Code :
- Code: C64
- Description: Fuser thermistor. Short or high fuser temperature
- Code: C72
- Description: 1256 drum thermistor open
- Code: C73
- Description: 1256 drum thermistor shorted
- Code: C74
- Description: CC50/1256 Developer unit fuse. May have to replace developer unit. Problem at setup
- Code: C74
- Description: 1257 Developer thermistor
- Code: C75
- Description: CC50/1256 Drum unit switch problem or drum setup problem
- Code: C75
- Description: 1257 developer thermistor
- Code: C76
- Description: May not apply to CC50 or 1256, except if metric. Waste toner full. Reset with simulation 78.