What was found
DURING CRUISE FLIGHT, DU NR 2 WENT BLACK ACCOMPANIED BY A SMALL AMOUNT OF ELECTRICAL SMOKE AND ODOR. WHILE ACCOMPLISHING THE ELECTRICAL SMOKE OR FIRE CHECKLIST, UPON SELECTION OF EICAS BUTTON OFF, THE "REMOTE CB TRIPPED" CAS MESSAGE DISPLYED AND ALL ELECTRICAL SMOKE AND ODOR WAS ELIMINATED. A DIVERSION TO THE NEAREST SUITABLE AIRPORT WAS THEN INITIATED WITH NO FURTHER SMOKE OR ODOR.(EICAS POWER CIRCUIT BREAKER DEACTIVATED PER EMERGENCY CHECK LIST) RESET THE EICAS POWER CIRCUIT BREAKER. R & R THE DU NR 2 C/W MFD NR 1 TARGET LOAD. LOAD SUCCESSFUL. OPS CHECKED GOOD IAW MM 34-23-10.