As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT HYDRAULIC SYSTEM 'RSVR' LIGHT INOPERATIVE. NEED MORE TROUBLESHOOTING. INF- :383-23 CRW REPORT NORMAL OPS OF HYD SYSTEM PRESS INDICATION, AND AFTER ENGINE START THE RTT HYD RSVR PRESS EICAS MSG WAS NOT DISPLAYED. THIS ITEM CREATED AS PART OF DF695. REPLACED MONITOR UNIT SEQ# 9782007.