What was found
PHX - ABORTED TAKEOFF - FLT 206 - DURING TAKEOFF CREW REPORTED THAT WITH ENGINE POWER EVEN AND STABLE, THE AIRCRAFT VEERED TO LEFT. RIGHT RUDDER INPUT WAS NOT EFFECTIVE. AIRCRAFT CONTINUED TO VEER LEFT. CREW ABORTED TAKEOFF AT 50 KNOTS. RETURNED TO THE GATE WITHOUT FURTHER EVENT. MAINTENANCE PLACED THE RUDDER PEDAL NOSE WHEEL STEERING SYSTEM ON MEL. IN PHX, MAINTENANCE FOUND THE NWS CABLES MWSB AND NWSA OUT OF RIG. ADJUSTED CABLES IAW BOEING 737-300 MM 32-51-00-5. NOSE WHEEL STEERING OPERATIONAL CHECK WAS GOOD AND DEFERRAL WAS CLEARED.