Line light sensor failing in peripherals

Potential Symptoms

  • Line light sensor is reporting back as failed.
  • Only sensor failing but the other photocells are passing

Environment

  • Product Family: Transportation
  • Product: VM-1020, VF-2420
  • Component: Line Light sensor, VFC
  • Control System: Vanguard

Cause

  • Sensor signal line is not plugged into the first module in the row.
  • Modules not gathering reading to the VFC

Resolution

  • Plug in signal line to the first module.
  • Check the module temperature and verify normal readings; remove the peripheral setting to resolve the error reading

KB ID: DD4156783


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