What was found
VTK ILLUMINATED CAPT`S ND AND ASSOCIATED FMC PROMPT DISAPPEARED ON CAPT'S CDU DISPLAY. BOTH CYCLED 4 TIMES RESTORING AND CLEARING ITSELF WITHIN A 5 MINUTE PERIOD. F/O'S SIDE (SYSTEM) OPERATED NORMALLY. THIS OCCURRED SHORTLY AFTER LANDING. GROUNDED - YES. VERIFIED LAST FLT HAD FAULTS. LT FMC MMR-L GPS (GPS MAINT); MMR-R GPS (GPS MAINT); ADIRS-L ADR (BARO ALT 1); ADIRS-L IR (PRES POS LAT); ADRIS-R ADR (BARO ALT 1); ADIRS-R IR (PRES POS LAT); CDS-L IR (CP-L 272 DISCR RATE); AND CDS-R (CP-L 272 DISCR RATE). ACCOMP MMR BITE ON BOTH MMR'S BOTH PASS TEST, ALSO DFCS LRU REPLACEMENT TEST FOR MMR'S NOT PASS, REF B737-900 FIM 34-31 TASK 801 & B737-900 FIM 34-61 TASK 801. REPLACED LT FMC WITH SERVICEABLE ONE. ACCOMP FMC SOFTWARE TRANSFURE LOAD. VERIFY SOFTWARE. ACCOMP FMC PERFORMANCE FACTOR ADJ. VERIFIED FF ACCOMP FMC OPS TEST. TEST PASS, REF737-900 AMM 34-61-02-400-801, AMM 34-61-00-470-806, AMM 34-61-00-710-801.