What was found
ETOPS SIGNIFICANT SYSTEM, ATO - L GEN OFF EICAS ILLUMINATED ON T/O ROLL. PER FIM 24-20-00 PERFORMED BITE BPCU, ONE FOUL OVER VOLT TRIP GEN/WIRING. OPENED LEFT ENGINE REMOVED AND CLEAN CONNECTORS FROM IDG RUN ENG FOR 5 MIN. RESET L/GEN OPS CHECK NORMAL.