Well, there is no 'think' in this case; either it's a vector drive machine or it's not. You need to figure out which.
Vector Drive: rectifies high voltage, 325VDC power for all of the axis amplifiers in the machine. It also controls the spindle--it's the spindle drive amplifier. It says "Vector Drive" right on it. It controls all of the spindle's actions (speed, position, braking).
Non Vector Drive: these machines are slightly different. The incoming power goes through a box in the same spot as the Vector Drive. In this case, that box is nothing but a 325VDC power supply. It has a rectifier bridge and some capacitors in it. From there, it takes power over to the axis amplifiers. In a non vector drive machine, they use a high-output amplifier to control the spindle. Other than the increased amperage, it looks just like the X,Y and Z amplifiers.
How are you with diagnosing electronics and finding & replacing components? There are voltages inside that cabinet that can easily kill you and maybe even light you on fire (no, I'm not kidding). Those voltages are even present after shutting off the power (stored in the capacitors in the power supply). Don't touch anything unless you absolutely know what you're doing.
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Greg |