The function corresponding to this fault is "motion accuracy calibration", which calibrates the motion error of the toolhead mechanical motion system, including distortion and hysteresis, through the absolute positioning of the visual encoder, so as to compensate and correct such motion errors in the actual printing process. During the calibration process, it is crucial for the toolhead camera to recognize the pattern on the visual encoder. If the pattern on the visual encoder cannot be accurately recognized, this error may occur.
Please refer to: Motion accuracy calibration
Common Scenarios Causing the Error:
Incorrect placement of the visual encoder
Severe deformation or contamination of the encoder board
Dirty/obstructed Toolhead Camera lens
Excessive ambient light causing image overexposure
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