Motor cannot rotate/gets stuck?
Here are some guidance to troubleshoot the motor issue.
If there is resin leakage in the motor part, it cannot operate normally. If so, the motor needs to be replaced without additional testing.
Please turn off the machine and try to rotate the Z-axis screw with your hand manually to lift the printing platform.
Please reinstall the fixing screw of the anti-backlash nut. Do not tighten it too tightly, otherwise it will affect the z-axis rotation.
Or remove the two fixing screws of the anti-backlash nut and lift the Z-axis through the touch screen. Can the Z-axis rotate normally?
Please try to add lubricating oil to the guide rail and screw rod.
Reinstall the motor, is there any improvement?
Please put the machine's firmware files (2 files) in the root directory of the USB flash drive, insert the USB flash drive into the machine, and then restart the machine, the machine will automatically update the firmware.
Once done, unplug the USB and delete the firmware file.