How should I bias the D1 stage?

I am building a D1 stage but I dont know how I should biast it?
And any one have the service manual for it?
Attaching the schema..
I am going to use it with AD1862.

PL D1 OS.png
 
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Pin 12, AGND, is the analogue ground pin. For the DAC to work properly, the voltage at pin 11, IOUT, has to be close to the voltage at pin 12.

Pin 12 will normally be grounded and pin 11 connected to the input of the circuit you posted. You then indeed have to trim the circuit's input voltage to 0 V with respect to ground.
 
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