As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - NR 1 ENG HYD PUMP, NR 1 HYD ISO VLV, AND ASSOCIATED CAUTION LIGHTS ILLUMINATED FOLLOWING TAKEOFF AND AFTER THE AFTER TAKEOFF CHECKLIST WAS ACCOMPLISHED TURNING OFF ALL HYDRAULIC PUMPS. DIVERTED TO SEA. NR 1 ENG EDP REMOVED AND REPLACED, NR 1 HYD SYSTEM FILTERS REMOVED AND REPLACED. NR 1 HYD SYSTEM FLUSHED. GROUND RUNS OPS AND LEAK CHECKS GOOD. RETURNED TO SERVICE.