As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: L3 DOOR EMERGENCY SLIDE EXTERIOR LIGHT FAULT. PERFORMED BUILT IN TEST EQUIPMENT TEST OF EMERGENCY POWER SUPPLY UNIT, FAULTED L3 DOOR BATTERY, PER AMM 33-51-00. REMOVED AND REPLACED BATTERY PER AMM 33-51-38. CHECKED OK.