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Thread: I need the schematic or SERVICE MANUAL of Sharp 903sh

  1. #1
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    Question I need the schematic or SERVICE MANUAL of Sharp 903sh

    I am currently working on the Yamaha MA-7 chip, but there is a lack of information. I have been looking for it for a long time without any progress. I learned that Sharp 903sh has this chip built in. And dozens of models since 804sh and 903sh have used this audio chip.
    Who can help me.

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    This is just the User Manual, it does not contain any schematics

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    Ok

    10char

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    Ok

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  6. #6
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    Hey not sure if it's of help but the MA7 is apparently based heavily on the MA5.

    Here's a datasheet for MA5: https://cdn.datasheetspdf.com/pdf-do...765_Yamaha.pdf

    Some more info (MA-7 aka YMU786): https://keim.hatenablog.com/entry/20080827/p1

    Phones with MA-7

    "MA-7 (YMU786) MA-5に3Dサウンドなど(同時発音数128"

    But yea.. hard to find info.

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