As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AVIONICS SMOKE LIGHT ILLUMINATED. ECAM SHOWED AVIONICS SMOKE PROCEDURE. NO SMOKE OBSERVED. RETURNED TO DEPARTURE. AVIONICS SMOKE LIGHT HAD EXTINGUISHED ON TAXI IN, PREFORMED ADJ/TEST AVIONICS COMPARTMENT SMOKE DETECTION SYSTEM IAW MM 26-15-00-05. NO DISCRFEPANCIES NOTED. PREFORMED GVI OF AVIONICS COMPARTMENT, NO WATER FOUND, SUSPECT SMOKE DETECTOR. REMOVED AND REPLACED THE SMOKE DETECTOR 13WA IAW MM 26-15-12-04. OK FOR SERVICE.