Did you get a reply about this problem? I have the same problem with my two month old 10W A5 engraver. The fan is on but no laser. I have only done a few small wood jobs. I have already had to replace a stepper motor and can't justify buying a replacement laser that costs 3/4 of what the machine was worth to start with.
I'm very sad about this. My friends are getting married and we had plans to make them some personailised coathangers for their day.
@Anha60de For others that are following this thread: The DXF was correct and loaded correctly in T2Laser so the issue must be with the machine hardware. The generated G-code shows exactly 20mm moves.
I took the machine apart yesterday and the left hand extrusion was a bit rough along the rails. So I went over with a bit of wire wool. I also put the belt fastnersI found on thingiverse at https://www.thingiverse.com/thing:2564431
These helped me tighten the belts again with the same tension each side.
All is now working great and I am getting some really good engraving results.
Thanks for the help.
@Uğur-ŞİRİN The laser module you have (top picture) has the driver already, you don't need the other board you show. That is the same thing but a different design.
On your laser module the driver has a TTL input, you can connect the S-pin from Mana board to it and the +/- (other 2 pins on the laser connector) to the input.
@Mustafaa-Mustafa Sorry, I don't understand. If the Nano does not appear in Device Manager as a COM port then it is damaged beyond repair.
If you are trying to reload the boot loader, search for the instructions, you need to setup one as a programmer and then connect it's output pins to the other Nano's ISP port for programming.
