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RiddledTV's DK Logic Probe Data Compilation - CPU Board
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This document was created as a troubleshooting aid for repairing Donkey Kong pcb.
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It is not provided by Nintendo.
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Measurements were taken using an inexpensive Elenco LP-560 logic probe, while the game was running in attract mode
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Proceed at your own risk. I am not responsible for any damage to your persons or property.
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Data is organized by Row and Column. Please start on CPU Main Page, and click the link to your chip location.
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Don't blindly replace a chip because you observe different results than what is provided here. Seek to understand what is causing the behavior.
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If an input does not match an expected behavior, it might be caused by another chip upstream of it.
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likewise, if an output does not match expected behavior, it could also be caused by another chip downstream.
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DK Schematics are available here
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These measurements were recorded at one point in time during attract mode cycle. Some values may change if taken at a different time in the cycle.
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The matching spreadsheet for the DK Video Board is located HERE
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If you think any information here might be an error, please notify dk@riddledtv.com
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Unfortunately, I am not able to provide free tech support for your specific situation.
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