As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON INITIAL POWER UP OF AIRCRAFT, THE CARGO FIREX PANEL INDICATED SMOKE CARGO. BOTH RED LIGHTS ILLUMINATED WITHOUT BOTTLE ARMED LIGHTS ILLUMINATING. REPLACED BOTH NR 1 AND NR 2 SMOKE DETECTORS IN THE CARGO COMP. SYSTEM OPS CHECKS GOOD. P/N: 473597-19, S/N OFF: 1917, S/N OFF: 0857.