My printer is showing an error code 'E12: Toner Cartridge Drive Error'. What does this mean?

The 'E12' error typically indicates a problem with the toner cartridge drive mechanism, preventing the printer from properly feeding the toner. Try removing and re-installing all toner cartridges, ensuring they click into place securely. Check for any obstructions or debris in the toner cartridge area. If the error persists, the drive motor or related components may be faulty, requiring professional repair.