After changing the power supply, the engraving appears ghosting

[Technician]

1. Mechanical problems:
   The belt loosens and loses teeth, the synchronization wheel slips, and the bearing is loose.
2. Eliminate optical path problems:
   The focusing mirror is loose and the light path is not correct.
3. Motor drive problem:
   If there is a lost step phenomenon, it is necessary to set the gap compensation parameters of different speeds through the software.
4. There is a problem with the power supply:
   There is a problem with the power response, which is caused by the delay of turning off or turning on the light.