What was found
CREW REPORTED ON TAXI FOR DEPARTURE A SMOKE SMELL IN CABIN AND COCKPIT. AIRCRAFT WAS EVACUATED. MAINTENANCE TROUBLESHOT, REMOVED, AND REPLACED THE NR 1 AIR CYCLE MACHINE. MAINTENANCE TROUBLESHOT, REMOVED, REPLACED, AND PERFORMED OPERATIONAL CHECKS USING AIRCRAFT MAINTENANCE MANUALS. AIRCRAFT WAS RELEASED FOR SERVICE.