As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L HYD QUANTITY LO HYD PSI EICAS. DECLARED AN EMERGENCY AND FOLLOWED QRH WE STILL HAD PSI. REPLACED NR 1 ENGINE DRIVEN HYDRAULIC PUMP IAW AMM 29-11-05-4-2 NEEDS TO BE LEAK CHECKED RAN NR 1 ENGINE PER JRH TO LEAK CHECK ENGINE DRIVEN HYDRAULIC PUMP, NO LEAKS FOUND. R&R LT ENGINE DRIVEN PUMP PRESSURE AND CASE DRAIN FILTER MODULE AND LT SYSTEM RETURN FILTER IAW AMM 29-11-17-4.