As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW CREW REPORTED LT GENERATOR FAILED & AUXILIARY POWER UNIT WOULD NOT START. EMERGENCY DECLARED FLIGHT RETURNED DFW LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED LT GENERATOR. SYSTEM GROUND CHECKED NORMAL OPERATION CLOSED.