Trouble Shooting
| Step | Cause | Solution | Parts |
| 1 | Fuser out sensor failed. | Replace the fuser out sensor . | Fuser out sensor (007-0070-0-SP) |
| 2 | Rear cover open sensor cable is loose. | Reconnect the cable or replace the rear cover open sensor. <Video Link> | Rear cover open sensor (004-2738-9-SP) |
| 3 | Main board defective. | Replace the main board MBA875 <Video Link> | Main board (004-3424C-9-SP) |
| 4 | IFA133 board defective. | Replace the IFA133. | IFA133 (004-3315-9-SP) |
