As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JUST PRIOR TO PUSH CREW NOTICED A STRONG BURNING SMELL IN THE COCKPIT. SHORTLY AFTERWARDS FWD EQ EXH FAN STATUS MESSAGE APPEARED. CREW NOTIFIED MAINTENANCE. REMOVED AND REPLACED FWD EXHAUST FAN REF 767 AMM 21-58-06-4. OPS CHECKED GOOD.