cfs internal hub motor is not running

cfs stopped advancing filament to extruder. found blockage at internal hub. could push filament to hub and advance by rotating gear by hand. when trying the cfs, the motor did not turn. do I replace the motor or is there another troubleshooting thing I should do?

Here’s some of the scant documentation on the CFS provided by Creality. Troubleshooting is halfway down:

https://wiki.creality.com/en/cfs

Additional stuff here:

https://wiki.creality.com/en/k2-flagship-series/k2-plus

Some information in this documentation is decent. Some leaves a lot to be desired.