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| Item | Anomalies | Possible Reasons | Solution |
|---|---|---|---|
| 1 | No power supply (indicator light off) | Damaged power cord or defective switch | Replace power cord or switch |
| 2 | Screen does not display (light on) | 12V power supply or Control board failure | Replace 12V supply or control panel |
| 3 | No self-check action | Communication failure / Motherboard / Servo failure | Replace comm line, motherboard, or servo controller |
| 4 | Safety valve disconnect prompt | Outrigger knob not locked / Sensor damaged | Tighten knob or replace induction board |
| 5 | Bluetooth pairing fails | Low battery / Controller damage | Replace battery or Bluetooth components |
| 6 | Camera image failure | Setting error / Camera damaged | Check settings or replace camera |





