What was found
ON CLIMB OUT EN ROUTE, PRIOR TO FLAP RETRACTION, RECD ECAM WARNING FOR GREEN HYD SYS FAILURE IND LOW GREEN PRESS AND QTY. FOLLOWED ECAM PROCED AND TURNED OFF NR 1 ENG DRIVEN HYD PUMP (EDP), PWR TRANS UNIT (PTU), TURNED EDP BACK ON AND PRESS RETURNED TO NML, TURNED ON PTU AND ECAM WARNING FOR GREEN HYD SYS FAILURE REAPPEARED. RE-ACCOMPLISHED PROCEDURES, TURNED EDP BACK ON. MAINT TROUBLESHOT, OPERATIONAL TEST OF GREEN HYD SYS WAS GOOD. RAN ENG AND OPERATED THE PTU, PTU WAS GOOD IN BOTH DIRECTIONS, ALL PRESS AND QTY INDICATED NORMAL. AS PRECAUTION REMOVED AND REPLACED SIGNAL DATA ACQUISITION UNIT (SDAC), OPERATIONAL CHECK WAS GOOD.