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John, Computer Science Engineer
Category: Printers
Satisfied Customers: 5077
Experience:  CompTIA A+ & Microsoft Certified Professional with 15 years of experience repairing computers and printers.
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Canon Pro9000 II. Recently started only printing CMY, with

Customer Question

Canon Pro9000 Mark II.
Recently started only printing CMY, with no output from the remaining five colors. No amount cleaning or even a changed print head affected the result. Is this a cable or logic board issue? Thanks
Submitted: 1 year ago.
Category: Printers
Customer: replied 1 year ago.
Note: I have a backup Pro9000 Mark II that works just fine with the setup I have. I even tested the brand new replacement head on it, and it's perfect. Seems to be a hardware issue with the first printer, so far as I can tell.
Expert:  ptraversiii replied 1 year ago.

Hello it seems like it could be either. I would try the cable first but if that doesn't work then yes you are looking at a bad logic board.