A PDF file of the schematics can be downloaded here:
Since the SOM represents a significant piece of IP for Avnet, we do not share the Altium sources for the schematics or PCB layout. We do, however, provide design services for board customization, and in some cases provide the sources for a fee and license agreement. Please contact your local Avnet FAE if either of these options sound like something you may be interested in. If you don't know your Avnet FAE you can look them up here:
Europe / Middle East
I understand the SOM is significant IP of Avnet, but are the Altium source files available for the "FMC Carrier Card V2" board?
Avnet does not publish the Altium design files for any of our designs, including the Carriers. However, you can work with your local Avnet/Silica/EBV FAE to discuss options. narrucmot has provided links above to help you find your FAE.