As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3833 THE CREW REPORTED THAT WHILE CRUISING AT ALT.3700, THEY RECEIVED A CABIN ALT WARNING MESSAGE, MASK DROPPED, CABIN ALT MOMENTARILY WENT 23000 FT THEN BACK TO 6400FT NORMAL READING ON CABIN ALT AND CABIN PRESSURE. THE AIRCRAFT LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE CABIN PRESSURE CONTROL PANEL IAW CRJ-700 AMM 21-33-01. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.