Trouble Shooting
| Step | Cause | Solution | Parts |
| 1 | UI broad defective. | Replace the UI board UIA251. <Video Link> | UI board (004-3410-9-SP) |
| 2 | Main broad defective. | Replace the Main board MBA1004. <Video Link> | Main board AD380 (004-3770-9-SP) AD380N (004-3770A-9-SP) AD380WN (004-3770B-9-SP) |
