As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PARKED ON RAMP POST ARRIVAL WITH GROUND POWER ENGAGED AND ENGINE SHUTDOWN, THE AFT CARGO SMOKE WARNING LIGHT ON THE FIRE DETECTION/PROTECTION CENTER CONSOLE PANEL, MASTER FILE WARNING AND BELL ILLUMINATED / SOUNDED. REPLACED AFT CARGO SMOKE DETECTOR IAW AMM 26-16-11. OPS CHECK NORMAL. AIRCRAFT RETURNED TO SERVICE.