@Anatoly Dear Anatoly,
This simple configurations i know, problem is not the port. ill notice problem is my mana ardiono board.
did know how to Full reset firmware ? i think it might be recovered, i don't know what is actually happened. when i power On lacer it always ON note moving X,Y,Z moters. please help me..
RST ROM is how to firmware reset.
You not select PORT as I show in picture. When you not select PORT and give power to laser board laser go full power.
Problem is you not select port to connect laser to computer.