| 76-80 | The LED print head assembly overheats. | |
| 76-81 | Image data quantity sent by the mechanism control PWB is not the image data quantity received by the LED print head assembly. | |
| 76-81 | A LED print head fault has been detected. | |
| 76-81 | LED print head assembly not installed. | |
| 7D-A8 | Temperature/humidity sensor detects that temperature inside the printer is outside the specified range. | |
| 7D-A9 | Temperature/humidity sensor detects that humidity inside the printer is outside the specified range. | |
| 7D-AB | The fuse on the sensor circuit PWB has blown. | |
| 7D-AC | Mechanism control PWB internal control error. | |
| 7D-AD | Input output PWB to sensor circuit PWB communication error. | |
| 7D-AE | Fuse on the motor driver PWB has blown. | |
| 7D-AF | Fuse on the input output PWB has blown. | |
| 7D-F4 | Input output PWB to motor driver PWB communications error. | |
| 7D-F5 | Unit power control PWB does not reply. | |
| 7D-F5 | Unit power control PWB is not connected. | |
| 7D-F5 | Fuser cooling blower is not controlled. | |
| 7D-F5 | A communication error occurs on the unit power control PWB. | |
| 8C-01 | Mechanism control PWB RAM error. | |
| 8C-02 | Dual port RAM error. | |
| 8C-B4 | An error has occurred in the non volatile RAM on the mechanism control PWB during power-on. | |
| 8D-B1 | Mechanism control PWB detects a video data parity error. | |
| 8D-B2 | Mechanism control PWB detects a video data empty error. | |
| 8D-B3 | Mechanism control PWB detects a video data overrun error. | |
| 8D-B5 | Mechanism control PWB detects a head video data error. | |
| 8D-B6 | Mechanism control PWB detects a FIFO data remaining error. | |
| 90-51 | Pre-charger current or voltage falls outside the specified range after pre-charger on. | |
| 90-58 | Grid voltage calculated by the process control is above the specified value | |
| 90-59 | Grid voltage calculated by the process control is below the specified value | |
| 90-8C | Pre-charger 2 cleaner home position sensor is not actuated within the pre-set time after pre-charger 2 cleaner motor start. | |
| 90-8C | Pre-charger 2 cleaner home position sensor remains actuated beyond the pre-set time after pre-charger 2 cleaner motor start. | |
| 90-8D | Pre-charger 2 cleaner motor over current detected. | |
| 90-8E | Pre-charger 1 cleaner home position sensor is not actuated within the pre-set time after pre-charger 1 cleaner motor start. | |
| 90-8E | Pre-charger 1 cleaner home position sensor remains actuated beyond the pre-set time after pre-charger 1 cleaner motor start. | |
| 90-8F | Pre-charger 1 cleaner motor over current detected. | |
| 91-50 | The corona current or wire voltage is outside the specified range after transfer charger on. | |
| 91-8A | Transfer charger cleaner home position switch is not actuated within the pre-set time after transfer charger cleaner motor start. | |
| 91-8A | Transfer charger cleaner home position switch remains actuated beyond the pre-set time after transfer charger cleaner motor start. | |
| 91-8B | Transfer charger cleaner motor over current detected. | |
| 94-53 | Mechanism control PWB detects abnormal developer bias output. | |
| 95-56 | Difference between drum surface potential sensors 1 and 2 output voltage and target voltage exceeds the specified value | |
| 95-57 | Difference between the output voltages of the drum surface potential sensors exceeds the specified value. |
