If the error continues to come up
Go to the DIAGNOSTICS menu,
Run the Component Test for each motor
If any motor is not working check the connections to the DC Controller
If all connections are good then replace the motor.
59.50 indicates a main motor failure either the motor is bad or something is stopping it from turning. can be as simple as a bad toner.
turn the machine on and listen for the motor noise if you don't hear it turn the machine off remove the toner and turn it back on if you can hear the motor running youmay just have a bad cart.
hope this helps