Originally Posted by Dream Land
1. Request the Purser to the flight deck, have a crew member monitor conditions above the AFT cargo, floor temperature or smoke.
2. Monitor AFT cargo temp if available.
3. Check FCOM
4. Notify company and ATC of situation.
5. Unless smoke or heat present, continue to destination.

Thx Dream Land and others,
that's exactly what we did (FCOM was no help).
In addition
6. Pull/reset CB of both SDCU to trigger the warning again (only red light appeared)
7. Discharged bottles!
8. High Speed to destination
9. Fire truck on stby
10. Kept cargo doors closed until passenger disembarked
11. Had a couple of beers in hotel