What was found
EMERGENCY LIGHT TEST FAILED DURING SVC CHECK. ESCAPE SLIDE LIGHTING. FOUND THAT ALL FAULTS CLEARED EXCEPT AFT LT SLIDE WHEN SLIDE LIGHTS WERE DISCONNECTED. T/S PER A321 TSM 33-51-00-810-839A. REMOVED L4 DOOR PER CARD 2561-4003-LA. WHILE PREPARING NEW SLIDE FOR INSTALL FOUND IT TO BE BAD FROM STOCK. NO SLIDES AVAILABLE IN ATL.(069188) NEW SLIDE INSTALLED AT AFT LT DOOR PER CARD 2561-4003-LA. EMER. LT CK GOOD.