Epson B813102 Using Manual page 15

3 To replace the strip cover:
Insert the two tabs on one end of the cover into the two
corresponding slots in the holder.
Swing the cover down, fitting the cover holes over the
pins on the holder.
Snap the cover shut.
4 Repeat steps 1 through 3 for all the filmstrips you want to
scan.
5 Place the filmstrip holder on the document table with the
corner against the notch on the transparency guide. Align
the triangles on the filmstrip holder and the transparency
guide.