What was found
ENROUTE THE MESSAGE "CHECKED" SHOWED ON THE ED & NR 2 MFD A, "CHECK PFD2" SHOWED ON THE NR 2 MFD & NR 2 PFD. RETURNED TO FIELD. LANDING UNEVENTFUL. FOUND ED/PFD2 MISMATCH IN LAST LEG FAULTS. C/W FIM TASK 31-61-01-810-807. PERFORMED OPS TEST OF MFD2, PFD2, AND ED, REF MAINTENANCE 6316101, MAINTENANCE 6316104, AND AMM 31-61-01-710-803. REMOVED ED FOR INSPECTION OF ELECTRICAL CONNECTORS AND COOLING DUCTS. NO DEFECTS NOTED. INSTALLED ED REF AMM TASK 31-61-11-000-801 AND 31-61-11-400-801. RETURNED TO SERVICE.