As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDIS 947 29-10 0166 13AUG21 AFW FACT U IN CRUISE AT FL 360 C HYD SYS PRESS EICAS MESSAGE AND SYS PRESS LIGHT. HYD QTY AND PRESS INDICATED NORMAL ON STATUS PAGE. COMPLIED WITH QRH 13.1.3 AND DECLARED AN EMERGENCY. CONTINUED TO DESTINATION AND LANDED WITH NO FURTHER ISSUE. FACT 13AUG21 09:25 AFW U REMOVED AND REPLACED S10002 CENTER HYD PRESSURE SWITCH IAW MM 29-11-19-4. PERFORMED OPS CHECK IAW MM 29-11-00-5. NO LEAKS NOTED. A/C OK FOR CONT SERVICE.