What was found
INSPECTION TYPE:N/A ATB - ON CLIMBOUT, SINGLE CHIME YELLOW CAUTION LIGHT. ECAM SHOWED TRIM TANK SYSTEM FAULT COULD NOT REMOVE TRIM TANK FUEL. RETURNED TO SDF. CAN NOT DUPLICATE, SYS CKS NORMAL. REPLACED TRIM TANK ISOLATION VALVE ACT 48QB AND RELAY 54QB FOR PRECAUTIONARY AMM 28-22-55-04. CKS NORMAL AMM 31-46-00-05. PLACARDS REMOVED.