Trouble Shooting
| Steps | Cause | Solution | Parts |
| 1 | The toner cartridge circuit board defective. | Replace the toner cartridge. <Video Link> | Toner (015-0292-22) |
| 2 | The drum contact board defective. | Replace the drum unit. <Video Link> | Drum unit (015-0333-22) |
| 3 | IFA133 board defective. | Replace the IFA133 board. | IFA133 board (004-3315-9-SP) |
| 4 | The main board defective. | Replace the main board MBA875 <Video Link> | Main board (004-3424C-9-SP) |
