As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 AC GENERATOR CAUTION ILLUMINATED ON TAKEOFF ROLL. ATTEMPTED THE RESET PROCEDURE IAW CHECKLIST AND RESET FAILED. REMOVED FROM SERVICE. INTERROGATED EPCU AND FOUND CODE 28. REMOVED AND REPLACED THE NR 2 AC GCU FOR TROUBLESHOOTING IAW AMM 24-21-06-000-801, AND 24-21-06-400-801. DID NOT FIX PROBLEM. REMOVED AND REPLACED THE NR 2 AC GENERATOR IAW TC 6242101. OPS AND LEAK CHECKED GOOD. NO DEFECTS NOTED. RETURNED TO SERVICE.