As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAX - CREW REPORTED AFTER GEAR HANDLE MOVED TO "DOWN" POSITION AND ALL GREEN GEAR POSITION LIGHTS ILLUMINATED, THE AMBER "DOORS" LIGHT STAYED ILLUMINATED FOLLOWED BY AMBER CAUTION "GEAR DOWN" EICAS MESSAGE. FLIGHT LANDED LAX WITHOUT INCIDENT. REPLACED PROXIMITY BOX. SYSTEM GROUND CHECK NORMAL OPERATION.