Hi Quique!
Welcome to the Canon Community and thank you for your post!
So that the Community can help you better, we will need to know about any error messages you're seeing, and the Computer Operating System you're using (Windows Vista/7/8/10 or Mac OS 10.x), as well as the way you connect to your printer (USB or networked via WiFi or Ethernet).
Any other details you'd like to give will only help the Community better understand your issue!
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Thanks and have a great day!
