What was found
STARTING NR 2 ENGINE, FA COMPLAINED ABOUT A CAMPFIRE ODOR. WHEN SHUTTING DOWN ENGINES & SWITCHING TO APU AIR GOT A BLAST OF A CHEMICAL ODOR COMING FROM THE GASPERS. ACCOMPLISHED CONDITIONAL INSPECTION IAW MM 05-51-56. ACCOMPLISHED STEPS A(1) THRU STEP A(7). STEPS A(8) THRU STEPA(10) REQUIRE ACCOMPLISHMENT. C/W CONDITIONAL INSPECTION 05-51-56-200-801. PERFORMED FIM TASK 21-00-00-810-830 FOUND A & B HYDRAULIC RESEVOIRS OVERSERVICED. SERVICED RESEVOIRS IAW AMM 12-12-00. REMOVED AND REPLACED LT & RT HEPA FILTERS IAW AMM 21-25-01. NO FURTHER ODOR NOTED.