Have you checked:
- That tilt trays are going in the right direction when needed? (e.g. left, right, straight on)
- That check-in desks are connected to the security scanning stations?
- That the security scanning stations are connected to the baggage bays?
- That there is a possible route for bags to take from their check-in desks to security scanning stations to their baggage bays?
- That baggage belts are going in the right direction?
hopefully that is able to help you