What was found
(CAN) CREW RECEIVED A HYD Y RESERVIR LOW LEVEL, ECAM DURING CRUISE. THE ECAM AND QRH WERE ACTIONED. ATC ADVISED, NO EMERGENCY DECLARED. TSM 29-13-00-810-A CARRIED OUT. FOUND NR 2 ENG THRUST REVERSER HYD CONT UNIT LEAKING. AMM 29-00-00-280-006-A01 CAVITATION OF ENGINE DRIVEN PUMP NOT REQUIRED DUE HYD Y RESERVOIR LOW LEVEL ECAM INSTRUCTIONS CARRIED OUT. "PTU & EDP NR 2 TURNED OFF" HYD CONTROL UNIT NR 2 ENG T/R REMOVED IAW AMM TASK 78-31-51-000-040-A. NR 2 ENG T/R HYD CONTROL UNIT INSTALLED IAW AMM 78-31-51-PB401. BLEED & FUNCTION CHECK SERVICEABLE AMM 78-30-00-710-040.