Sansui QS-500 Service Manual or Schematic?

[Leestereo]

Getting ready to restore a QS-500 and have not been able to locate a copy of the service manual or schematic; can anyone help?

 

[petehall347]

best i can find is this pay for manual ..http://www.manuals-in-pdf.com/download-QS500-SANSUI-p-456215.html

 

[sKiZo]

Best I can find is this scan I just made of the important stuff in my factory original manual ... gave me an excuse to play around with a new scanner ... gonna assUme you know how it works, so you don't need the owner's manual section.

http://www.brainfartz.com/images/Stereo Stuff/quad/sansui qs500 manual bw.pdf

My karma for the week ... don't forget to pay it forward!!

 

[Leestereo]

Thanks sKiZo, much appreciated! Would it be possible for you to scan the schematic as well?

 

[sKiZo]

Sorry ... no schematic or block diagrams in the book ...

 

[Leestereo]

I guess its time to do some circuit tracing...not my favorite past time, but the scans of the board diagrams will help immensely, thanks again.

 

[billyz]

I used Brian fartz scan to set the bias on my newly acquired QS500. I did notice it took quite awhile to stabilize thermally . so dont be too quick to set it and leave it. I dont have an O scope so did not do the Other adjustment. And did not touch the Quad alignment either. But I can say it does sound very nice with the Klipsch Forte II's. I have not recapped it but may bypass the Capacitor output caps as I did find that improved my 5000X quite a bit.

 

[tom3]

See if I can post the schematic scans. Need to print out and tape together, too big to scan right. Four scans.

 

[Leestereo]

Tom3: Thanks for schematic scans, very much appreciated!

 

[sKiZo]

Nice! Been looking for one of those myself, so I went ahead and stole it.
For my penance, I seamed them together.

http://www.brainfartz.com/images/Stereo Stuff/quad/QS500-schematic.pdf

Some minor parallax distortion as you might expect from four separate scans, but I'm pretty sure I managed to fudge it together quite legibly. Easy to read at 250% anyway. 'Twere me, I'd print screen a target area you're working on for reference.

 

[ADKBob]

Thanks a bunch for the schematics. I picked up one of these and haven't had a chance to check it out. Which LPs will this decode?