As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MN CARGO DOOR LIGHT ILLUMINATED WHILE CLIMBING THRU 5000 FT RAN QRH RETURNED TO KLAX THE LIGHT DISTINGUISHED AFTER 10 MINS AT 7000 LEVEL FLIGHT GROUNDED BY MAINTENANCE. MAINTENANCE DEFERRED DOOR INDICATION IAW MEL-52-71-1-2 AIRCRAFT RETURNED TO SERVICE.