As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI OUT, ALARM SOUNDED FROM BELOW FLOOR. EQUIPMENT COOLING OVERHEAT LIGHT ILLUMINATED WITH FWD EQ SUP FAN 1 STATUS MSG. PULLED/COLLARED FWD EQ SUPPLY FAN 1 CB, FWD TO MCO/PLAC PER MEL 21-58-03. REMOVED AND REPLACED FWD EQUIP COOLING SUPPLY FAN NR 1 P AMM. OPS CHECK OK. MCO AND PLACARD REMOVED.