Hi, #1, you should mention what kind of a problem was it oroginally and than came back, this is not a psychic forum so we don't know.
#2 - you're in wrong forum - try CopyTechNet.com thats where copier techs are hanging out, here professional users mostly.
#3 - your unit is not an InkJet, it has no PrintHead - please get your story straight, that way people at least cat try to help you which starts with understanding of the problem.
Good luck.