As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. ON CLIMBOUT THROUGH 1900 SYSTEM A HYDRAULIC ELECTRIC PUMP ILLUMINATED. RAN QUICK REFERENCE HANDBOOK AND RETURNED TO AIRPORT. EMERGENCY WAS DECLARED. FOUND Q-DISCONNECT LOOSE AT RESERVOIR. RETIGHTED Q-DISCONNECT, IAW AMM 29-11-31.