• Code: L4-34
• Description: LSU fan trouble
• Causes: The fan rotation signal is not detected in the specified time during operation of the LSU fan. Connection trouble of the connector and the harness. LSU fan trouble. Replace the MFPC PWB.
• Remedy: Use Sim6-2 to check the operation of the fan. Check connection of the connector and the harness. Replace the LSU fan. Replace the MFPC PWB.

• Code: L4-35
• Description: Fusing cooling fan trouble
• Causes: The fan operation signal is not detected within the specified time in the fusing cooling fan operation. Fusing cooling fan trouble. MFPC PWB trouble Connection trouble of the connector and the harness.
• Remedy: Use SIM6-2 to check the rotating operation of the fan. Replace the fusing cooling fan. Replace the MFPC PWB. Harness and connector connection trouble.

• Code: L4-40
• Description: Ozone fan motor 1 trouble
• Causes: Connection trouble of the connector and the harness between MPFPC PWB and the fan motor. MFPC PWB trouble FAN motor trouble The fan is not operated by other causes (the power is not supplied).
• Remedy: Check the fan motor operation with the SIM06-02. Check the harness and connector connection between the MFPC PWB and the fan motor. Replace the fan motor Replace the MFPC PWB.

• Code: L6-10
• Description: Polygon motor trouble
• Causes: The motor does not reach the specified rpm in specified time after starting rotation of the polygon motor. Polygon motor trouble. LSUcnt PWB trouble. Connection trouble of the connector and the harness.
• Remedy: Use SIM61-1 to check the operation of the polygon motor. Check connection of the connectors and the harness. Replace the polygon motor. Replace the LSU.

• Code: L8-02
• Description: Full wave signal error
• Causes: An abnormality in the full wave signal frequency is detected. (The frequency is detected as 80Hz or above, or 30Hz or less.) MFPC PWB trouble. Power unit trouble. Connection trouble of the connector and the harness. Power frequency, waveform abnormality.
• Remedy: Replace the MFPC PWB. Replace the power unit. Check connection of the connectors and the harness. Check the power waveform. a jam.

• Code: U1-01
• Description: Battery trouble
• Causes: 1) Battery life 2) Battery circuit abnormality
• Remedy: Check to confirm that the battery voltage is about 2.0V or above. Use SIM13 to cancel the trouble.

• Code: U2-00
• Description: MFPC EEPROM read/write error
• Causes: MFPC PWB EEPROM trouble. EEPROM socket contact trouble. MFP PWB trouble. Strong external noises.
• Remedy: Use SIM16 to cancel the error. Replace the MFP PWB EEPROM. Replace the MFP PWB. Check the power environment.

• Code: U2-05
• Description: Erroneous detection of account management data
• Causes: EEPROM is broken The device access error/connection error of EEPROM by the noise.
• Remedy: Cancel the error by SIM16