What is the part number of the Main Control board for ATV71HD22N4?

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Issue:
ATV71HD22N4: Need to replace the Main Control board.

Product Line:
ATV71

Environment:
ATV71HO75N4, ATV71HU15N4, ATV71HU22N4, ATV71HU30N4, ATV71HU40N4, ATV71HU55N4, ATV71HU75N4, ATV71HD11N4, ATV71HD15N4, ATV71HD18N4, ATV71HD22N4, ATV71HD30N4, ATV71HD37N4, ATV71HD45N4, ATV71HD55N4, ATV71HD75N4

Cause:
Need the Main Control board part number.

Resolution:
The Main Control board part number for these drive is VX4A71100Y