As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE SITTING AT GATE DURING BOARDING, RECIEVED SMOKE FWD LAV MASTER WARNING AND SMOKE ALARM FROM FWD LAV FA WAS ABLE TO SILENCE ALARM BUT RED LIGHT ON DETECTOR DID NOT RESET TO GREEN AND WILL NOT TEST PROPERLY. R & R THE FWD LAVATORY SMOKE DETECTOR IAW AMM 26-16-00. OPS CHECKED GOOD.