What was found
FUMES OR SMOKE IN CABIN, PNEUMATIC POWER SUPPLIED BY THE NR 1 ENGINE, MILD ENGINE EXHAUST ODOR IN COCKPIT DURING DESCENT AND LANDING. BOTH BLEEDS AND PACKS ON. OPERATED BOTH ENGINE BLEEDS ONE AT A TIME, BOTH PACKS, NO FUMES OR SMOKE ODORS PRESENT. OPERATED THE WING AND ENGINE ANTI-ICE, NO ODORS OR FUMES. OPERATED APU AND BOTH PACKS SLIGHT ODOR FOR ABOUT 1 MINUTE. CHECKED APU BLEED DUCT FOR OIL AND APU INLET FOR OIL AND DEICE FLUID, NONE FOUND. CHECKED CABIN LIGHTING AND GALLEYS FOR ELECTRICAL, ODORS NONE FOUND IAW AMM 05-51-26.