What was found
EXTRACT FAN FAULT ECAM MESSAGE APPEARED IN CRUISE. FOLLOWED FM PROCEDURE, PUT EXTRACT FAN IN OVRD. ACRID SMELL REMAINS THROUGHOUT CABIN, IAW CREW. FAN IS BAD. COMPLIED WITH MEL. (FILTER, PCN 565-2066 AND 10HQ AEVC PCN 482-9059). REPLACED EXHAUST FAN AND BOTH AVIONICS FILTERS, ALL CHECKED NORMAL.