What was found
REF R OFFWING ESCAPE SLIDE R & R, UPON OPERATIONAL CHECK OF EMERGENCY LIGHTING SYS, RECEIVED EPSU INT LOAD AFT L MAINTENANCE MESSAGE / PER TSM 33-51-00-810-807-A, PERFORMED VISUAL CHECK OF CABIN EMERGENCY LIGHT SYSTEM, FOUND AFT LEFT CABIN DOOR OVERHEAD FWD LAMP INOP, RELAMPED & OPS CHECK OK W/ REF TO AIRBUS AMM 33-51-00-710-009 & TSM 33-51-00-810-807-A, INITIAL FAULT REMAINS. REPLACED AFT EPSU BATTERY (13WL), OPERATIONAL TEST OF EMERGENCY LIGHTING OK, SYSTEM OK W/ REF TO AMM 33-51-38 PB 401 & AMM 33-51-00-710-001."