What was found
APPROX 5 TO 10 MINUTES AFTER T/O, FLIGHT ATTENDANT AND CREW NOTICED ACRID SMELL COMING FROM AREA OF CLOSET BEHIND CAPT'S SEAT. REMOVED ALL ITEMS FROM CLOSET, CHECKED BEHIND PANEL COVERING AVIONICS BOXES, ALL FELT NORMAL TEMPERATURE. SMELL PERSISTED FOR 5-10 MINUTES LOCALIZED IN CLOSET AREA. TROUBLESHOT TO FAILED NR 2 IRU FAN BELOW GALLEY FLOOR. REMOVED GALLEY FLOORING REMOVED AND REPLACED NR 2 IRU FAN, REINSTALLED NR 2 IRU AND FLOORING. RESET IRU POSITION. OPS CHECKS GOOD IAW F2000 MM PROC 34-907.