Trouble Shooting
| Step | Cause | Solution | Parts |
| 1 | Develop unit defective. | Replace the develop unit. | Develop unit (015-0204-21) |
| 2 | Toner Cartridge defective. | Replace toner cartridge | Toner 6K (015-0296-21) 10K (015-0297-21) |
| 3 | Drum unit lifetime near end | Replace the drum unit. | Drum (015-0289-21) |
| 4 | HVPS (High-Voltage Power Supply) defective. | Replace HVPS. | HVPS (005-3141-9-SP) |
