What was found
NO ATC BUTTON ON CAPTAIN'S CDU. ACFT GROUNDED. REPLACED THE CAPTAIN'S MCDU KEYBOARD. OP CHECKED NORMAL IAW AMM 34-61-01-000-801, & 34-61-01-400-801.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
NO ATC BUTTON ON CAPTAIN'S CDU. ACFT GROUNDED. REPLACED THE CAPTAIN'S MCDU KEYBOARD. OP CHECKED NORMAL IAW AMM 34-61-01-000-801, & 34-61-01-400-801.