• Code: E000-0021
• Description: Within a temperature range of 50°C or lower as detected by the thermistor (TH1), the increase in temperature in 1 min is less than 3°C.
• Causes: The fixing heater is faulty. The SSR is faulty. The fixing thermistor is faulty. The thermistor (TH1, TH2) has an open circuit. The thermal switch (TP1) has turned on.

• Code: E000-0031
• Description: Within a temperature range between 50°C and 190°C as detected by the thermistor, the increase in temperature within 30 sec is less than 5°C.
• Causes: The fixing heater is faulty. The SSR is faulty. The fixing thermistor is faulty. The thermistor (TH1, TH2) has an open circuit. The thermal switch (TP1) has turned on.

• Code: E000-0040
• Description: During standby, the fixing temperature has dropped below 140°C.
• Causes: The fixing heater is faulty. The SSR is faulty. The fixing thermistor is faulty. The thermistor (TH1, TH2) has an open circuit. The thermal switch (TP1) has turned on.

• Code: E000-0050
• Description: During printing, the fixing temperature has dropped below 140°C.
• Causes: The fixing heater is faulty. The SSR is faulty. The fixing thermistor is faulty. The thermistor (TH1, TH2) has an open circuit. The thermal switch (TP1) has turned on.

• Code: E000-01
• Description: Main thermistor (TH1)
• Causes: The fixing heater is faulty. The SSR is faulty. The fixing thermistor is faulty. The thermistor (TH1, TH2) has an open circuit. The thermal switch (TP1) has turned on.

• Code: E000-02
• Description: Sub thermistor (TH2)
• Causes: The fixing heater is faulty. The SSR is faulty. The fixing thermistor is faulty. The thermistor (TH1, TH2) has an open circuit. The thermal switch (TP1) has turned on.

• Code: E000-03
• Description: The thermistor (TH1, TH2) has detected an open circuit.
• Causes: The fixing heater is faulty. The SSR is faulty. The fixing thermistor is faulty. The thermistor (TH1, TH2) has an open circuit. The thermal switch (TP1) has turned on.

• Code: E004-01
• Description: Main heater (H1)
  SSR1 for the fixing heater is ON even though the fixing heater (H1, H2) is OFF.
• Causes: The SSR1 is faulty.