The original might have been loaded upside down. In the ADF, put the top end of the original
media stack into the ADF input tray, with the media stack face up and the first page to be
scanned on top of the stack. See
Loading originals to copy or scan
If you are getting blank pages when scanning from the flatbed, make sure the original
document is loaded correctly. Place the original document face down on the flatbed scanner
with the top left corner of the document located in the lower right corner of the glass.