What was found
WHEN SELECTING GEAR UP ON TAKE-OFF, GOT GEAR DISAGREE WARNING. RAN QRH AND GEAR EXTENDED NORMALLY. NOSE GEAR RED SYMBOL AND NOSE DOOR OPEN RED WARNING. GEAR DISAGREE MESSAGE APPEARED WITHIN 5 SECS. *******AIRCRAFT REMOVED FROM SERVICE*********** VISUALLY INSPECTED NLG. NO OBVIOUS DAMAGE, LEAKS OR DEFECTS NOTED TO GEAR ASSY, RETRACTION COMPONENTS OR PROXI SENSORS. C/W "M" ACTION FOR MEL 32-30-01. GEAR PINS INSTALLED AND FLAGS REMOVED.