As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX FLIGHT NR 2149 SMOKE WARNING LIGHT ILLUMINATED DURING CLIMB-OUT. RETURNED TO FIELD AS PER EMERGENCY V-LIST. C/W OPS CHECK OF BAG SMOKE DETCTORS. COULD NOT DUPLICATE ON GROUND. VISUAL OF BAGGAGE COMPARTMENT DETECTORS NR 1 SMOKE DETECTOR ON CEILING DID NOT HAVE COPPER GROUNDING TAPE INSTALLED. REPLACED NR 1 SMOKE DETECTOR. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.