Need a Input schematic from a Synthex v2.8 PCB

morning
especially the 5 Pin Keyboard Connector (not the 4 Pin !!!!) is interesting for me ....
anybody can help me out...
i know the pcb is outdated
Thanx you all
especially the 5 Pin Keyboard Connector (not the 4 Pin !!!!) is interesting for me ....
anybody can help me out...
i know the pcb is outdated

Thanx you all