As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON PRE-FLIGHT, LOWER CARGO SMOKE DETECTOR MAINTENANCE LIGHT ON. ENTERED ON DMI 17527 IAW MEL 26-10-1-1A. REMOVED AND REPLACED LOWER SMOKE DETECTOR UNIT (SDU) FA 16037. OPERATIONAL CHECK IAW STC ST00746LA-D FOUND NORMAL. CLEARED DMI # 17527 AND REMOVED PLACARD.