As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OPEN -ATO- FT CARGO OVHT LIGHT CAME ON AS WE PUSHED POWER UP FOR T/O ROLL AT APPROX 20-30 KTS OR LESS. RECYCLED SWITCH, LIGHT DID NOT GO OUT. OK TO CONTINUE IAW MEL TRANSCRIBED TO MIC SHEET PLACARDED. DISCONNECTED BOTH VALVES AND LOCKED IN CLOSED POS (AFT CARGO).