What was found
EMERGENCY LIGHTING FAILS FOR 13WL UNIT FAULT. (A3NB-33-3-6012) O N HAECO LCQ NR 9294362 GENERATED BY V894373. REMOVED AND REPLACED BWL EPSU AND EPSU BETTERY IAW A320 AMM 33-5 1-38-000-001-A, 33-51-38-400-001-A, 33-51-38-000-002-A, 33-51-38 -400-002-A. OPS CHECKS GOOD IAW A320 AMM 33-51-00-710-001-A. PER FORMED BY V907990, INSP BY V061704. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1249114 SN OFF 4079 POWER SUPPLY, C OFF 31-3350-9-9001 4079 ON 31-3350-9-9001 4228