Hi,
Falcon I,II??
The covers of the printing carriage are very easy to remove.
DX2 print-heads for Falcon I, right?
Carefully, remove dampers first, then you have 2 screws and a spring(take them out) and after you pull it out from it's location, just unplug the connectors(head cables).
If it's Falcon II, then, instead of 2 screws, you will have 3 for DX4 heads. In that case,after you pull out the dampers, you should remove the connectors (head cables), for easy access to the screws.
All this operations must be done when the printer is unplugged to prevent unpleasant situations like burning a fuse or something.
Good luck with that!
Regards