What was found
AIRCRAFT WAS GROUNDED: ON TAKEOFF AND AFTER GEAR RETRACTION, GEAR HANDLE WAS POSITIONED TO OFF POSITION AND NOSE WHEEL DROPPED TO AN EXTENDED POSITION. DECESION MADE TO RETURN TO IND. EMERGENCY DECLARED AND LANDED WITHOUT INCIDENT. MAINTENANCE CLEARED LATCHED PSEU FAULT FOT NOSE GEAR UP LOCK SENSORS, JACKEDNOSE ACCOMPLISHED NOSE GEAR SWING SEVERAL TIMES AND COULD NOT DUPLICATE THE PROBLEM NOSE GEAR STAYED UP IN OFF POSITION IAW FIM 32-30-00-810-810 AND AMM 32-33-00-710-801.