As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE NR 2 GENERATOR OFF BUSS AND SOURCE OFF LIGHT ILLUMINATED, AFTER START, FLOW THE GEN LIGHTS CAME ON ABOUT 30 SECONDS AFTER THE GENERATOR WAS SELECTED. THE GENERATOR WOULD NOT COME BACK ON LINE THE APU GENERATOR POWERED THE BUSS NORMAL. ACFT GROUNDED. ISOLATED THE PROBLEM TO FAULTY IDG. REMOVED FILTER, CLEAN IAW AMM 24-11-11-80-801. IDG OIL DRAINED. REMOVED AND REPLACED THE NR 2 ENGINE IDG IAW AMM 24-11-11-400-801, OPS AND LEAK CHECKED GOOD.