The Kawai & Teisco Analog Synths Group

i'm repairing the control board (SYN-45, which is the mounted on the
top panel on the left side of the keyboard, with the two displays on
it). if anyone could furnish me with either a schematic/ciruit diagram
of this board, or even better a photo of the board (showing the
component side, of course!) that would be swell. more specifically,
i'm looking for the I2, I3, I4, and I5 microchip placement. thanks!!!