As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLT - FLT 1722 FLL TO CLT. A BURNING ODOR WAS NOTED WITH THE NUMBER ONE FORWARD EQUIPMENT FAN SELECTED ON, ALONG WITH AN EICAS MESSAGE "FWD EQUIP SUPPLY FAN 1". THE ODOR DISSIPATED WHEN THE FAN WAS CHANGED TO ALTERNATE. MAINTENANCE REPLACED THE FORWARD NUMBER ONE EQUIPMENT SUPPLY FAN. OPERATIONALLY CHECKS OK.