As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKE OFF THE LT GENERATOR EICAS DISPLAYED DROPPED OFF LINE. THE A/C RETURNED TO THE GATE. MAINTENANCE REPORTED LEFT IDG REQUIRED SERVICING. MX COMPLETED IDG SERVICING ACCORDANCE, IAW AMM12-13-03. A/C DEPARTED SUCCESSFULLY WITH NO FURTHER INCIDENT.