What was found
ON FLIGHT 3554 THE CREW REPORTED THAT DURING CLIMBOUT AT 13000 FT - EXTG BAGG LIGHT ILLUMINATED. FLIGHT ATTENDANT REPORTED ELECTRICAL SMOKE SMELL FROM THE LAV EXT FIRE BOTTLE WAS ACTIVATED. THE AIRCRAFT WAS REMOVED FROM SERVICE. INSPECTED FOR SIGNS OF ELECTRICAL SMOKE. PERFORMED ENGINES GROUND RUN UPS FOR ABOUT 20 MIN. DID NOT FIND ANY SIGNS OF ELECTRICAL SMOKE OR OTHER ABNORMALITIES. REMOVED AND REPLACED CARGO COMPT AFT SMOKE DETECTOR IAW EMB AMM 26-15-01. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.