As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER LANDING AND STARTING APU NR 2 ENGINE GENERATOR TRIPPED OFF & GEN OFF BUS LIGHT ILLUMINATED. GENERATOR RESET ON FIRST ATTEMPT. OPS CHECK OF APU GEN NR 1 AND NR 2 ENG GENERATORS GOOD. BITE CHECK OF ELECTRICAL SYS SHOWS NO FAULT HISTORY ON P 5 OVERHEAD. BITE CHECK OF GCU'S GOOD NO FAULTS. ALL SYS OPS NORMAL. REF MM 24 21 00 700 803. GROUND FUNCTIONAL CHECK SUCCESSFUL NO PRIOR HISTORY.