As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CVG - FLT 4093 - AFTER AIRCRAFT WAS POWERED FOR SOMETIME, THE CREW STARTED SMELLING SOMETHING IN COCKPIT ONLY. INSPECTED AREA AND COULD NOT FIND WHERE SMELL WAS COMING FROM. SENDING MTX FROM CMH. REMOVED AND REPLACED EICAS DISPLAY UNIT IAW AMM. OPS CHECK GOOD. (M)