Sony DHC-FL7D System "disc compartment stuck" Questions

...disc compartment. We've been trying to eject the disc but it is not responding. What can we do? The disc is stocked in the disc compartment. We've been trying to eject the disc but it is not ...

...compartment and removed all the DVDs which were stuck and re-alligned all the disc trays to its original state. I checked if all the drive belts inside the DVD compartment, it was ok. Also I tried ...