As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT ROTATION, THE NR 1 ENGINE FIRE LIGHT ILLUMINATED FOLLOWED BY THE REVERSER UNLOCK LIGHT. WITH POWER REDUCED TO IDLE ON THE NR 1 ENGINE, THE FIRE LIGHT WENT OUT. FUEL WAS DUMPED AND THE AIRCRAFT RETURNED WITHOUT INCIDENT. MAINTENANCE FOUND AN ENGINE BLEED DUCT DAMAGED AND NUMEROUS REVERSER COMPONENTS OVERHEATED. THE DAMAGED PARTS WERE REPLACED AND THE AIRCRAFT WAS RETURNED TO SERVICE.