As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PAST EEP, ETOPS, SOURCE OFF LIGHT GEN 1 ILLUMINATED; FOLLOWED QRH. ACFT GROUNDED. PERFORMED NR 1 ENGINE IDG UNSCHEDULED. REMOVEL FOR CAUSE IAW AMM 24-11-11. NO CONTAMINANTS IN FILTERS. R & R NR 1 ENG IDG IAW AMM 24-11-11. OPS & LEAK CHECK GOOD.