We have just installed a refurbished MF743cdw. Everything is connected and seems to be working well. Today I attempted to complete a duplex scan. I get a 2 and 7/8 inch solid print defect centered from top to bottom down the rear page. This defect appears on both B&W and color options. It is possible to make out some of the text within the defect band. It is like there is something obstructing the center top side scanning mechanism. Any suggestions? Thanks.
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