¶ 1. Phenomenon:
¶ The nozzle scratches or hits the heat bed during automatic leveling or printing.
¶ 2. Troubleshooting
¶ （1）Ensure that the leveling module plug and connect wires are not skewed, and that the wires are not tangled
¶ （2） Check whether the leveling module itself is damaged. If no blue light is shown when clicking the leveling module, it means the leveling module is damaged, you can contact the after-sales email to deal with it: service@flsun3d.com
¶ （3） Slide the slider of the three axes to see if there is any obvious resistance, check whether the elasticity of the three belts is the same, and there is any stretching or deformation
¶ （4） Refresh the firmware for the motherboard
¶ Link to the official website to download the firmware: https://flsun3d.com/pages/speeder-pad
¶ Link to the procedure for flashing the firmware to the motherboard:
https://www.youtube.com/watch?v=8g3bSNh9KEo
¶ （5） Replace printer.cfg file
¶ printer.cfg configuration file official website download link:
[https://flsun3d.com/?fbclid=IwAR2o-rpj6_kDIkAESegw0AOpP32Y7e02_Myks7tHosgCuqSketTeqHeutU](https://flsun3d.com/?fbclid=IwAR2o- rpj6_kDIkAESegw0AOpP32Y7e02_Myks7tHosgCuqSketTeqHeutU)