What was found
EWR - FLT 0232 - NOSE GEAR DOOR OPEN LIGHT ON FORWARD PANEL AND SECOND OFFICER'S PANEL REMAINED ILLUMINATED AFTER RAISING THE LANDING GEAR ON TAKEOFF FROM EWR. CYCLING GEAR DID NOT HELP. CREW CONFIRMED DOOR WAS OPEN BY VISUAL INSPECTION THROUGH THE VIEW PORT. AIRCRAFT WAS RETURNED TO EWR WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND NOSE GEAR DOOR CABLES WITH ZERO TENSION AND BOTH CABLES STRETCHED AND CORRODED. CABLE PIVOT QUADRANT WAS WORN IN CABLE GROOVE AND CORRODED. CABLES AND QUADRANT WERE REMOVED AND REPLACED. AN ADJUSTMENT/TEST WAS PERFORMED IAW MM 32-22-1, PAGE 501. NOSE GEAR WAS SWUNG SEVERAL TIMES WITH ALL OPERATION AND INDICATIONS CHECKING GOOD. REF CONTL NR CAL95-0013.