As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: WHILE PERFORMING J/C 26L00005005, SYSTEM TEST THE EMERGENCY LIGHT SHOW MESSAGE NS SW 190RH/ DIR1(101RH). MAINTENANCE REPLACED FORWARD GALLEY EMERGENCY POWER SUPPLY UNIT (AALA202606085182) PER AMM 33-51-38-000-001-A AND FWD GALLEY EMERGENCY POWER SUPPLY UNIT BATTERY (AALA202606093664) PER AMM 33-51-38-000-002-A.