Disconnecting the Cables in the Shaft Cap
Before you can disconnect the cables in the shaft cap, you must open the shaft cap (Opening the Shaft Cap).
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Using a #3 Phillips screwdriver, remove the two screws
that secure the power cables in the shaft cap.
You should keep these screws in a safe place, because you must use them when reconnecting the cables.
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Release the latch
and pull the connectors apart to disconnect the data cable.