What was found
AVIONICS SMOKE ILLUMINATED. PERFORMED EMERGENCY ACTION ITEMS, WARNING LIGHT EXTINGUISHED AFTER 20 SECONDS. F/A SMELLED A GAS LIKE ODOR. DECLARED EMERGENCY. INSPECTED AVIONICS COMPARTMENT, FAN, AVIONICS LRU'S AND WIRING. NO DEFECTS NOTED. RAN ENGINES WITH CREW, BLEEDS ON, AVIONICS ON, ECS OPERATING, NO DEFECTS NOTED. NO SMOKE OR ODORS DETECTED. ACFT FOUND OK TO CONTINUE SERVICE. WORK IAW AMM 21-23-00,21-60-00, 26-13-00, 71-00-00.