• Code: SC544
• Description: Fusing (hot roller) low temperature Type: 1 - Description - The main control board notifies the SCU when the fusing (hot roller) thermistor outputs an analog value corresponding to 90°C after it had previously reached the ready temperature. - Detection Timing - Always
• Causes: • Fusing (hot roller) thermistor • Main control board SP-Log: 7-402-5

• Code: SC545
• Description: Fusing (hot roller) ready temperature abnormal Type: 1 - Description - The main control board notifies the SCU when the fusing (hot roller) thermistor outputs an analog value corresponding to a temperature lower than the ready temperature for 6 minutes or more after it had previously reached the ready temperature. - Detection Timing - Always
• Causes: • Fusing (hot roller) thermistor • Main control board SP-Log: 7-402-5

• Code: SC547
• Description: Fusing (hot roller) temperature does not increase Type: 1 - Description - The main control board notifies the SCU when the output of the fusing (hot roller) thermistor increases by no more than 3°C for a minute during warming up after the power switch is turned on. - Detection Timing - When the power switch is turned on
• Causes: • Fusing (hot roller) thermistor • Main control board SP-Log: 7-402-5

• Code: SC551
• Description: Pressure roller thermistor open Type: 1 - Description - When the pressure roller thermistor outputs an analog value corresponding to 0°C, the main control board determines that the pressure roller thermistor is broken and notifies the SCU of it. - Detection Timing - Always
• Causes: • Pressure roller thermistor • Main control board SP-Log: 7-402-5

• Code: SC552
• Description: Pressure roller warm-up error Type: 1 - Description - The main control board notifies the SCU when the pressure roller thermistor does not output an analog value corresponding to the ready temperature within 12 minutes after the power switch is turned on. - Detection Timing - When the power switch is turned on
• Causes: • Pressure roller thermistor • Main control board SP-Log: 7-402-5

• Code: SC553
• Description: Pressure roller overheat Type: 1 - Description - When the pressure roller thermistor outputs an analog value corresponding to 200°C, the main control board judges an overheat and notifies the SCU of this. - Detection Timing - Always
• Causes: • Pressure roller thermistor • Main control board SP-Log: 7-402-5

• Code: SC554
• Description: Pressure roller low temperature Type: 1 - Description - The main control board notifies the SCU when the pressure roller thermistor outputs an analog value corresponding to 70°C after it had already reached the ready temperature. - Detection Timing - At all times
• Causes: • Pressure roller thermistor • Main control board SP-Log: 7-402-5

• Code: SC555
• Description: Pressure roller ready temperature abnormal Type: 1 - Description - The main control board notifies the SCU when the pressure roller thermistor outputs an analog value corresponding to a temperature lower than the ready temperature for 6 minutes or more after it had already reached the ready temperature. - Detection Timing - At all times
• Causes: • Pressure roller thermistor • Main control board SP-Log: 7-402-5