As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CO-PILOT'S CDU PANEL BUTTONS ARE WORN BEYOND LIMITS. UNREADABLE AT NIGHT WITH POOR BACKLIGHTING, DIFFICULT TO READ DURING THE DAY. COVER ARE ALSO WORN ON LINE KEYS. ACFT GROUNDED. VERIFIED DISCREP. REF MM 34-61-01. REPLACED F/O'S FMCS CDU KEYBOARD. OPS NORMAL REF SAME MM.