As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2519 - ROC - FLIGHT CREW REPORTED ACFT DEPRESSURIZED ON DESCENT THOUGH FL200, CABIN ALTITUDE INCREASED, CABIN DIFFERENTIAL DECREASED AND CABIN RATE WAS POSITIVE NOT NEGATIVE BUT NO EICAS MESSAGE. CREW VERIFIED CORRECT CONTROLLER SETTINGS. EWR MX REMOVED AND REPLACED DIGITAL PRESSURE CONTROLLER AND PERFORMED OPERATIONAL CHECK SUCCESSFULLY. ACFT WAS APPROVED TO RETURN TO SERVICE.