Bias Adjustment - Primare A32 Service Manual

Bias Adjustment

Critical for the adjustment are that the mainsvoltage is 230V or 120V exactly.
The temperature in the facility must be constant during the adjustment procedure.
Use the Bias test points and potentiometers (R1, R2) to adjust bias on each channel.
The lower potentiometer is accessible thru a hole in the bottom of the amplifier.
Bias test points
Compare the voltage
drop over all of the
emitter resistors.