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#1745729 - 08/16/21 08:55 AM VSR-880 Service Notes?
rhk77 Offline
Space Cadet

Registered: 07/31/21
Posts: 1

the Roland VM3100pro internally has a separate board for the R-Bus DB25 connector, attached with a 15pin JST-PH connector to the Effects board.

While bear's R-Bus-Adat-Interface (thanks @bear) is attaching to the DB25 connector, I built an interface board, that exactly replaces the internal R-Bus Board and connects to the effects board with the same 15pin JST connector. So it is a complete replacement.
The advantage of this is, that I do not need to invert the signals, as the inverter is located at the R-Bus-DB25-Board.

So, what I want to do now, is to replace the DB25 R-Bus also in a VSR-880 to have a "light pipe-only" connection instead of R-Bus between the VM3100 and the VSR.

Unfortunately it seams, that the R-Bus connector in the VSR-880 is attached in the Main-Board and so it is a little bit harder to integrate there. I do not have a service notes for the VSR-880 and so I do not know the schematics. But at least I could have figured out, which IC is the inverter for the R-Bus... but maybe there is a better way for doing it?

Does anyone have a Service Notes for the VSR-880?

Thanks a lot,

#1746768 - 08/21/21 04:49 PM Re: VSR-880 Service Notes? [Re: rhk77]
bear Offline

Registered: 10/25/99
Posts: 6496
Loc: abq,nm,usa
I have it on my cloud drive - PM me your email and I will send you a download link
#1850732 - 05/27/23 12:39 AM Re: VSR-880 Service Notes? [Re: bear]
sweetbeats Offline
Space Cadet

Registered: 05/26/23
Posts: 16
Greetings, all. I realize this is an old thread, but I too am trying to find Service Notes for the VSR-880. Canít find them anywhere and Roland is of no help.
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