I have repalced red cartridge in CP1215 laser

should of included a pic of print.
Blurred prints are usually fuser related.

If it's only the black that's effected it suggests that it's a problem with the toner cartridge rather than the printer itself. It may be a faulty toner cartridge, especially if you use cheap compatibles rather than genuine HP branded ones. You could try taking it out of the printer and giving it a good shake to make sure that the toner is evenly distributed in the cartridge. If that doesn't help then I think you need to replace the black cartridge. I had that problem with one of my colour cartridges but everything was fine after I replaced it.

Sounds like you have a defective cartridge. Replace that cartridge and retry.

I know the frustration being in IT for over 20 years working on various peripherals.
These printer MIX so that way there is a balance at the final phase. You have to purchase a magenta cartridge to get this working again. Bypassing this will make tis printer suffer and long term damage can cause a economical issue on your end in the long run.
Now if your at a critical point you can bypass but I do not professionally recommend this but here it goes.


1. Open the CP1210 Series Toolbox 2. OPEN System Settings 3. Then enable Cartridge Out Override 4. Then click apply
I hope this works for you, whilst you purchase a magenta toner. Please do not forget to leave a positive rating and feedback.

Best of Luck
Rulds2008

It is not possible to print while an empty cartridge is in the printer.
Try shaking the yellow cartridge and try printing again.
There may be enough toner left for a few more pages.

It mean when your toner is near empty,then red light flashing.tow light is fixed or red mean toner cartridge is empty.must be replace toner cartridge.You buy a new cartridge and put in your printer then printer is OK.
you can also get better idea please read printer user guide.

Yes
You have to repalce chip of the cartridges when you refill toner.

You have to reset your printer or repalce chip when you refill the toner cartridges

www.nakshatraworld.com

go to samsung website and see if they have smartpanel for this printer,download to pc and run,will solve your problem

Try another toner cartridge.