During Input Shaping calibration, which includes several steps such as automatic belt tensioning, cutter position calibration, and vibration compensation, the extruder must be free of filament for successful cutter position calibration. This prompt appears when the filament break detection is triggered during Input Shaping.
CFS filament in use: Manually click "Retract". If cutting fails and reports unloading failure, unlock the motor, manually pull the extruder to hit the cutter push rod to cut the filament, then click "Retract" to unload the filament back into the CFS.
Spool holder filament in use: Manually click "Retract". If cutting fails and reports unloading failure, unlock the motor, manually pull the extruder to hit the cutter push rod, then click "Retract". After successfully unloading, manually remove the filament as it cannot automatically retract past the filament break detection in the extruder.
Filament broken inside the extruder: Follow the steps to handle the broken filament before initiating Input Shaping, Troubleshooting for K2 Plus Jammed Filament
Check the filament status, whether it's in normal use or abnormally broken.
If the filament is in normal use, click "Retract" to completely remove it from the extruder, then rerun Input Shaping.
If it's in an abnormal state, handle it according to the method Troubleshooting for K2 Plus Jammed Filament, then run Input Shaping.