Hi all, I got a stepper from an old Canon CanoScan 8400F. The label on it identifies it as a Minebea 14PM-M201. I found a data sheet that says this is a unipolar stepper with six wires. A photo also shows six wires. But mine actually only has four wires. Do unipolar steppers always have more than four? Can anyone explain why this one has only four wires? Could it be bipolar in disguise? Can I somehow test to see if it's uni- or bi- polar? Thanks in advance. I'm a newbie when it comes to steppers.