As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT FL320 CAPTAIN'S CDU BLANKED OUT AND THE FOLLOWING LIGHTS: EXEC CALL, FAIL, MSG, AND OFST LIGHTS. CDU SCREEN RECOVERED AFTER 5 SECONDS AND ALL LIGHTS WENT OUT, CDU FULLY RECOVERED WITH NO ACTIONS BY FLIGHT CREW. GROUNDED - YES. FLIGHT MANAGEMENT COMPUTER SYSTEM OPS CHECKS NORMAL PER AMM 34-61-50-710-801.