As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JUST PRIOR TO LEVELING OFF IN CRUISE FA CALLED TO REPORT A "BURNING RUBBER" SMELL APPROXIMATELY ROW 9. AMBER FAN MESSAGE APPEARED ON COND PAGE ABOVE REAR CABIN TEMP. (CABIN FANS) PERFORMED OPS CHECK OF RECIRCULATION FAN. RESET C/B TEST OK IAW AMM 21-63-00. NO RUBBER SMELL NOTICED AT PRESENT. A/C OK FOR CONTUINUED FLIGHT.