What was found
AFTER TAKEOFF GEAR WOULD NOT COME UP, PULLED TRIGGER LOCK OVERRIDE TO RISE AFTER GEAR RETRACTED, TAKEOFF WARNING HORN AND CDU STUCK. USED QRH PULLED P62 CB HORN OFF, AND CDU OK. AIR RETURN TO PHX, AND MADE AN UNEVENTFUL LANDING. ADJUSTED GROUND SENSE CABLE AIR SENSOR AND LUBE CABLE PER BOEING MM.