Disklavier

My Mark IV uses these same Blue & Green RCA connectors on an expansion PC type card slot in the "I/O center".  They each have heavy duty RCA cables connected to them which I traced back to the "Central Signal Processor" interface located on the other side of the piano (or under the tribble end of the piano.)  The "Advance Operating Manual" doesn't exactly say what Green & Blue jacks are used for other than "To Piano" and that it accepts the cords from the "Central Signal Processor".  (It says cords not chords)  Perhaps they are on the DKC-850 for connectivity to a Mark IV -- such as an I/O center replacement.   But given that they are heavy duty and shielded I believe it's some sort of signal - maybe timing information from the keyboard used for recording playback.

-Ken

--- In disklavier@yahoogroups.com, "kassey22000" <kassey22000@...> wrote:
>
> Does anyone happen to know what the 2 RCA jacks (Blue and Green) next to the cable connector on the back of the DKC850 are used for?  Manual and support website don't seem to have any references.  I'm looking for another potential audio-output option and hope these are extra audio out jacks.
> Thanks in advance.
>