure if the following [B]is[/B] the explanation to your problem or not, but it's worth being informed. Brother cartridges have a moving (sort of floating) part inside, this changes as the ink is consumed and will change back once the cartridge is refilled. The function of this "lever", is to block the light in one part of the cartridge. So, a something (light? infrared? I don't know) is emitted and a sensor on the other side of the cartridge gets this signal. IF the transmission is physically blocked: there is still ink on the cartridge. And if there is no blocking, then the signal passes to the other side meaning there is no link inside the cartridge. You can probably see this moving part here: [MEDIA=youtube]9PNKbrx9Nw0:43[/MEDIA] In case of refilling, or experiencing issues with this, you should shake the cartridge trying to see if the lever goes back to the blocking state. You can extract your cartridge to check it out. Other than that (yeah I hate this part) - Check if the printer cartridge CHIP is present, well positioned, not moved, absolutely clean, not damaged, wet, or dirty. - Check you have the right cartridge for the printer, otherwise your printer will not recognize the chip. - If possible try another cartridge, perhaps yours are damaged. - Try cleaning the contacts for the chip inside the printer, perhaps these are dirty, wet, damaged, etc. Use a flashlight. It's worth keeping all your used cartridges, with Brother printers you can always refill them and even get a chip reseter to report the right ink levels. Or at least you could try in these cases diff ones without buying. [/QUOTE]

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