630 Chair Power Toroid Test and Repair

Supply voltage (115 VAC) is supplied to the Power Toroid thru J9 on the Power Supply PC Board. The Power Toroid then supplies +25 VAC and -25 VAC thru the Blue wires at J10 to power the Power Supply PC Board, with the Red wire used as the common. The Power Toroid supplies 115 VAC voltage thru the Black and White wires at J10 to power the chair receptacles (J13).