As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN LEVEL CRUISE AT FL360 DURING LIGHT TO MODERATE TURBULENCE RUDDER RATION CAUTION LIGHT AND EICAS MSG APPEARED. PERFORMED FIM TASK 27-09-00 FIG 106B, FOUND LEFT AND RIGHT MODULES WITH PCA FAULTBALL. REMOVED AND REPLACED RUDDER RATIO CHARGER ACTUATOR PER AMM 27-71-13. OPS CHECKS OK.