As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED THE SMOKE WARNING LIGHT CAME ON INTERMITTENTLY DURING CLIMB AND STAYED ON FOR APPROXIMATELY 5 MINUTES DURING CRUISE. MAINTENANCE INSPECTED THE AIRCRAFT, AND DETECTORS, AND NOTED NO DEFECTS. THE DETECTORS WERE CLEANED AS A PRECAUTIONARY MEASURE AND OPERATIONAL CHECKS WERE PERFORMED. THE CHECKS WERE GOOD AND THE AIRCRAFT WAS RETURNED TO SERVICE.