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Sansui AU-999 bias, DC Offset and schematic

mroboto

Super Member
Here,the bias,DC Offset and schematic diagram of the Sansui AU-999

But it's a little tricky,

1.to get this schematic (i explain how to)

2.to adjust the bias,(i need a picture)

Donload the bias adjustement procedure (a real .pdf file) -> AU-999.pdf

Due to the max size of files attachement,i compress the file at the maximum possible with paq8px and i renamed it (.pdf)

1st,download on your desktop and rename the file -> schematic.paq8px.pdf into -> schematic.paq8px

2nd,download on your desktop and extract paq8px: http://encode.ru/attachment.php?attachmentid=1275&d=1272306083

3rd,drag and drop the file schematic.paq8px over -> paq8px_v69.exe

A folder (containing the file Sansui_AU_999_Schematic_Diagram.jpg) will be extracted on your desktop.

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I have used the method from EchoWars here http://www.audiokarma.org/forums/showpost.php?p=1605892&postcount=2

But i want to try the method specified by Sansui,

the method is explicated in an unusual way and i don't want to make any mistake,so please,give me a picture.

Just test on the fuse socket?

When looking under the chasis,the fuses sockets connections for F003 (Left channel) and F004 (Right channel) did not compared.

I burned a couple on mA tester fuses trying this,(before deoxitysing the pot)

I just don't want to repeat this episode.
 

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That's precisely why it's easier and safer to just measure the voltage across an emitter resistor as Glenn suggested in the thread you linked. Either procedure is six of one, a half dozen of the other.
 
Yes,but it could be easyer to test mA from the fuse socket without the need opening the botom of the unit (test under for mV / ajust on top)

the only thing i miss,is a picture from a botom view of the test point under the fuse soket and where the wire(s) leads.
 
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