I've already got the service manual open. I can see the error I'm making with the voltage measurement, the motor is PCM controlled, which explains the low voltage on my meter! I'll go stand in the corner!
I took a bit of a punt and applied 9v to the motor briefly. That seems to have done the trick, something inside the motor must have been seised and the little bump has freed it up.
Now the arm is moving along the track under power, I notice that it doesn't travel all the way to the end stop switch. It stops about 5mm short. Is this normal? It seems to pick up the end of the record regardless.
You may have the end detect and reset switches confused, look at page 6/7 of the manual and you will see what I mean. The end detect is inside toward the left of the unit and the reset is closer to the spindle, did you also see how they kept the motor away from the arm it is all the way over to the left on the other side of the record. Great engineering in a consumer base item.
Last edited by tckmet on 16 Oct 2017 16:55, edited 1 time in total.
I replied to the switch question and did you know that you can literaly stand the unit up on its side and it will still play since the arm is dynamic balanced instead of static balanced like a radial arm. The SL-QL1 is another great one to have and I am working on 2 of them besides a SL-DL1 and a SL-BL3. I also have several of the SL-Q2s and the 1200mk2s along with 1300/1400mk2s and I finally bought a SP-15 and SP-25 to play with in the future.