As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CARGO DOOR WARNING LIGHT S/O PANEL AND RIGHT AT ENTRY DOOR ILLUMINATED AT FL285 CABIN PSI WAS 7.0 TO 8.0 PSI NO LOSS OF PRESSURIZATION NOTED. DHL AIRWAYS EVENT REPORT STATES AN EMERGENCY WAS DECLARED. ADJUSTED AFT JAMB DRIFT PIN SWITCH. OPS CHECKED DOOR PER MM CHAPTER 52-30-0. NO DEFECTS FOUND. PRESSURIZED AIRCRAFT TO 92 PSI, WARNING LIGHT DID NOT ILLUMINATE.