When using the optical imager, it is found that the elements do not follow. What should I do at this time?

The solution to the problem that the elements of the optical imager do not follow:
1. In the tools menu --- change the direction of the grating ruler --- check the box of X and Y axis (if it is checked, it needs to be removed)
2. Correcting the scale again
3. Check whether the grating ruler counts incorrectly (for example, the 100 mm grating ruler is only 50 mm, the grating ruler is stuck, etc.)
4. Check whether the counting card in the computer is inserted in place
5.Is there reverse connection of grating ruler Y / x