Trouble Shooting
| Steps | Cause | Solution | Parts |
| 1 | Scratches or dirt on the drum unit. | Replace the drum unit. <Video Link> | Drum unit (015-0333-22) |
| 2 | Scratches or dirt on the fuser. | Replace the fuser. | Fuser (002-B209-0-SP) |
| 3 | Power supply malfunctioned (charger and grid output instability is too low). | Please check the power supply <Video Link> | Power supply (002-B117-0-SP) |
