As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 147 - TUS TO ONT - FLIGHT CREW ENCOUNTER SMOKE DETECTION INDICATION DURING CLIMB OUT AT 2000FT. EMERGENCY WAS DECLARED AND AIRCRAFT RETURNED TO BLOCK SATISFACTORY. MX REMOVED AND REPLACED THE SMOKE DETECTOR SENSOR, INSPECTED PANELS AND FOUND THEM IN GOOD CONDITION, RAN ENGINES AND OPERATIONALLY CHECKED THE BLEED SYSTEM WITH NO RELEVANT DEFECTS NOTED. ALL SYSTEMS CHECKED GOOD. A/C WAS RETURNED FOR SERVICE IN AIRWORTHY CONDITIONS.