As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE LOST LEFT SYMBOL GENERATOR FOLLOWED 5 MINS LATER BY RUDDER RATIO AND AILERON LOCKOUT EICAS MSGS AND LOSS OF ALL 3 AUTOPILOTS. FOUND LEFT SAM W/ FAULT BALL. WILL NOT RESET. CYCLED 1L AND 2LAC AND DC FLT CTL ELEC C/B'S. ALL FAULTS CLEARED. REPLACED 1L AND 2L CSEUS AS PRECAUTION. RERACKED LEFT SYMBOL GEN. ALL OPS OK. PERFORMED TEST 40 FOR A/P. CHECKS OK.