Gently pull the printhead connection wire to check whether the printhead connection wire is loose. If the printhead cable is loose, use the S1.5 allen key to tighten the two screws holding the printhead cable.
(1) Use S2.5 allen key to remove the two screws securing the bottom plate.
(2) Unplug the cooling fan cable and remove the bottom plate.
Gently pull the motherboard end printhead connection cable, check whether the print ead connection cable is loose.
If the preceding steps do not resolve the problem, replace the printhead cable with a new one. For specific replacement guidelines, refer to: Kobra 3 Combo Print Head Cable Replacement Guidelines
If there is no problem with the printhead connection line, the accelerometer is abnormal, please replace the printhead module. Please refer to: Kobra 3 Combo Print Head Module Replacement Guide