From: pafoxp@x14all.kpn   
      
   On 29-10-2023 17:24, Jeroni Paul wrote:   
   > Jeroni Paul wrote:   
   >> Any idea what Q2 is for? Should I go ahead and try to disable it?   
   >   
   > Fixed!!! I disabled that transistor, restored FOCUS BIAS to original setting   
   and now works perfectly. Focuses first try and never loses it, went through   
   several disks in random mode, focuses and seeks quickly and reads all   
   perfectly including scratched    
   CD-R. I don't get what was that transistor supposed to do.   
   >   
   > I decided to do that because, while misadjusting FOCUS BIAS made it work   
   somewhat better, it still kept losing focus while jumping tracks and sometimes   
   would not focus back and give up. Also, other schematics using the same ICs   
   for example Aiwa NSX-800,   
    do not have anything altering F-BIAS, it is simply fixed by a pot.   
   Well done en thx for sharing this story.   
   --   
   grtz. Peter   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)