As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ATB, DUE TO AFTER TAKEOFF SMOKE REPORTED IN FLIGHT DECK AND CABIN - RETURNING TO LAX. PERFORMED FIM 71-05-00-815-811-P00 STEPS 1 & 2 NO ODOR FROM EITHER ENGINE. COMPLETED FIM TASK STEP 5 NO EVIDENCE OF FUEL OR HYDRAULIC FLUID SMELL ALSO RAN BOTH PACKS TO FULL HOT CKS OK.