Laser cutting machine coaxial misalignment- solutions：

1. Check if the nozzle is loose or if the cutting head has collided.

2. Check if the ceramic body is loose or damaged.

3. Check if the QBH is tightened.

4. Check if the centering mechanism is stuck; loosen both X and Y centering screws and re-center.

5. Check if the internal lenses are functioning properly.

6. Damaged centering assembly.