Fixing Error Codes on Ineo 160/1673/213

Fixing error codes are displayed on the panel of the machine whenever a problem is detected in fixing temperature. Either high or low temperature could be a cause of errors given below:
C0500: Warm- Up failure
C0501: Warm-Failure (Bizhub 211/220 only)
C0510: Abnormally low fusing temperature
C0511: Abnormally low fusing temperature
C0520: Abnormally high fusing temperature
C0521: Abnormally high fusing temperature
  1. Check that the fusing roller heater lamp and sub heater lamp turn ON when the power switch is turned ON.
  2.  Check the resistance of fusing roller thermostat. Thermostat needs to be replaced if its resistance is infinity.
How to reset:
To reset the codes turn ON the power switch while pressing down the Stop key. Before resetting these codes make sure that faulty parts have been replaced or properly repaired. Failure to do that may cause fire or other damages.

C6400/6000 on Kyocera Mita KM1500

Almost all kyocera Mita products display error message C6XXX whenever a problem is detected in fixing temperature or fixing unit. C6000/C6200/C6050 and C6400 all are related to fixing unit. Service manual states that possible causes are as below:
C6000 & C6050
  • Poor contact in the thermistor connector terminal.
  • Thermistor installed incorrectly.
  • Thermal cutout triggered.
  • Heater lamp installed incorrectly.
  • Broken heater wire.
  • Shored thermistor
  • Broken heater control circuit on the power supply board.
  • Poor contact in the connector terminals. Check the connection of connectors CY7 on the engine board and CN2 on the power supply board.
  • Defective power supply board.
  • Defective engine board.
Sometimes only an unstable power source is the cause of these error messages.
How to reset:
  1. Press the Stop/clear (red) key, Start (green) key and the left copy exposure key in the order presented and hold them down.
  2. Release the keys and than press Stop/clear key again (within few seconds).
  3. Using the copy exposure adjustment keys or the Zoom +/- keys go to mode U163.
  4. Press the start key.
  5. If prompted (I'm not sure) confirm that you want to reset the fixing data.
  6. Here you go. 
Related Article:
How to reset fixing errors on other KM Copiers