As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI-IN THE F/O'S ND DISPLAY SHOWED VTK AND THE RIGHT CDU FROZE. EVERYTHING CAME BACK TO NORMAL AFTER APPROX 2 MINUTES. GROUNDED - YES. ACCOMPLISHED FIM 34-61 TASK 801. NO FAULTS NOTED. ACCOMPLISHED SUCCESSFUL GROUND VERIFICATION OF CDU SYSTEM PER 31-62-00/501. NO FAULTS STORED IN MEMORY.