As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DEPARTURE DC EMERGENCY BUS CAUTION MESSAGE CAME ON AND OFF REPEATEDLY. COMPLIED WITH QRH. NO ASSOCIATED FAULT MESSAGES FOR SYSTEMS ASSOCIATED WITH DC EMERGENCY BUS APU BATTERY DIRECT FEED FLOWLINE REMAINED GREEN. REMOVED AND REPLACED DC EMERGENCY DIODE AND RELATED HARDWARE, OPS CHECK OF DC ELECTRICAL POWER NORMAL REF WDM 24-60-00. (M)