Yamaha DGX-640 Manual
Manuals and User Guides for this Yamaha item
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Midi Reference 
4 pages
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Usb Device
Hi,
How do I playback from a USB device on the DGX 640?
Pls Help, The Lcd Screen Is All Blue? Our Dgx-640 Is Less Than Week Of Use.
suddenly the LCD screen is all blue, can't see anything when pressing tune/style etc. LCD is all blu...
Backgrounds List
Is there a chart of backgrounds for the DGX 640 to download & print? If so, please email me the ...
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