As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OUTBOARD LAVATORY AT DOOR 2R SMOKE DETECTOR TURNS ON WHEN POWER TO ACFT TURNED ON. HAPPENED A FEW TIMES, WAS ABLE TO RESET DETECTOR EACH TIME. FOUND MESH SCREEN DIRTY. CLEANED SCREEN IAW AMM 26-13-01. CYCLED ACFT POWER OFF & ON SEVERAL TIMES WITH NO SMOKE DETECTOR ALARM GOING OFF. HAD GREEN POWER INDICATOR ILLUMINATED EACH TIME.