Epson Perfection V370 Quick Start Manual page 4

You cannot scan negative slides with Full Auto Mode.
Make sure the white stickers on the back of the film holder and the areas around them are not
scratched, dusty, or covered in any way. If the areas are obscured, the scanner may have trouble
recognizing your slides in Full Auto Mode.
Do not cover the small holes on the film holder.
Place the film holder on the document table so that it is aligned as shown. Make sure the tab
with the slide icon on the film holder fits into the area with the same icon on the scanner.
Place up to four slides in the film holder with the shiny base side facing down. Your images should appear
backwards on the side that faces up. Your images should be oriented as shown.
Note:
Make sure you place the long edge of the slide in the film holder as shown above.
Make sure you removed the document mat. See Removing the Document Mat.
Close the scanner cover.
To scan your film, see Using the Scanner Buttons.