For a few days my Canon MF 729cx printer has been printing vertical bands, always in the same place, blue, sometimes blue and magenta, maybe a little yellow too. I went through the menu to clean everything I can: printheads etc. Nothing works.
Do you have any idea where it could possibly come from? I saw on a site that it may be "the oven", does that change?
Thanks for your help 🙂
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