| Symptom | Likely Cause | Quick Fix | |---------|--------------|-----------| | | AC cord unplugged or breaker tripped | Verify outlet voltage; reseat the IEC plug. | | Front panel shows “FAULT” | OCP, over‑temperature, or video lock error | Open GUI → Diagnostics → identify the flagged module; reduce load or improve cooling. | | Video signal loss on SDI‑OUT‑B | Bad cable or mismatched format | Test with a known‑good cable; check input format matches SDI spec (e.g., 3G‑SDI vs 12G‑SDI). | | Unit restarts spontaneously | Firmware bug or unstable power source | Update firmware; connect to a UPS with clean sine wave output. | | CLI commands not responding | SSH session timed out or user lacks admin rights | Re‑login; ensure the account is in the “admin” group. | | SNMP polls return “no‑such‑object” | MIB not loaded or wrong community string | Load the correct MIB file; verify community string matches the device config. |
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