What was found
AN ELECTRICAL BURNING ODOR WAS OBSERVED IN THE CABIN AND COCKPIT WHILE EN ROUTE FROM EWR TO SFO. THE ODOR WAS ACCOMPANIED BY AN EQUIP COOLING FAN OVERHEAT LIGHT ILLUMINATING. THE AIRCRAFT WAS DIVERTED TO DEN WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE NR 1 EQUIP COOLING FAN AT FAULT. THE COOLING FAN WAS REMOVED AND REPLACED IAW MM 21-58-06 AND OPERATIONAL CHECKS WERE GOOD. THE E&E COMPARTMENT WAS CHECKED FOR BURNED WIRING AND NONE WAS FOUND.