As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIRE SYS FAULT. FLT CREW PLAC IAW MEL 2601 AUTH 120471D-C MOC 686516. TROUBLE SHOT IAW 700 FIM 26-10-00. NO MDC MESSAGE FOUND, PERFORMED OPERATION CHECKED OF FIRE EXTINGUISHER SYS. OPERATIONS CHECKED GOOD IAW 700 AMM 26-10-00 MEL RESTORED.