Schematic request for Roland Jazz Chorus 40 JC 40

[Shandryderrick]

Hello anybody have the schematic of the Roland JV40
i mainly need the input part of the schematic.

The output of the amp keeps cutting out for a few seconds and comes back.
With my oscilloscope i follow it to the preamp at the input area.

there where i got stuck
so anybody have the schematic or ideas is much appreciate

[sugeda]

Roland JC-40