As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED SMOKE IN COCKPIT. WITH LAV SMOKE DETECTORS GOING OFF, CREW TURNED BLEEDS OFF AND SMOKE STARTED TO CLEAR. CREW DID NOT DECLARE AN EMERGENCY AND RETURNED TO DEPARTURE WITHOUT INCIDENT. AFTER BEING CLEARED BY FIRE DEPARTMENT, CREW TAXIED TO GATE. ACFT REMAINS OUT OF SERVICE.