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That sounds like a severe control circuitry problem.
But there is a possible fairly easy fix, perhaps. Open the printer up, as if to replace cartridges. View the printer's interior... is there dust inside it?
How old is the MG5650 printer in question?
I think your printer will need repair-servicing for this problem. I've got enough experience to recognize a severe problem when I hear about one (though I would be more sure if I actually saw a scan, for instance, of one of the defective pages.)
Do you need any advice as to where to take the printer for service-repairing?