Code :

Code: OF 99-9
Description: Multiple Wire Motor For use on DC motors that: • have 1 or 2 DC power inputs • are controlled by 2 or more drivers • have no DC COM connections for return power • have no specific feedback circuits
Remedy: Connect black meter lead to ground. Measure voltage at each pin of J2 (example only, refer to the actual Circuit Diagram for the correct voltage and connector designation). +24 VDC is measured at each pin. Y↓N→Disconnect J2. Measure voltage at P2-1 and P2-6 (refer to HVPS, +24V LVPS T10 Plug/Jack Locations ). +24 VDC is measured. Y↓N→Turn the machine Off then On. Measure voltage at P2-1 and P2-6. +24 VDC is measured. Y↓N→If an interlock circuit is present, check the interlock circuit. Repair as required. If the interlock circuit is good, replace the PWB. Check the motor wires for a short circuit. If the wires are good, replace the Motor. Check the motor wires for obvious damage. If the wires are good, replace the Motor. Replace the PWB.