As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE FWD LAVATORY LIGHT ANNUNCIATOR DURING APPROACH. RAN QRH, LIGHT AND WARNING EXTINGUISHED WITH CIRCUIT BREAKER 1B PULLED IAW QRH. DO NOT BELIEVE FAN IS ACTUALLY BAD. PERFORMED AN OPS TEST OF THE FWD LAVATORY SMOKE DETECTOR IAW AMM 26-16-00. CHECKED THE GALLEY & LAVATORY FAN AND GALLEY & LAVATORY LIGHTING. NO DEFECTS. ALL SYSTEMS NORMAL, RESET THE CIRCUIT BREAKER.