As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD INFLIGHT T346/30JUL - FORWARD CENTER FUEL BOOST PUMP CIRCUIT BREAKER TRIPPED AFTER TAKEOFF. UNABLE TO BURN CENTER FUEL. RETURNED TO ORD AND LANDED WITHOUT INCIDENT. REPLACED FORWARD CENTER FUEL BOOST PUMP AND HARNESS. SYSTEM GROUND CHECKED NORMAL OPERATION.