What was found
DURING BANKING LEFT TURN, CAPTAINS ATTITUDE MADE UNCOMMANDED FURTHER BANK & CLIMB FOLLOWED BY DFGC 1 FAIL, CAUSING AUTOPILOT & AUTO THROTTLES TO DISCONNECT. DFGC WAS SELECTED IAW QRH & AUTOPILOT & AUTO THROTTLES WERE REENGAGED. DURING NEXT TURN, DFGC 2 FAILED WITH SAME OUTCOME. DFGC 1 WAS RESELECTED & WORKED NORMALLY FOR REMAINDER OF FLIGHT. FIRST OFFICERS FLIGHT DIRECTOR FAILED & NEVER RETURNED TO NORMAL OPERATION. IAW TECH SUPPORT WE CHANGED RELAY R2-3 & R2-6, ALSO NR 1 VG IAW AMM 34-23-01 & AMM 20-50-00. SYS OPERATIONS CHECKED GOOD. ALSO PERFORMED & RTS SYS 1. OPERATIONS CHECKED GOOD IAW AMM 22-01-05.