Hi all,
The feeder motor of my UM2 not spin well, first of all, it seems cannot move well, then it spins wrong direction when remove and insert material.
Following is the veido for your reference:
When remove material, motor spin clockwise, then I pushed insert material button, it spins anti clockwise.
This printer not connect with PC, we print file only via SD card, I am not sure if SD card affect the firmware or not.