Troubleshooting This section covers troubleshooting and other helpful electromechanical information about your xsTECH Router! Sections X Axis Gantry Alignment ETS Error When Measuring Tools xsTECH Axis Motion Control Swap xsTECH Spindle Speed Control Troubleshooting xsTECH Spindle Running in Reverse xsTECH X-Axis Motor Replacement xsTECH Y-Axis Motor Replacement