As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER NR 2 ENGINE START AND THE NR 2 BLEEDS TURN ON, WHEN THE PACK WAS SELECTED ON, THERE WAS LOUD FAN SOUND FROM THE NOSE COMPARTMENT AREA. SHORTLY AFTER THAT THERE WAS AN ODOR AND SMOKE IN THE CABIN AREA. MAINTENANCE R & R THE FWD, CREW, ACM IAW AMM 21-50-1. REPLACED BECAUSE IT WAS FOUND SEIZED.