As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLE FLIGHT 3077 THE CREW REPORTED THE GEAR WOULD NOT RETRACT IMMEDIATELY AFTER TAKEOFF. RECYCLED THE GEAR HANDLE AND THE GEAR RETRACTED. THE AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE LANDING GEAR ELECTRONIC UNIT. OPERATIONAL CHECKS WERE GOOD. THE AIRCRAFT WAS RELEASED FOR SERVICE.