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Thread: APX6000 expansion board question

  1. #1
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    Default APX6000 expansion board question

    Anyone every seen MHLN5978B expansion board? It's NLA on MOL - but is called full featured expansion board with apps. I'm trying to determine if it really has BT on it. Radio does not have BT in the flash yet. In service mode it reports a bluetooth option board, no serial number for the option board, but has a bluetooth address. SW on the option board is R03. Says the option board is full featured. This is a factory radio with a blue dot on the front.


  2. #2
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    So I am going to answer my own question, after some further research.

    MHLN5978B is the part # for the basic board, with nothing on it. It becomes a NNTN8177A after it is loaded with ADP and BT, which is what I have in this case. When this is placed in a radio with BT turned on in the flash, the board seems to work. Not sure if the "A" revision speaker module (NHN7016A) has the correct antenna hardware, but we will see later on.