As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A FAILED APU START, THE CARGO BAY SMOKE BUTTON ILLUMINATED, FOLLOWED BY A CARGO EXTINGUISHER BOTTLE INOPERATIVE. THEN LIGHTS WENT OUT EXCEPT THE CARGO EXTINGUISHER BOTTLE INOPERATIVE LIGHT. REMOVED AND REPLACED THE HIGH RATE AND METERING CARGO FIRE BOTTLES IAW AMM 26-23-01. OPS CHECKED GOOD. AIRCRAFT GOOD FOR SERVICE.