I believe that is rotation counter.What is the PCB on the top of the motor for? The red and black wires seem like a normal DC spindle motor... but that PCB.
I believe that is rotation counter.
That was all I could think of but the question is why? (because CD and DVD players detect speed using data off the disc).
If you at the point of no return and the motor has to be swapped then see if the board is removable and not actually part of the motor itself. Most (well all I've seen) players use standard off the shelf mechs and so on, and often they are DVD based. There are zillions of spindle motors available if it is such a thing.
- Source & Line
- Digital Source
- Spindle motor identification