As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FL360 F/O'S MCDU BLANKED OUT FOR APPROX 1 MINUTE THEN CAME BACK ON. THEN WE SMELLED ELECTRICAL FIRE/FUMES. PULLED F/O, MULTI-FUNCTION DISPLAY UNIT NR 2 CB RT EMERGENCY AC BUSS, ODOR/FUMES WENT AWAY. R & R THE MULTIFUNCTION CONTROL UNIT IAW THE AMM 31-65-01-4. TESTED GOOD IAW 31-65-01-5. NO ODORS. OK FOR CONTINUED SERVICE.