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Trouble Shooting
| Step | Cause | Solution | Parts |
| 1 | Ultrasonic receiver broad defective. | Replace the ultrasonic receiver broad SBA277. | Ultrasonic receiver broad (004-3201-9-SP) |
| 2 | Ultrasonic transmitter broad defective. | Replace the ultrasonic transmitter broad SBA278. | Ultrasonic transmitter board (004-3202-9-SP) |
| 3 | Main broad defective. | Replace the main board MBA842. | Main board AD6090 (004-3272-9-SP) AD6090N (004-3272A-9-SP) |
