Haas Alarm: 673 (M) TT or B SERVO ERROR TOO LARGE – Too much load or speed on TT or B-axis motor. Difference between motor position and commanded position has exceeded Parameter 470. Motor may also be stalled, disconnected, or the driver failed. The servos will be turned off and a Reset must be done to restart. This alarm can be caused by problems with the driver, motor, or the slide being run into the mechanical stops.