Usually there are two situations:
- After the data cable is connected, if the computer fails to recognize the serial port of the engraving machine, it means that the CH340 driver file has not been installed;
- Install the CH340 driver file, if the string still cannot be displayed, try to replace the USB data cable or the computer interface;
Use manual or computer control to move the Y-axis separately, and observe whether the movement is stuck; check whether the motor rotation is stuck; whether the motor cable is tightly inserted; try to replace the engraving software;
Check all belts and adjust tension;
Whether the transmission parts are stuck or loose, adjust the eccentric nut around the transmission position;
The screws that fix the laser components are locked tightly, otherwise it will cause shaking.
Check whether it is connected to the machine;
Check if there is an error code on the console after connecting to the software, if so, you need to re-flash the firmware;
Try disconnecting and reconnecting;
Check whether the TF card is inserted into the machine;
Check whether the file naming is complicated or too long;