Datamax- O’Neil I-Class Mark II I-4212e Error Code Reflective Mode Cannot Calibrate
Consistently low sensor readings were detected.
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Ensure that the reflective mark is inserted facedown in the media sensor during calibration; also ensure that the reflective mark is made of carbon based ink; and, that the sensor is free of debris. retry calibration. If the problem persists, try Advanced Entry Calibration.