What was found
DURING CLIMB BETWEEN FL 190 AND 250, CREW REPORTED THREE UNCOMMANDED RUDDER INPUTS. EACH INPUT INCREASED IN SEVERITY. ACFT ON AUTOPILOT 1, APP 320 KIAS, VMC CONDITION, SMOOTH RIDE CONDITIONS. FLIGHT CONTROLS NORMAL WITH A/P DISCONNECTED & A/P 2 ENGAGED. NO ECAM/STS MESSAGES. MX ACCOMPLISHED WIRING CHECKS BETWEEN FAC NR 1 AND YAW DAMPER NR 1, AND FAC NR 2 AND YAW DAMPER NR 2. NO DEFECTS NOTED. R & R NR 1 YAW DAMPER SERVO ACTUATOR IAW AMM 27-61-51-400-001A. PERFORMED SATISFACTORY OPS CHECK OF YAW DAMPER AND RUDDER SERVO CONTROLS. ACCOMPLISHED CAT CERTIFICATION TEST IAW J/C 26T0002201. TEST FLIGHT SATISFACTORY.