Epson Expression 1680 Reference Manual page 83

4. Open the Transparency Unit, then place the film holder on the
document table and align it as shown below.
5. If the reflective document mat is installed on the
Transparency Unit, remove it, then close the Transparency
Unit.
Note:
Make sure the Transparency Unit is completely closed.
Otherwise an option error will occur and scanning will be
cancelled.
When scanning transparencies, store the reflective document
mat in the Transparency Unit pocket.
c
4-14
Options
Caution:
Do not put anything but the reflective document mat into
the Transparency Unit pocket.