The error could be caused by any of the following :
 

• Check that the USB cable is connected correctly.
   
• Check that the DK Roll is installed correctly. If not, remove and reinstall it.
   
• Check that there is enough roll left.
   
• Check that the DK Roll compartment cover is closed.
   
• Check if a print error or transmission error occurs.  If so, turn off the QL-printer and turn it on again. If the problem persists, your machine may require service. Please click "Contact Us" in the top right corner of this page to contact Brother Customer Service.