sorry to sound like someone goofy, but
my epson had trouble like this when i made my own
negative holders for 5x7 sheets, and i neglected to cut "a notch"
in the top of the holder, so the lid didn't see the signal to light up.
this also happens when i put the film holders in upside down
since the bottom is then notched and not the top ...
so my goofy question is, have you got your negative holder seated
bottom side down, right side up ? i know from my own "user error"
it is easy to oversee this. it is just as easy as not calling someone
by the right name
sorry for your troubles carol and cheryl,
jim ( and john )