This is similar to a recent post relating to an Epson 1240 scanner click here
In manual mode it will either scan the whole area, or just the area you've manually selected -- but it won't try and detect if there's a document there and it won't give an error message saying there isn't a document. So, have you set all the options to manual?
I havnt got what you describe as a hinge I have a normal type flatbed and a small device like a computer mouse but a bit larger.
This device has the same sort of light in it as the flatbed. You insert the negative into a special holder and place the device over the top
When I select negative as the media and scan it goes through the motions of scanning , the flatbed goes off and the device comes on , I get a progress bar and when this finishes it says it is unable to find a document
It works fine in the ordinary way ie. documents and Photos its just the negative part that dosnt want to function