Engraving machine don't carved faults and solving method. 1. Computer problems,replace or repair marking machine. 2. Main board broken,replace the main board. 3. Motor driver broken,replace the motor driver. 4. Software problem, reset software. Engraving depth is shallow faults and solution. 1. The light path is partial,adjust the light path to point 2. The light path lens is dirty,clean it Engraving fault 　1., Check whether each part of the screw is loose. 　2.Check their path is correct. 　3. Check whether the file is too big is processed by the computer.