Trouble Shooting
| Step | Cause | Solution | Parts |
| 1 | Adapter defective. | Replace the adapter. | Adapter (005-3147-9-SP) |
| 2 | UI broad defective. | Replace the UI board UIA239. | UI board (004-3269-9-SP) |
| 3 | Main broad defective. | Replace the main board MBA861. | Main board AD8120U (004-3364-9-SP) AD8120P (004-3364A-9-SP) AD8120UN (004-3364F-9-SP) |
