Coolscan ed 4000

The scanner has a lock which locks the film adapter into the scanner when film is inserted. You probably still have film in the adapter from the last time you used it. If the adapter is pulled to remove it, the connector can become disconnected, which prevents the film from coming out, but the latch is still engaged. With the scanner off, push in the adapter to mate the internal connector. Turn the scanner on then off, the film should eject. Once the film is ejected, the adapter should be able to be removed. Refer to your manual for reference to this problem, I have experienced once before. Once you figure it out, you will not forget, I guarantee.