As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SPOILERS LIGHT ILLUMINATED AND EICAS MESSAGE DISPLAYED WITH SPOILERS SELECTED DOWN. AIRPLANE WAS IN FLIGHT. RETURNED TO DEPARTURE. MAINTENANCE FOUND SPOILER BOARD RVDT'S OUT OF ADJUSTMENT. ADJUSTED ALL RVDT'S IAW MM 27-61-00, PROCEDURE NR 5. NO FURTHER FAULTS.