The paper light on the printer has two functions.

The main function is to indicate when the device does not have paper. If the paper light is flashing, check to ensure there is paper in the unit.

The second and less obvious function is network connection indication.

This light will flash during the initial boot of the device and will stop once the network connection is established.

This along with printed error message can be a good indicator that the device is or is not connected successfully to your network.  

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