As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPTAIN REPORTED THAT DURING TAXING AND WHEN IT WAS TURNED WITH AUTOPILOT SELECTED, THE FLIGHT CONTROLS DID VIBRATION. MX PERSONNEL REPLACED THE DUPLEX AILERON SERVO BRACKET RHEOSTAT IAW MM 22-11-01 AND THE DFGS STATUS/TEST (STP) PANEL WAS CHECKED IAW MM 22-01-05, TESTED CORRECT.