What do the different LED status light colors mean on the Samsung Xpress M202x printer?

A green LED that is on means the machine is on-line and ready to use, while a blinking green LED indicates the machine is receiving or printing data. A solid red LED means the cover is open, there is no paper in the tray, or the machine has stopped due to a major error. An orange LED that is on indicates a paper jam has occurred, and a blinking orange LED means a minor error has occurred that the machine is waiting to have cleared. (Page 55)