My G4210 stopped printing the red color properly. I ran the "cleaning" and "deep cleaning" several times but no improvement. what else should I do? Do I need to do ''ink flushing"? If so, do I need to purchase a particular solution for this step? Thank you in advance.
If magenta is not printing, you can try up to 3 regular cleanings or 2 deep cleanings to see if it starts to appear when you perform a nozzle check. If the magenta does not start to appear, you can try reseating the color print head and you can try an ink flush. You would not need a special solution to perform an ink flush. The ink levels will just need to be above that last ink level indication on the front of each ink tank. The ink flush will try and clear any air in the ink lines that might be preventing ink from getting to the paper.