" The 1st order mechanical resonance mode of X axis differ much from last calibration , please re-run the machine calibration later "
These error codes below shows the same problem of different axis:
0300 1000 0002 0002
0300 1100 0002 0002
In the default start gcode, the printer will perform a fast mechanical resonance mode checking, if the result shows that the resonance mode has drifted away from the last auto-calibration, this error message will present.
Follow the instructions in this video to re-tension the belt and clean the carbon rods:
These wiki guides can also help: Belt tensioning procedure | Bambu Lab Wiki; How to clean the carbon rods for Bambu Lab Printers | Bambu Lab Wiki