Problem with the Line Sensor. The printer has detected a failure to access Line Sensor EEPROM).
Try the following:
1. Switch the Power OFF from the back of the Printer and disconnect the Power cord. Reconnect the power cord and power On the Printer.
2. Perform the Carriage Test to troubleshoot the problem further.
3. Check the Line Sensor connections to the Carriage PCA.
4. Replace the Line Sensor.
5. If the System Error continues, replace the Carriage PCA.