9-6) Button Scan And Display Circuit - Samsung RB1855SW Service Manual

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Circuit Descriptions

9-6) Button Scan and Display Circuit

If the IC04 decorder(KID65783AD) receives signals from MLCOM pins(34-6), an output signal per
2 miliseconds comes out from Grid#1-#7. A step DC12 volt peak will be generated periodically as
follows:
31

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