As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAV SMOKE LIGHT ON EICAS AND OVERHEAD WITH LAV K HORN SOUNDING. INSPECTED LAV K WITH NO SMOKE VISIBLE AND SMELL LIGHT AND HORN WENT OUT AFTER 5 MINS. PLACARD LAV "K" SMOKE DETECTOR INOP, LAV "K" PLACARD INOPERATIVE PER MEL 26-26-3K, COMPLIED WITH DDP. UNABLE TO WORK DUE TO TIME AND ACFT MOVE. C/N 114071153 LAV K SMOKE DETECTOR REPLACED AND OPERATION CHECKED NORMAL IAW AMM 26-14-00.