4.  Troubleshooting 
4.1  Common Issues 
Power indicator does not illuminate 
◼  The power cord is not properly connected. 
◼  The power switch is closed. 
◼  Plug the power cord in printer and outlet. 
◼  Switch the printer on. 
◼  The printer carriage is open. 
◼  Close the print carriage. 
◼  Check if interface cable is well connected. 
◼  Check if wireless or Bluetooth device is well 
connected. 
◼  The port in the Windows driver is not correct. 
◼  Re-connect cable to interface or change a new cable. 
◼  Reset the wireless device setting. 
◼  Select the correct printer port in the driver. 
◼  Clean the printhead. 
◼  Printhead’s harness connector is not well connected 
with printhead. Turn off the printer and plug the 
connector again. 
◼  Check your program if there is a command - PRINT at 
the end of the file and there must have CRLF at the 
end of each command line. 
◼  Label or ribbon is loaded not correctly. 
◼  Use wrong type paper or ribbon 
◼  Follow the instructions in loading the media and ribbon. 
◼  Ribbon and media are not compatible. 
◼  Verify the ribbon-inked side. 
◼  The print density setting is incorrect. 
◼  Running out of ribbon. 
◼  The ribbon is installed incorrectly. 
◼  Supply a new ribbon roll. 
◼  Refer to user’s manual to reinstall the ribbon. 
◼  Running out of label. 
◼  The label is installed incorrectly. 
◼  Gap/black mark sensor is not calibrated. 
◼  Supply a new label roll. 
◼  Refer to user’s manual to reinstall the label roll. 
◼  Calibrate the gap/black mark sensor. 
◼  Gap/black mark sensor is not set properly. 
◼  Make sure label size is set properly. 
◼  Labels may be stuck inside the printer 
mechanism. 
◼  Calibrate the media sensor. 
◼  Set media size correctly. 
◼  Remove the stuck label inside the printer mechanism. 
◼  Peel function is enabled. 
◼  If peeler module is installed, please remove the label. 
◼  If there is no peeler module in front of the printer, 
please switch off the printer and install it. 
◼  Check if the connector is plugging correctly. 
Can’t downloading the file to 
memory (FLASH / DRAM/CARD) 
◼  The space of memory is full. 
◼  Delete unused files in the memory.