• 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 IH.
  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 IH. 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 IH.
  Defective engine PWB.
• Remedy: Defective fuser thermistor 2. Replace the fuser unit.
  Defective fuser IH. Replace the fuser unit.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 6320
• Description: Abnormally high fuser thermistor 3 temperature
  Fuser thermistor 3 detects a temperature higher than 240°C/464°F for 1 s.
• Causes: Deformed connector pin.
  Defective triac.
  Shorted fuser thermistor 3.
  Defective engine PWB.
• Remedy: Shorted fuser thermistor 3. Replace the fuser unit.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 6330
• Description: Broken fuser thermistor 3 wire
  Input from fuser thermistor 3 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 3 wire.
  Fuser thermostat triggered.
  Defective fuser IH.
  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 3 wire. Replace the fuser unit.
  Fuser thermostat triggered. Replace the fuser unit.
  Defective fuser IH. Replace the fuser unit.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 6520
• Description: Abnormally high fuser thermistor 4 temperature
  Fuser thermistor 4 detects a temperature higher than 240C/464F for 1 s.
• Causes: Deformed connector pin.
  Defective triac.
  Shorted fuser thermistor 4.
  Defective engine PWB
• Remedy: Shorted fuser thermistor 4. Replace the fuser unit.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 6530
• Description: Broken fuser thermistor 4 wire
  Input from fuser thermistor 4 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 4 wire.
  Fuser thermostat triggered.
  Defective fuser IH.
  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 4 wire. Replace the fuser unit.
  Fuser thermostat triggered. Replace the fuser unit.
  Defective fuser IH. Replace the fuser unit.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 6600
• Description: Fuser belt rotation error
  A belt rotating pulse is not received for 1 second. (Engine CPU)
• Causes: Defective connector cable or poor contact in the connector.
  Defective fuser belt sensor.
  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)
  Defective fuser belt sensor. Replace the fuser belt sensor.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 6610
• Description: Fuser release motor error
  When the fuser release motor is driven, the fuser release sensor does not turn on/off for 5 s.
• Causes: Defective connector cable or poor contact in the connector.
  Defective drive transmission system of motor.
  Defective fuser release motor.
  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)
  Defective drive transmission system of motor. Check if the gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
  Defective fuser release motor. Replace the fuser release motor.
  Defective engine PWB. Replace the engine PWB and check for correct operation.