The ZT111 printer may display ribbon errors when:
The ribbon is not loaded in the proper orientation
The ribbon is out and needs to be replaced
The ribbon is damaged
In the image below, you can see the proper orientation of the ribbon. Make sure the printhead lever is completely down and perpendicular to the ground.
If the ribbon is out or damaged you will see a static red light (status), yellow light (pause), another static red light (network), and a blinking red light (network).
Open the printhead.
Carefully remove the ribbon return spool.
Get your replacement ribbon spool and guide the ribbon around the printhead in the proper orientation.
Ensure the ribbon is pulled evenly onto the ribbon return spool by using a gentle clockwise motion.
Close the printhead firmly.
Note: If you don't completely close the printhead, you may see a "head open error" on your ZT111 printer, and the calibration will not complete. The printhead should click twice when closed properly and the printhead assembly lever should be perpendicular to the ground.