Cause The fixing temperature does not increase. � The main thermistor (TH1) has poor contact or an open circuit. � The fixing heater has an open circuit. � The thermal switch has an open circuit. � The DC controller PCB has a fault. � The image processor PCB has fault. The fixing temperature has increased abnormally. � The main thermistor (TH1) has a short circuit. � The fixing heater drive circuit has a fault. � The DC controller PCB has a fault. � The image processor PCB has a fault. The sub thermistor has detected overheating. � The main thermistor (TH) has a short circuit. � The fixing heater drive circuit has a fault. � The DC controller PCB has a fault. � The image processor PCB has a fault. The sub thermistor has an open circuit. � The sub thermistor has an open circuit. � The SSR has a fault. � The DC controller PCB has a fault. � The image processor PCB has a fault. The fixing temperature does not reach a specific value. � The thermistor (TH1, TH2) is not mounted properly, has poor contact, or has an open circuit. � The fixing heater has an open circuit or has a crack. � The fixing heater drive circuit has a fault. � The DC controller PCB has a fault. � The image processor PCB has a fault.
Description The main thermistor reading does not reach 55°C 45 sec after the main power switch has been turned on.
E001
0001
The output of the main thermistor has exceeded 220°C.
0002
The output of the sub thermistor has exceeded 235°C.
0003
E002
The output of the main thermistor satisfies the following: � 31 sec or more between 40°C and 75°C. � 23 sec or more between 75°C and 100°C � 19 sec or more between 100°C and 120°C � 19 sec or more between 120°C and 140°C � 19 sec or more between 140°C and 160°C. � 15 sec or more between 160°C and 170°C. � The thermistor (TH1, TH2) has detected 100°C or less after wait-up.
E003
The fixing temperature has dropped abnormally. � The thermistor (TH1, TH2) is not mounted properly, has poor contact, or has an open circuit. � The fixing heater has an open circuit or has a crack. � The fixing heater drive circuit has a fault. � The DC controller PCB has a fault. � The image processor PCB has a fault.
