As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 388 - LAS-CLT - EMERGENCY EQUIPMENT - CIDS FAULT: FLIGHT ATTENDANT HANDSET AT L3 INOPERATIVE, SLIDE PRESSURE AND DOOR PRESSURE AT L3 AND R3 FAULTING, AND WON'T RESET. REMOVED AND REPLACED DEU B AT 300RH6 IAW AMM 23-73-47 OPERATIONAL CHECK WAS GOOD.