As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FMC FAILURE, FLIGHT DIVERTED. UPON INVEST FOUND HALF OF MCP SWITCH LIGHTS INOP INCLUDING ALL AUTOPILOT LEFT AND CENTER LIGHTS.SUSPECT LEFT SIDE OF MCP DOWN. RESET MCP CBS AND FUNCTIONS RESTORED. NOW ABLE TO ENGAGE ALL AUTOPILOTS NORMALLY. REPLACED MCP PER MM. ALL OPERATIONS AND TESTS NORMALLY CARRIED OUT. AFDS SYSTEM TESTS OKAY. AIRCRAFT NOW RESTORED TO CAT III STATUS WITH AUTOLAND. OK FOR FURTHER SERVICE