Unknown cartridge message on Epson printers

Solution 1:
  • Remove all the cartridges.
  • Close the door.
  • Power off the printer.
  • Disconnect the power.
  • Disconnect the USB cable.
  • Wait a minut.
  • Connect the power cable
  • Switch on the printer.
  • Install the cartridges
  • Close the door
  • Power off.
  • Power on.
  • Connect the USB cable

Solution 2:
  • Vérifiy the chips of the cartridges: if necessary, clean the chips with a soft cloth.

Solution 3:
  • A cartridge is defective. Replace it.

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