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Yamaha CLP-550 Service manual

Discussion in 'Electronic Repair' started by Tom Maguire, Sep 1, 2005.

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  1. Tom Maguire

    Tom Maguire Guest

    Hello all,

    Re: Yamaha CLP-550 Schematic

    Power supplies, power amp (via aux in), midi (as controller) OK, audio from the
    keyboard is very loud and distorted with volume at "0", louder yet if you turn
    it up. ~4vrms at processor board with loud note seems high. I need the D to A
    converter setup procedure and nominal levels as well as the schematics for the
    filter board and waveforms.

    Also, the power on with B1 pressed has no effect on the sound. Are there any
    other resets?


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