As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: FAULT MESSAGE FOR MID RIGHT EMERGENCY POWER SUPPLY UNIT DISPLAYED DURING SYSTEM TEST. MAINTENANCE REPLACED THE FOLLOWING ITEMS: #1 CIDS DIRECTOR PER AMM 23-73-34. (AALA202605104355), THE CABIN ASSIGNMENT MODULE PER AMM 23-73-19. (AALA202605113655) AND THE BATTERY FOR THE MID RIGHT EMERGENCY POWER SUPPLY UNIT PER AMM 33-51-38. (AALA202605119007) A SATISFACTORY OPERATIONAL CHECK OF THE EMERGENCY LIGHTING SYSTEM WAS ACCOMPLISHED WITH NO FAULTS NOTED.