My C83 become blocked in some of the holes in the jet head, was given another for spares and realised this to had the same problem, searched for this and so many complaints for printer failing after 1-2 years. Solution is to remove black ink jet head, the piece with circuitry on back and inject with hot water to soften clogged ink in holes. Then force compressed air through head but beware ink is emitted under pressure so 20 foot shot is not unusual but should cure problem, did mine, now in its 4th year. Beware the plastic cable tidy assembly, remember how it goes back.
David
November 2007