File Number:FAQ51M-65V124
How to clean the scan file with vertical line from ADF M7300 Series Printer?
Regarding this issue, the vertical line was display when you used the ADF but used the platen was fine, it was cause by the scanner's location ( left side in red circle) platen glass is dirty. So we suggest you that you can use a clean & dry cloth to clean the platen glass as the location shows you: