From: JERONI.PAUL@terra.es   
      
   Jeroni Paul wrote:   
   > A secondary sympthom (maybe related) is when playback is stopped through the   
   stop button, the sled returns home and at the end the sled gears slip some   
   teeth because the inertia, the motor does not brake in time. BUT if playback   
   is stopped with the    
   stand-by button instead, it does the same without teeth slippage, because it   
   brakes. I ran some tests shorting the switch contacts and with the Stop button   
   the sled moves some extra millimeters due to inertia. I can't explain how the   
   BA6296FP can stop    
   the motor without brake as its MUTE signal is wired to Vcc.   
      
      
   I found this happens because when the CD stops and the sled returns home, the   
   controller cuts power to it so fast that does not allow the driver to brake   
   the sled motor. I have jumped the power-on signal to always active and it   
   brakes properly. Design    
   defect?   
      
   But the initial disk reading problem remains, maybe they are not related. I   
   tried to readjust the focus bias pot and it was already right. I'm doing some   
   tests heating the board and that seems to have some effect but will require   
   more tests to narrow    
   down.   
      
   Service manual: https://elektrotanya.com/aiwa_nsx-500_xg-500_cx-   
   500.pdf/download.html   
      
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