1) Remove all the ink cartridges from the printer
2) Cut long strips of paper towel and place them raound the area where the cartridge will absorb the cleaning solution
3) For each color that is now showing up properly, inject a few drops of solution into the hole where the ink enters the printer. (Avoid injecting air)
4) Repeat for all other colors that aren’t showing up properly
5) Remove the paper towel strips from the printer and reinsert the cartridge
6) Allow a few hours to pass before using the printer
7) Run a few test pages