Thank you for your reply.
ArcScan is enabled.
I generates vector, but I cannot clean raster to make it nicer. Raster is in TIFF, and not in database. Raster cleaner picks up proper preview of selected features, but the button erase selected cells is grayed out, as well as button Start cleanup. One more problem happened when I upgraded to 10.4.1 version, classify button is not working. It clicks, but not doing anything. 10.3 version doing fine with the same TIFF.
Roman