As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEFECT: 3/31/2022 - SMOKE IN FLIGHT DECK UPON POWER UP TO TAXI. RAN SMOKE QRH PROCEDURE. MXC NOTIFIED. RESOLUTION 4/2/2022 - PERFORMED AMM TASK 21-00-01-100-801 REMOVED AND REPLACED PRIMARY AND SECONDARY HEAT EXCHANGERS AND RAN PACKS AND BLEEDS FOR 30 MINUTES WITH NO SMOKE. AIRCRAFT OK FOR SERVICE.