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Why on the PS-10877-BR system do you only use two ribbon cables between the driver board (PS-10877) and the display board (PS-12146)?


Only some digits are working on the display. Everything else seems to be working normally. 


When troubleshooting a PS-10877 game with a malfunctioning MPU, the test button on the PinScore display may not work to light all the segments.  This is because of the nature of the display circuitry on PS-10877 games.  If the game does not boot, then the displays will not work, even with the test button pressed.


A PS-12232-P16DE system on my Data East Back to the Future, everything is backwards. For example, the word 'FOOTBALL' scrolls across as 'LLABTOOF'.


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