What was found
ON TAKEOFF ROLL, PRIOR TO 60 KTS CABIN SMOKE ILLUMINATED. REF QRH NO SMOKE OR FIRE. NO CAUTION JUST LEVEL THREE OCCUR ON 9 SEPARATE OCCASIONS DURING TAXI IN. PERFORMED A MANUAL TEST OF THE MAIN CABIN SMOKE DETECTORS, OPERATIONS CHECKED GOOD. EXAMINED THE RETURN TO SERVICE, DISCRETE STATUS, INSERT A PAGE FOR VIA UNITS 1, 2, & 3. IAW FIM 26-15-00-2 ALL VIA'S DISCRETE STATUSES AGREE CHECKED GOOD. ACFT HAS DISPLAYED NO FAULTS AFTER BLOCK IN NEXT STEP IN FIM IS TO CHANGE.