a. Check if the size of model in X axis is very close to the biggest size in specification.
Adjust the size of model and try again.
b. Turn motor off in “system” interface. Manually move extruder assembly in X axis to activate L&R limit sensor, and use “M119” order to check the status of the 2 sensors.
Figure 22-1. The value should be “1” when it is activated.
c. Replace the sensor as needed.