Tools: 2mm hex driwer
Loosen Motor Mounting Screws:
Use a 2mm hex wrench or screwdriver.
Raise the bed to access the four screws at the bottom of the lead screw.
Loosen these screws about half a turn each to allow slight movement of the motor.
Adjust the Bed:
Lower the bed all the way down, either manually or via the Duet web interface, until you encounter resistance or hear a grinding noise.
This ensures the lead screw is fully extended and aligned.
Tighten the Screws:
Tighten the screws one by one. Initially, tighten the accessible screws with the bed fully lowered, then raise the bed to securely fasten any remaining screws.
This process should realign the lead screw with the linear rail and resolve the jamming issue.
Test the Z-Axis:
Move the Z-axis all the way down and up multiple times to ensure the problem is resolved.