As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-04 CHECK OPERATIONAL TEST OF EMERGENCY LIGHTING SYSTEM FAILS BITE CK ON FWD FLT ATTENDANTS PANEL. MAINTENANCE REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT IAW A320 AMM TASKS 33-51-38-000-001 AND 38-400-001. OPERATIONAL CHECK GOOD IAW A320 AMM SUB TASK 33-51-32 740-050-A.