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Hello, I just bought a brand new Canon MF743 CDW. The COLOR scan function via Platen Glass generated a lot of light BLUE noise in the background for both output PDF or JPEG file.The same image placed on Platen Glass, the COLOR copy function looks pre...

I bought a brand new MF726 CDW in 2016. But I did not open until a year later. The COPY or SCAN function outputs a blank page while the print function is O.K. I notice that the scanning light in Platen Glass never lid up even though the motor and bel...