'''2.''' Using two fingers, one each hand, softly pull the main board's control-1 connector tongue until it's open. Insert the flat ribbon cable coming from the control board (top part). Do it straight, without bending or twisting it in any way.
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'''2.''' Using two fingers, one each hand, softly pull the main board's control-1 connector tongue until it's open. Insert the flat ribbon cable coming from the control board (top part). Do it straight, without bending or twisting it in any way, so the blue side is downside.