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1.Remove four screws
Note：Gently open the cover.
2.Disconnect all the wires on the board, remove the four small screws.
3.Remove four long screws, four small screws, and the old board.
4.Install the new board, tighten the four small screws to fix.
5.After completion, install the four long screws.
Note: Do not break the wires when inserting.
Note: There are 8 positions for connecting wires.
