As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
F/O CDU BLANKED MOMENTARILY AND ALL KEY PAD MESSAGE LIGHTS ILLUMINATED. AFTER APPROXIMATELY 30 SECONDS CDU RETURNED TO NORMAL. ACFT GROUNDED. TROUBLESHOT IAW FIM 34-61, TASK 804. APPEARS TO HAVE BEEN AN INTERMITTENT FAULT. HAS NO OTHER RECENT HISTORY.