As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM - EICAS MESSAGE LT GEN OFF DISPLAYED. LEFT GEN OFF LIGHT ILLUMINATED. CONDITION RETURNED TO NORMAL AFTER GEN RESET. PERFORMED BITE PER FIM 24-20-00 FOUND IDG FAULT. REMOVED AND REPLACED NR 1 IDG PER MM 24-11-01 RAN ENGINE & DID LEAK/OPS CHECK. NO LEAKS NOTED AND ENGINE RUN OPS CHECK GOOD, ALSO RAN BOTH ENGINES PER AMM 71-00-00 CHECK GOOD.