As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPTAIN`S NAV DISPLAY SHOWED VTK AND MAP. BOTH CDUS DISPLAYED MENU PAGE WITHOUT FMC. RAN FMC FAIL CHECKLIST AND COMPLETED WITH FMC SOURCE ON RT. FMC -LT ON POS SHIFT PAGE IS BLANK. ACFT GROUNDED. REMOVED DISCREPANT LT FMC COMPUTER IAW AMM 34-61-02. INSTALLED SERVICEABLE FMC COMPUTER REF AMM TASK 34-61-02. PERFORM SYS OPS TEST REF AMM TASK 32-61-00-710-801. GROUND VERIFICATION CHECKS SUCCESSFUL. ACFT OK FOR SERVICE.