As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA- ON FLIGHT 2075 ON ENGINE START WHEN BLEEDS SELECTED ON, LIGHT SMOKE WAS OBSERVED ON FLIGHT DECK AND CABIN. ALL SMOKE CLEARED AFTER A FEW MINUTES, ALL OTHER INDICATIONS ARE NORMAL. GROUND RAN NR 1 AND NR 2 ENGINE BLEEDS. NO SMOKE NOTED. NO PARTS REPLACED. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.