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

Symptoms

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

Environment

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

Cause

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

Resolution

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

KB ID: DD3503543


Fill out my online form.
DISCLAIMER: Use of this content may void the equipment warranty, please read this DISCLAIMER prior to performing any service of the equipment.