| 20-01 | Scuff pinch rollers paper jam sensor detects a paper jam during printing or paper exhausting. | |
| 21-01 | Paper floating sensor detects a paper jam during printing or paper exhausting. | |
| 21-03 | The paper off tractor sensor front and/or the paper off tractor sensor rear detects the paper holes are not aligned with the tractor pins. | |
| 21-04 | This error arrives during the duplex alignment phase (pinfeed and pinless) when the alignment page stops between the mark sensor unit and the transfer point of the downstream printer. The points that follow may cause this fault to occur: | |
| 21-05 | The sensors that follow detect paper end during printing or paper exhausting: | |
| 21-06 | The paper movement encoder sensor in the registration guide unit, detects a paper jam. | |
| 22-20 | Fuser thermal sensor detects that fuser unit temperature is higher than specified. | |
| 24-22 | Flash current detection coil 1 detects that the flash lamp does not light when triggered. | |
| 24-23 | Flash current detection coil 2 detects that the flash lamp does not light when triggered. | |
| 24-24 | Flash current detection coil 3 detects that the flash lamp does not light when triggered. | |
| 24-25 | Flash current detection coil 4 detects that the flash lamp does not light when triggered. | |
| 25-28 | Charging of flash condenser 1 is not completed within the correct time. | |
| 25-2D | Charging of flash condenser 2 is not completed within the correct time. | |
| 26-29 | The mechanism control PWB detects that flash lamp lighting interval exceeds the specified range. | |
| 27-2A | A flash lamp lights when the tractors drive motor is off. | |
| 31-02 | The sensors that follow detect that an abnormal page seam is detected on the paper: | |
| 31-02 | The sensors that follow detect that an abnormal page seam is detected on the paper: | |
| 31-08 | When duplex printing or using the pinless paper, an end of form sensor detects that the paper has run out. | |
| 32-01 | The stacker error sensor detects a stack error. | |
| 60-70 | The developer magnetic roller rotation sensor detects an abnormal rotation of the magnetic conveyor roller after magnetic rollers motor start. | |
| 60-71 | Developer paddle roller rotation sensor detects abnormal rotation of the paddle roller after mixing motor start. | |
| 60-73 | The recovery roller rotation sensor detects abnormal rotation of the recovery roller after mixing motor start. | |
| 60-74 | Developer temperature sensor detects that the developer temperature is too high. | |
| 60-7A | Developer magnetic rollers motor fault detected. | |
| 60-7B | Developer mixing motor fault detected. | |
| 62-69 | The toner concentration sensor detects high density of toner. | |
| 62-6A | The toner concentration sensor detects low density of toner. | |
| 63-92 | Inverter for toner blower fault detected. | |
| 63-9A | Toner blower rotation switch detects abnormal rotation of the toner blower. | |
| 64-68 | Toner concentration sensor output is outside the normal range. | |
| 65-64 | Cleaner brush rotation sensor detects abnormal rotation of the cleaner brush after drum motor start. | |
| 65-65 | Drum discharging LED current is outside the specified range. | |
| 68-55 | Drum motor fault detected. | |
| 6A-01 | Printing compartment inner door interlock switch detects the printing compartment inner door is open in standby. | |
| 6A-02 | Printing compartment inner door interlock switch detects the printing compartment inner door open during printing or paper exhausting. | |
| 6A-10 | Printing compartment inner door interlock switch detects the printing compartment inner door open during developer replacement procedure. | |
| 6A-5C | Drum cover set switch detects that the drum cover is open when the printing compartment inner door is closed. | |
| 6A-FE | An emergency stop has been called in a duplex line. | |
| 6C-6B | Toner supply motor rotation sensor detects abnormal rotation of the toner supply motor after motor start. | |
| 6C-6C | Toner agitator motor rotation sensor detects abnormal rotation of the toner agitation motor after the toner supply motor or toner agitation motor start. | |
| 6C-6D | Toner shutter motor over current detected. | |
| 6C-6E | Toner hopper shutter closed switch is not actuated within the correct time after toner shutter motor start during initialization. | |
| 6C-6E | Toner hopper shutter open switch is not actuated within the correct time after toner shutter motor start during toner replacement. | |
| 6C-6E | Toner hopper shutter closed switch is not actuated within the correct time after toner shutter motor start during toner replacement. | |
| 6C-6F | Toner cartridge vibration motor over current detected. | |
| 6C-78 | Toner supply motor over current detected. | |
| 6C-79 | Toner agitation motor over current detected. | |
| 6C-7C | Toner hopper set switch detects that the toner hopper is not set. | |
| 6F-5D | Drum heater thermistor does not detect the specified temperature within the correct time after drum heater on. | |
| 6F-5E | Drum heater thermistor detects temperature above the specified value. | |
| 6F-5F | Drum heater thermistor is disconnected. |
