there are an information or guide to learn how to calibrate my printer? Since various 6" mono printers (at least Creality LD-002H, Elegoo Mars Mono) are basically the same, with moderately branded firmware from Chitu, you can refer to the pdf manuals and youtube instruction vidos (calibrating Z axis, calibrating chitubox with test prints) from various other printers if you get stuck, e.g.