What was found
AIRCRAFT WAS GROUNDED: MAINTENANCE REPORTS EMERGENCY LIGHT INOP AT OVERHEAD CEILING ROW 18,& 26, SEAT ROW 22ABC, AFT L/H LAV BOTH RED LIGHT OUT , R2 & L2 DOORS & L1 DOOR PARTITION RED LIGHT. MAINTENANCE REMOVED & REPLACED AFT GALLEY POWER SUPPLY CABIN EMERGENCY LIGHT AND EMERGENCY LIGHT BATTERY. OPS TEST GOOD IAW AMM 33-51-38. OPS TEST ALL EMERGENCY LIGHT ARE WORKING.