As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING COCKPIT PRE-FLIGHT INSPECTION, F/O FOUND THE SPEED TRIM FAIL LIGHT ILLUMINATED ON OVERHEAD PANEL. ACFT GROUNDED. RAN DFCS BITE SPEED STAB TRIM GROUP NR 60-32, NO FAULTS, SPEED TRIM FAIL LIGHT OFF AFTER TESTS, DFCS CURRENT STATUS NO FAULTS.