I have tried all the suggestions found under the topic "black won't print" on this forum with no luck. Have cleaned the printhead numberous times, installed new cartridges, unplugged printer, etc. This started suddenly, was printing fine, started right after I cancelled a couple print jobs. Also, when I choose "align printer" I get "alignment failed" message.
The black not printing happended once 6 months ago, but after the printer was off overnight it printed fine, was not so lucky this time. Any assistance would be most appreciated as I have now spent hours trying to resolve this issue.