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Re: Chorus chip on DX27s / PCB of DX100/DX27?

 

I saw in the Service Bulletin No.: E-396 (Date: May, 1987) that there is (at least) a firmware ROM update from V1.1 to 1.2

Yamaha_DX27_DX100_Service Bulletin No. E-396.pdf
Yamaha_DX27_DX100_Service Bulletin No. E-396.pdf

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