No communication, RX LED is lit solid on signal converter; Failed Controller

Potential Symptoms

  • RX light on signal converter is solid, but signal converter passes loopback test.
  • No communications to display via direct serial, but loopback passes on cabling at display.

Environment

  • Product Family: Message Displays
  • Product: MDC controlled Galaxy displays
  • Component: MDC Controller
  • Control System:

Cause

  • Defective serial input on MDC

Resolution

  • Replace MDC.

Also see: DD3530234- Galaxy, direct serial, No communication, RX LED is lit solid on signal converter (Damaged cable)

KB ID: DD3556625


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