No communication to display through 56K modem; Failed modem

Potential Symptoms

  • Modem gives handshake but display does not communicate.
  • Carrier Detect Light is lit solid with all connections except power disconnected from modem.
  • Carrier Detect light not lighting at all but can hear the computer side modem squelching; sign side not picking up.

Environment

  • Product Family: Message Displays
  • Product: Galaxy
  • Component: MDC or M2 controller, 56K sign Modem
  • Control system: Venus 1500

Cause

  • Failed sign modem.

Resolution

  • Replace sign modem.

KB ID: DD2010278


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