Trouble shooting
| Step | Cause | Solution | Parts |
| 1 | Deskew sensor defective. | Replace deskew sensor. | Deskew sensor (008-0364-9-SP) |
| 2 | Deskew clutch defective. | Replace deskew clutch. | Deskew clutch (008-2036-9-SP) |
| 3 | Main board defective. | Relace main board MBA890. | Main board: AM7630i (004-3479A-9-SP) AM7640i (004-3479B-9-SP) AM5630i (004-3479C-9-SP) AM5640i (004-3479D-9-SP) |
