USB connection error: click on the Windows key, search “Device Manager.” Check if there is “USB Printing Support” under “Universal Serial Bus Controllers. If “USB Printing Support” is not found, follow instructions as follows:
Connect the printer to another USB port.
If the printer used to work with other PCs, the problem cause might be that the printer is not recognized due to the weak power of your current PC’s USB port. Use a powered USB hub to connect to the printer.
Reinstall the Nemonic printer driver. (If the problem insists after the reinstallation, delete it and reinstall it again.)
Change the cable if an extra one is available.
Printer driver error: Please delete your printer driver and reinstall. Don’t forget to remove your USB cable when you install the program.
If “USB Printing Support” is not found, follow instructions as follows: