As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR DISAGREE EICAS MESSAGE W/AMBER GEAR CAUTION LIGHT ON TAKEOFF. NO LIGHT IN GEAR HANDLE AND 3 GREEN GEAR LIGHTS EXTINGUISHED. REMOVED NOSE GEAR LOCK ACTUATOR IAW AMM 32-34-02-4. INSTALLED NOSE GEAR LOCK ACTUATOR REF 32-34-02-4. LEAK CHECKED GOOD. PERFORMED GEAR RETRACTION WITH NO FAULTS.