As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ATTEMPTING TO CLOSE THE L2 PASSENGER DOOR TO FACILITATE MAINTENANCE ON THE DOOR HINGE COVER PLATE,THE DOOR EMERGENCY POWER RESERVOIR WAS INADVERTENTLY DISCHARGED. THE POWER RESERVOIR WAS REPLACED AS PER THE APPLICABLE MAINTENANCE MANUAL AND WAS RIGGED PER MANUAL. THE AIRCRAFT WAS THEN RETURNED TO SERVICE.