What was found
FLT#8644, FLL- JFK. (AIRCRAFT PERFORMED AN AIR TURNBACK TO FLL) ' ON ROTATION SYS 1 DID NOT PRESSURIZE, EXCESSIVE CABIN ALTITUDE SWAPPED TO SYS 2 SYS 2 WORKS OK; REF LOG PAGE 3400198, ITEM # 2 (PER AWM 21-31-06 SHEET 1 FOUND NO GROUND DISCRETE INPUT FOR CPC#1 PIN 5B AB OPEN, FURTHER T/S FOUND CONNECTOR 255VC PIN 1 BENT RESULTING IN NO CONTINUITY TO GROUND. FROM AIRCOND/RAM AIR (4HZ) S.W. PIN D2 TO CONNECTOR 2433VC PIN K CONTINUITY TO GROUND IS .6 OHMS CK GOOD. REQUIRES REPLACEMENT OF PIN OR CONNECTOR 255VC FOR FIX.) FOR ADDITIONAL INFO. REPLACED PIN 1 AT 255VC PANEL 95VU IN REF TO ESPM 20-35-45 AND FOUND CONTINUITY BETWEEN GROUND AND PRESS CONT 11HL PIN 5B TO BE 1.2 OHMS AFTER REPAIR. PERFORMED OPS AND CALIBRATION OF CPC 1 AND 2 IN REF TO A321 AMM 21-31-34. OPS ARE GOOD ON THE GROUND. NO ECAM MSGS ARE DISPLAYED AT THIS TIME.