As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH THE AUTO PRESSURIZATION ON MEL THE CABIN ALTITUDE INDICATION DASHED AT FL080. THE AIRCRAFT LEVELED OFF AT FL100 AND PER MEL CABIN ALTITUDE INDICATION IS REQUIRED, AND THE AIRCRAFT RETURNED TO CHS AND LANDED WITHOUT INCIDENT. MAINTENANCE DEFERRED THE MANUAL PRESSURIZATION SYSTEM. THE AUTO AND MANUAL PRESSURIZATION MEL'S WERE CLEARED IN CVG WHEN THE DIGITAL PRESSURE CONTROLLER WAS REPLACED WITH NO FURTHER DEFECTS NOTED.