• Code: 6020
• Description: Abnormally high fuser thermistor 1 temperature
  Fuser thermistor 1 detects a temperature higher than 240°C/464°F for 1 s.
• Causes: Deformed connector pin.
  Defective triac.
  Shorted fuser thermistor 1.
  Defective engine PWB.
• Remedy: Shorted fuser thermistor 1. Replace the fuser unit.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 6030
• Description: Broken fuser thermistor 2 wire A temperature of less than 30°C/86°F was observed at the fuser thermistor 2 when the temperature at the fuser thermistor 1 is greater than 70°C/158°F during warming up.
• Causes: Defective connector cable or poor contact in the connector.
  Deformed connector pin.
  Defective triac.
  Broken fuser thermistor 1 wire.
  Fuser thermostat triggered.
  Defective fuser heater.
  Defective engine PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Fuser unit and engine PWB (YC26)
  Broken fuser thermistor 1 wire. Replace the fuser unit.
  Fuser thermostat triggered. Replace the fuser unit.
  Defective fuser heater. Replace the fuser unit.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 6040
• Description: Fuser heater error
  Input from fuser thermistor 1 is abnormal value continuously for 1 s.
• Causes: Defective connector cable or poor contact in the connector.
  Deformed connector pin.
  Defective triac.
  Broken fuser thermistor 1 wire.
  Defective fuser heater.
  Defective engine PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Fuser unit and engine PWB (YC26)
  Broken fuser thermistor 1 wire. Replace the fuser unit.
  Defective fuser heater. Replace the fuser unit.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 6050
• Description: Abnormally low fuser thermistor 1 temperature
  Fuser thermistor 1 detects a temperature lower than 100°C/212°F for 1 s after warming up.
• Causes: Deformed connector pin.
  Defective triac.
  Defective fuser thermistor 1.
  Defective fuser heater.
  Defective engine PWB.
• Remedy: Defective fuser thermistor 1. Replace the fuser unit.
  Defective fuser heater. Replace the fuser unit.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 6200
• Description: Broken fuser edge heater wire
  A temperature of less than 90°C/194 °F was observed at the fuser thermistor when the temperature at the fuser thermistor 1 reached 160°C/ 320 °F after warming up.
• Causes: Defective connector cable or poor contact in the connector.
  Deformed connector pin.
  Defective triac.
  Fuser thermostat triggered.
  Defective fuser heater.
  Defective engine PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Power source PWB (YC3) and fuser IH PWB (YC1) Fuser IH PWB (YC4) and engine PWB (YC26)
  Fuser thermostat triggered. Replace the fuser unit.
  Defective fuser heater. Replace the fuser unit.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 6220
• Description: Abnormally high fuser thermistor 2 temperature
  Fuser thermistor 2 detects a temperature higher than 250°C/482°F for 1 s.
• Causes: Deformed connector pin.
  Defective triac.
  Shorted fuser thermistor 2.
  Defective engine PWB.
• Remedy: Shorted fuser thermistor 2. Replace the fuser unit.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 6230
• Description: Broken fuser thermistor 2 wire
  Input from fuser thermistor 2 is 992 or more (A/D value) continuously for 1 s.
• Causes: Defective connector cable or poor contact in the connector.
  Deformed connector pin.
  Defective triac.
  Broken fuser thermistor 2 wire.
  Fuser thermostat triggered.
  Defective fuser heater.
  Defective engine PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Fuser unit and engine PWB (YC26)
  Broken fuser thermistor 2 wire. Replace the fuser unit.
  Fuser thermostat triggered. Replace the fuser unit.
  Defective fuser heater. Replace the fuser unit.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 6250
• Description: Abnormally low fuser thermistor 2 temperature
  Fuser thermistor 2 detects a temperature lower than 50°C/ 122°F for 1 s after warming up.
• Causes: Deformed connector pin.
  Defective triac.
  Defective fuser thermistor 2.
  Defective fuser heater.
  Defective engine PWB.
• Remedy: Defective fuser thermistor 2. Replace the fuser unit.
  Defective fuser heater. Replace the fuser unit.
  Defective engine PWB. Replace the engine PWB and check for correct operation.