https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/Canon-pro9000-error-9200-problem/m-p/84432#M32642 My canon printer pro9000 before got error 9100 totally cannot print anything,so I sent to canon service center ,but they take off the print head and said don't need to bring that,they will use center to test it.they mention need to change unit carriage and purge unit.After repair and send back to me testing,unfortunately still cannot function and appear error 9200. The technician said my print head problem ,before he testing in center no problem,advise to change new print head.I feel unreasonable why before that return the print head for me and now said my print head problem.i like to ask error 9200 must change print head? I feel unfair for me to keep in ask me to change parts again. Wed, 09 Apr 2014 16:56:48 GMT debbychng 2014-04-09T16:56:48Z https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/Canon-pro9000-error-9200-problem/m-p/84432#M32642 My canon printer pro9000 before got error 9100 totally cannot print anything,so I sent to canon service center ,but they take off the print head and said don't need to bring that,they will use center to test it.they mention need to change unit carriage and purge unit.After repair and send back to me testing,unfortunately still cannot function and appear error 9200. The technician said my print head problem ,before he testing in center no problem,advise to change new print head.I feel unreasonable why before that return the print head for me and now said my print head problem.i like to ask error 9200 must change print head? I feel unfair for me to keep in ask me to change parts again. Wed, 09 Apr 2014 16:56:48 GMT https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/Canon-pro9000-error-9200-problem/m-p/84432#M32642 debbychng 2014-04-09T16:56:48Z