As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: #2 ENGINE DRIVEN GENERATOR SOURCE OFF INDICATION CAME ON DURING TAKEOFF AT 20 KNOTS RESULTING IN AN ABORTED TAKEOFF. REPLACED # 2 ENGINE DRIVEN IDG AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 24-11-11-400-801