What was found
AUTOPILOT & A-P DISC LIGHT ON, LINE THRU (HDG HLD, HDG SEL, LNAV LOC, B-CRS) ON EADI, & EICAS MSG 'AUTOPILOT DISC' DISPLAYED WITH 1 AUTOPILOT SYSTEM ENGAGED IN CMD. OPS NORMAL WITH (L OR C) A-P SYS SELCTED (1=L, 2=C ,3=R) CREW COMMENTS: WITH CAPT FLT DIR OFF FO FD BARS ARE REMOVED FROM VIEW AND VNAV-LNAV REVERTS TO HDG-VS. WITH SAMC TEXT: ALSO WITH RIGHT A. RPL FCC R AND RH FMC, NO HELP. FOUND WIRE AT SOCKET 4 OF K2068 RELAY BROKEN. REPLACED SOCKET AND REINSTALLED. ACP CATIII TEST PER MM, TEST PASSED. RETURNED TO CATIII STATUS.