A Data Display Logic Card based sign is showing all LEDs on or a moving pattern


  • All LEDs on and remain on after boot up
  • Moving pattern on display


  • Data Display sign 
  • Logic Card, Controller Card, Logic 2001, PCB236/7


  • A dip switch in SW2 has inadvertently been switched to the on position.
  • A new card left the factory with a test pattern on.


  • Flip all switches on SW2 (the narrow black bank of switches) to the off position and reset the sign.

KB ID: DD3503543

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