What was found
PDX FLIGHT: PUSHER SYSTEM FAIL CAUTION LIGHT ILLUMINATED AFTER LANDING. PERFORMED STALL SYSTEM CHECK AS PER EMERGENCY CHECKLIST. DID NOT EXTINGUISH LIGHT. MAINTENANCE CHECKED CDS FOR FAULTS PER Q400 FIM TASK 27-33-04-810-829. NO FAULTS FOUND (POWER HAD BEEN CYCLED PRIOR TO CHECKING FOR FAULTS). STALL WARNING/STICK PUSHER SYSTEM FUNCTIONAL TEST GOOD IAW Q400 MM TASK 27-33-00-710-801. NO FAULTS FOUND IN CDS. NO FURTHER MAINTENANCE PROCEDURE NECESSARY PER FIM TASK 27-33-00-810-829. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.