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Installed new toner but Kyocera Device Not Recognizing New Toner Bottle

Models TA-xxx2/xxx3/xxx4 and MZxxx1(ci/i) Series

If you have installed a new toner container and the Kyocera device does not recognize it, this is usually caused by a cover or door that is not fully closed.

Error Message: “The toner container is not properly installed”



Common Cause

Kyocera devices will not detect a newly installed toner container unless all covers and doors are securely closed. If another cover or door was previously left slightly open, changing the toner can trigger a sensor fault, resulting in this message.

How the Warning Appears

Kyocera devices may cycle warning messages on the display:
(These messages may rotate, so watch the screen carefully)

  • Modern models (LCD screen): Alerts appear in the upper-left corner, such as: “Main Unit Right Cover 1 is open”

  • Older models: Alerts appear in the lower-left corner, such as: “Main unit cover is open”


Step 1:  Open the Right-Side Door

  • Use the handle on the right side of the device.
  • This handle unlatches the internal locks for the cover.

Step 2: Securely Close the Door

  • Place your hand near the upper-middle area of the door (where the dots or grip indicators are located).
  • Firmly close the door until you feel it fully latch

Step 3: Verify Proper Closure

  • Make sure the door is not slightly ajar.
  • Ensure the handle is fully returned to the closed position.
  • Check that no other covers (front, rear, or side) are open.

Step 4: Confirm Recognition

  • Once all covers are closed, the device should automatically detect the toner container and clear the error.