Before checking, turn off the printer and disconnect the power supply to ensure safe operation.
Gently pull the print head connection wire to check whether the print head connection wire is loose. If the print head cable is loose, use the S1.5 allen key to tighten the two screws holding the print head cable.
1.Use a S2.5 allen key to remove the two screws securing the bottom plate.
2.Unplug the cooling fan cable and remove the bottom plate