How do I fix 'Toner Low,' 'Replace Toner,' or 'Toner Ended' messages?
Reinstall the cartridge following the Installation Guide to ensure correct installation. Then turn off the printer, open the top cover until it locks, and use a dry, lint-free cloth to clean the LED head windows. Close the top cover and turn the printer back on. Do not touch the LED head window directly with your hands.
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