As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DEPARTURE THE CREW REPORTED THAT IT TOOK THE NOSE LANDING GEAR ALMOST 1 MINUTE TO RETRACT AFTER SELECTING THE GEAR UP. A LANDING GEAR DISAGREE MESSAGE WAS ALSO REPORTED. THE AIRCRAFT RETURNED TO CMH AND LANDED WITHOUT INCIDENT. MAINTENANCE PERFORMED FIM TASK 32-32-00. GEAR WAS EXTENDED/RETRACTED FIVE TIMES WITH NO DEFECTS NOTED. NO EICAS OR CMC MESSAGES WERE DISPLAYED OR RECORDED AND THE SYSTEM OPERATED NORMALLY.