Need Help! Chevalier SURE FIRST DM422 servo circuit help needed

Chevalier SURE FIRST DM422 RAM-TYPE EDM

need wiring schematic for the Z axis servo spark gap controller .

Board says PCB2 257020 ver 1.2

board burned a trace and transistor . replaced both parts and still doesnt work , so need to see what else is wrong and wiring diagram would help a LOT

thanks

cody