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ErrorLib — Industrial Fault Code Library

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380

BROKEN LED(EXT)

Fanuc · Series 0i-D/0i Mate-D Maintenance

What does 380 mean?

This alarm on Fanuc Series 0i-D/0i Mate-D indicates an LED disconnection within a separate (external) detector connected via an SDU (Separate Detector Interface Unit). This points to an internal failure of the detector's optical components.

Common Causes

  • Internal failure of the external detector's LED component.
  • Degradation of the external detector's optical system.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Visually inspect the external detector for any signs of physical damage or impact.

  2. 2

    Verify that the detector's power supply is active and within the specified voltage range.

  3. 3

    Check the cable connecting the external detector to the SDU for damage or loose connections.

  4. 4

    If all external checks are clear and the alarm persists, replace the external detector unit.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

361ABNORMAL PHASE DATA(INT)364SOFT PHASE ALARM(INT)365BROKEN LED(INT)
Source: Fanuc Series 0i-D/0i Mate-D Maintenance
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