As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON LANDING WITH SPEED LEVERS AT LOW RPM, CABIN STARTED TO ACCUMULATE SMOKE. BOTH BLEEDS WERE TURNED OFF. SMOKE CLEARED DURING TAXI TO GATE. PROBLEM WAS DETERMINED TO BE LEFT ACM WHICH HAD SEIZED. ACM WAS REPLACED NO FURTHER PROBLEMS NOTED.