As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE NR 1 ENGINE HYDRAULIC LOW PRESSURE LIGHT ILLUMINATED WHILE ENROUTE TO CLE. THE LANDING GEAR WAS MANUALLY EXTENDED AND THE AIRCRAFT LANDED AT CLE WITHOUT INCIDENT. MAINTENANCE FOUND THE NR 1 ENGINE HYDRAULIC PUMP HAD FAILED INTERNALLY. THE PUMP WAS REPLACED IAW MM 29-11-11-00-803-001. OPERATIONAL CHECKS WERE GOOD.