As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: INOP EPSU 12WL LOCATED IN EMERGENCY EXIT HATCH DOOR 844 AREA AT PASSENGER CABIN. REPLACED EPSU 12WL LOCATED IN EMERGENCY EXIT HATCH DOOR 844 ARE AT PASSENGER CABIN IAW AMM 33-51-38-000-001-A AND AMM 33-51-38-400-001-A.