1. First, confirm that the laser spot at the 3rd mirror is right following Unusual laser spot>>. Correct as needed.

2. If the laser spot is right at the 3rd mirror, check whether the focal lens is clean and whether is laser is emitted from the center of the nozzle. You can refer to the article How to align mirror 3>>.

3. If the pattern is ghosted along the X-axis, access "Scanning Offset Adjust" and adjust as needed. For details, see How to adjust scanning offset>>.