Canon MF720 Series, Service Manual, Page: 260 / 327

Error Codes
Whenever an error occurs, firstly turn off and on the power to check if the error is persistent.(Controller-related errors tend to
recover by power-OFF/ON.)
* : Supported by model with FAX only
E Code Detail Code Item Description
E000 0000 Title Error in temperature rising of Fixing Assembly
Description Temperature of the Fixing Assembly did not reach a certain temperature within the specified
period of time.
Remedy 1. Check the connector connection between the Fixing Assembly and the DC Controller
PCB.
2. Replace the Fixing Assembly.
3. Replace the DC Controller PCB.
E001 0000 Title Abnormal high temperature of Fixing Assembly
Description It was detected that the temperature of the Fixing Assembly was abnormally high.
Remedy 1. Check the connector between the Fixing Assembly and the DC Controller PCB.
2. Replace the Fixing Assembly.
3. Replace the DC Controller PCB.
E001 0001 Title Abnormal high temperature of Fixing Assembly (caused by Sub Thermistor)
Description It was detected that the temperature of the Sub Thermistor of the Fixing Assembly was ab-
normally high.
Remedy 1. Check the connector between the Fixing Assembly and the DC Controller PCB.
2. Replace the Fixing Assembly.
3. Replace the DC Controller PCB.
E003 0000 Title Abnormal low temperature of Fixing Assembly
Description It was detected that the temperature of the Fixing Assembly was abnormally low.
Remedy 1. Check the connector between the Fixing Assembly and the DC Controller PCB.
2. Replace the Fixing Assembly.
3. Replace the DC Controller PCB.
E003 0001 Title Abnormal low temperature of Fixing Assembly (caused by Sub Thermistor)
Description It was detected that the temperature of the Sub Thermistor of the Fixing Assembly was ab-
normally low.
Remedy 1. Check the connector between the Fixing Assembly and the DC Controller PCB.
2. Replace the Fixing Assembly.
3. Replace the DC Controller PCB.
E004 0000 Title Error in fixing power supply drive circuit
Description The zero cross signal was not detected for the specified period of time or more.
Remedy 1. Check the connector connection between the Fixing Assembly and the DC Controller
PCB.
2. Replace the Fixing Assembly.
3. Replace the DC Controller PCB.
E012 0000 Title Revolution of the ITB Motor did not reach the specified value
Description The cycle of the ITB Motor speed detection signal did not become the specified cycle since
the ITB Motor started to be driven.
Remedy 1. Check the connector between the ITB Motor and the DC Controller PCB.
2. Replace the ITB Motor.
3. Replace the DC Controller PCB.
E012 0001 Title Revolution of the ITB Motor was out of the specified range
Description After the cycle of the ITB Motor speed detection signal became the specified cycle once, it
deviated from the specified cycle.
Remedy 1. Check the connector between the ITB Motor and the DC Controller PCB.
2. Replace the ITB Motor.
3. Replace the DC Controller PCB.
E014 0000 Title Error in startup of Fixing Motor
Description Revolution of the Fixing Motor did not reach the specified value.
Remedy 1. Check the connector between the ITB Motor and the DC Controller PCB.
2. Replace the ITB Motor.
3. Replace the DC Controller PCB.
7. Error/Jam/Alarm
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