What was found
SFO - FLT 962 - EN ROUTE DFW/SFO DURING CRUISE, SLIGHT ODOR OF SMOKE FOLLOWED BY FWD EQUIPMENT EXHAUST FAN MESSAGE AFTER WHICH ODOR DISSIPATED. AIRCRAFT PROCEEDED TO SFO, LANDING WITHOUT INCIDENT. PLACARDED FWD EQUIPMENT EXHAUST FAN INOPERATIVE. SUBSEQUENTLY, REPLACED FWD EQUIPMENT EXHAUST FAN AT JFK/20. SYSTEM GROUND CHECKED, NORMAL OPERATION, WITH NO SMOKE NOTED. (X)