At pin 6 of J107 (power for motor driver board), i have 22V, HOWEVER, at pin5 of motor driver board i only have 9 volts.... by the diagram in the manual p3-15 this wire should be a direct link. Even when i unplug from the motor board, it still reads 9V (ie: to check there is not something on the motor board pulling down voltage).  I also see in the manual, that Flasher 17 joins the power wire connection between J107 on power driver board and the motor driver board - maybe this is part f the issue?