This is the error: “C0204 – Tray 2 Elevator Failure – The Lift-Up Sensor is not blocked even after the lapse of a given period of time after the lifting motion has been started.”
Here is how to fix this error:
Shut down the printer from the main button.
Start the printer while pressing the Utility/Counter button.
Press [Trouble Reset].
When you see that the display is saying “ok”, shut down the printer and start it again after around 10 seconds.