As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DUE TO HANDSETS CALL FUNCTIONS LOST AND PA NOT OVERRIDING SEAT AUDIO PLEASE REPLACE AUDIO ACC UNIT. CABIN INTERPHONE AUDIO FROM ALL HANDSETS IN CABIN & FLT DECK ALWAYS ON ("HOT"), EVEN AFTER RESET. CABIN INTERPHONE AUDIO FROM ALL HANDSETS IN CABIN & FLT DECK. SECURED INSERT PIN B23 ON R9011 TB9033. WIRE W9016-014-22 NOT FULLY INSERTED. SECURED WIRE. REF WDM DRAWING WD10666 SHEET 27. PA SYSTEM OPS CHECK'S GOOD. NO FAULTS.