As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PUSHBACK, NR 1 BTL CARGO FIRE EXT DISCHARGE WAS ILLUMINATED. DURING TOW INTO GATE NR 2 BTL DISCHARGE ILLUMINATED AND WAS ACCOMPANIED WITH CARGO BTL 1 AND CARGO BTL 2 EICAS MESSAGE. REPLACED NR 1 CARGO FIRE EXT BOTTLE AND FOUND PRESSURE SWITCH FAULTY.