217-9191-751
Victor SPX User Guide
vexpro.com ctr-electronics.com
Copyright 2018, VEX Robotics Inc., Cross the Road Electronics
Updated: 2021-11-29
18
Indication: No power output from the speed controller and the Status LEDs do NOT work.
Problem: No input power or possible internal damage.
Possible Solutions:
If the Status LEDs on the Victor SPX are not operating properly and there is no output, the Victor SPX
may be internally damaged. This condition is typically caused by no input power or a reversed polarity
on the input.
Check the following:
1.
Disconnect the output wires.
2.
Ensure the Status LEDs on the Victor SPX do not illuminate at any joystick position.
3.
Check the input at the Victor SPX (+BATTERY to GND) with a voltmeter. If the Status LEDs
are not working properly and the input is good, the speed controller is probably damaged.
The final test to determine if the Victor SPX is damaged is to replace it with another Victor
SPX that is known to function properly.
CAUTION: PRIOR TO REPLACING A POTENTIALLY DAMAGED SPEED
CONTROLLER, ENSURE THAT THE WIRES CONNECTED TO THE OUTPUT
ARE NOT SHORTED AND THE INPUT IS NOT REVERSED. ALSO, VERIFY
THAT NEITHER OF THE VICTOR SPX’S MOTOR OUTPUT LEADS ARE
SHORTED TO THE CHASSIS OF THE MOTOR OR THE ROBOT.
