1. Mechanical failure: check whether all parts of the machine are abnormal, whether their positions are accurate and whether they can move normally.
2. Related sensor failures: such as positioning sensors, pressure sensors, photoelectric sensors, etc. , check whether they are abnormal, whether they are placed correctly, and whether they need cleaning or maintenance.
3.PC software or parameter settings: If the parameters are improperly adjusted or lost, or the function options or switch settings are incorrect, they need to be reset or adjusted.