I used a refill kit for the canon MX300 and now it won't let me print. It says it doesn't recognize the color cartridge. I've tried to re-set it, but the alarm light keeps coming on. Help!

I have used "refill" kits in the past and for the time and effort involved you might just try finding a local retailer that will give you credit for the empty cartridge to replace with a professionally refilled one.

The problem with refilling the same cartridge over and over again is that they will, eventually, need to be replaced. I would suggest that you

1 - Make sure there is nothing plugging the hole at the top of the cartridge to allow air in, which is needed to let the ink flow out.

2- Install another cartridge and you get the same problem, then it narrows your fix to something with the printer.

3 - If it is the printer, I were rubber gloves and use "denatured alcohol" and a rag (no not use anything with paper as it can tear and leave pieces inside causing the printer to jamb) and after removing all of the cartridges wipe down anything that I can reach inside the printer.

4 - Although you have tried the DEEP CLEAN, if the none of the above works for you, try the NOZZLE CLEAN. If you are still having a problem then either re-post the problem or doe a Google Search listing the model of the printer you have, you may find out it is a problem that others have experienced and there is no solution.

Good Luck

You have to refill both.

Well, you must be using PG30, CL31 cartridge for your printer.

Did you refill your cartridge?
For error 051 means printer is not reading the cartridge. (cartridge is not readable)
When you put refilled cartridge, that's what it happens.
(after 3~4 times of color refill, color cartridge is no long to use, only applies in Canon
and there is no solution for it.)

Pls replace with new one.. and will work again.

Or if you need to refill again with other cartridge, pls....unplug your printer before you taking out the cartridge. In this way, you can re use your cartridge. Little trick... but no solution will work, once cartridge is not readable.

If you would like to save money, try refill kit by "ROADINK".
Not only they are easy, but also the printing quality is good.
For your better understanding pls check out my youtube video.
And will see how easy ink refill can be done.

It is called e5 error.
For Canon cartridges, after 4~5 refills, the color cartridge cannot be recognized by printer.

In this case...there is no solution so far...just replace with new cartridge.. that's it.
(To avoid e5 error, you need to make sure "plug out" the power, before take out your cartridge for refill. Yes... "plug out" the power cords!!!!

If you would like to save money, try refill kit by "ROADINK".
Not only they are easy, but also the printing quality is good.
For your better understanding pls check out my youtube video.
And will see how easy ink refill can be done.

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r u sure new cartridge is not refilled one?

E5 error means cartridges are not readable.

When you refill your canon cartridge, especially for color one, it happens. (after 4~5 times of refills)

So you have to replace the cartridge with brand new one.

(for your additional reference, it doesn't happen to black cartridge)

So at least you can refill black...

If you would like to save money, try nozzle injection refill kit by ROADINK.
Not only they are easy, but also the printing quality is good.
For your better understanding pls check out my youtube video.
And will see how easy ink refill can be done.">

You are facing e5 error which cannot be solved.

For Canon printer, if you refill about 4~5 times, especially color, the printer does not read that particular cartridge.

Well for solution? You need to replace the cartridge with new one.
Just blame Canon....

If you would like to save money, try refill kit by "ROADINK".
At least you can easily save $100 for color cartridge (facing e5 error after 4~5 times of refill)

Not only they are easy, but also the printing quality is good.
For your better understanding pls check out my youtube video.
And will see how easy ink refill can be done.

Replace color cartridge.Printer can't print without color cartridge.In your case the color cartridge is failed.

This cartridges has a memory chip and printer will recognized refill cartridges like empty.You can't reset the ink level on all Canon Pixma printers.Push resume button and hold it for 5 seconds.This operation releases the function for detecting the remaining ink level of the above ink.The printer shows empty cartridges but it will printing.
If this not help there is a minimum chance your cartridge is failed electrically and printer not recognized.In this case replace the cartridge.

You might try a hard reset of printer along with uninstalling and reinstalling the software for the printer.
If nada, you might give Canon a call and ask their techies for their feedback on situation.

one color of your cartridge were finished, replace/refill the cartridge again