• Code: 6730
• Description: Abnormally high IGBT1 temperature (IHPWB)
• Causes: Defective IH PWB. Defective cooling fan motor.
• Remedy: Defective IH PWB. Replace the IH PWB and check for correct operation.
  Defective cooling fan motor. Replace the IH fan motor.

• Code: 6740
• Description: Abnormally high IGBT2 temperature (IHPWB)
• Causes: Defective IH PWB. Defective cooling fan motor
• Remedy: Defective IH PWB. Replace the IH PWB and check for correct operation.
  Defective cooling fan motor. Replace the IH fan motor.

• Code: 6750
• Description: Abnormally output overcurrent (IHPWB)
• Causes: Defective IH PWB. Defective fuser unit
• Remedy: Defective IH PWB. Replace the IH PWB and check for correct operation.
  Defective fuser unit. Replace the fuser unit.

• Code: 6760
• Description: Abnormally AC input overcurrent (IHPWB)
• Causes: Defective IH PWB.
• Remedy: Defective IH PWB. Replace the IH PWB and check for correct operation.

• Code: 6770
• Description: Abnormally low electric power (IHPWB)
• Causes: Defective connector cable or poor contact in the connector. Defective IH 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.
  Defective IH PWB. Replace the IH PWB and check for correct operation.

• Code: 6930
• Description: IH related cooling fan motor error
  The alarm signal was detected for 5 seconds continuously during operation.
• Causes: Defective connector cable or poor contact in the connector.
• 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. Container / IH coil fan motor and relay connector * and engine PWB(YC21) *:Insertion of the above-mentioned relay connector is checked. IH fan motor and engine PWB(YC24)
  Defective cooling fan motor. Replace the container / IH coil fan motor or the IH fan motor.
  Defective PWB. Replace the engine PWB and check for correct operation.

• Code: 6950
• Description: IH CPU communication error
  A communication error is detected 3 times in succession.
• Causes: Defective connector cable or poor contact in the connector. Defective IH PWB. 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.
  Defective IH PWB. Replace the IH PWB and check for correct operation.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 6990
• Description: Fuser unit type mismatch problem
  Absence of the fuser unit is detected.
• Causes: Defective IH PWB.
• Remedy: Defective IH PWB. Replace the IH PWB and check for correct operation.