The small side panel is easy to remove, via 1 screw.

The front bottom left panel s a bit tricky to remove; it is best to start with the small door on the left, on the second image, where two screws at the bottom keep it in place.

Once this has been removed, two more screws at the bottom can be removed to disassemble the right panel. it als has a small hook on the tight, that needs to be dislodged from a pneumatic tube.