I just replaced a spindle motor in a Sony DVD player. Before I removed the defective motor I was very careful to note the clearance between the bottom of the plastic piece that the disc sits on when it rotates, and the top of the housing that the motor is mounted to. I did this by using a drill bit as a feeler guage before pulling this little disc off the defective motor shaft when I removed it from the unit. Naturally I reassembled everything in the reverse order maintaining the same clearance with the new motor. The new motor spun up ok but would not read the disc until (after some tweaking with the clearance) I decreased it a bit more than it originally was. At that point the disc read fine and the job it seems was finished. A couple of things disturb me though. For one the final adjustment was done by pure guess work and although it seems to work just fine, (I have watched through a complete movie and listened to CD's on this unit), how do I know if the position of the disc relative to the laser unit is dead center or marginal? Just how critical is this clearance? Is there some room for a certain amount of error here? And also what is the correct procedure for doing this replacement? Thanks, Lenny Stein, Barlen Electronics.
- posted
18 years ago