As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 3236 DISC: AT THE GATE WITH ENGINES SHUT DOWN AND CABIN DEPRESSERIZED. RED LIGHT AT ALL 4 MAIN CABIN DOORS FLASHING. C/A: FWD TO MEL 52-70-02. NO "M" PROCEDURES. MEL & PLAC INSTALLED. LIGHTS NOT FLASHING AT THIS TIME. (LP: 6010906)