What was found
ON FLIGHT 4870 - CREW REPORTED AFTER TAKEOFF THAT THEY GOT A SPOILER FAIL EICAS MSG. THE CREW DECLARED AN EMERGENCY AND RETURN TO THE FIELD. MESSAGE EXTINGUISHED AFTER LANDING. AIRCRAFT REMOVED FROM SERVICE. TROUBLESHOT IAW EMB FIM 27-63-00-820-807. REMOVED AND REPLACED RELAYS K0479, K0482, K1202, K0030, K0031 QLWO. OPERATION CHECK GOOD IAW EMB MM 27-03-00. REFORMED CHECK FLIGHT CHECK FLIGHT GOOD. AIRCRAFT RETURNED TO SERVICE. (A)