As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN SELECTING LANDING GEAR UP RECEIVED NOSE DOOR OPEN AND GEAR DISAGREE WARNING MSG APPEARED IN 2-3 SECONDS C/W QRH MSG CLEARED NORMAL SMOOTH LANDING. LANDING WT 34,750LBS. AIRCRAFT REMOVED FROM SERVICE. READJUSTED GAP ON NLG CENTERED/EXTENDED PROXIMITY SENSOR PER AMM 32-61-05. OPS CHECK GOOD AT THIS TIME.